Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties

Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film). Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Sven Sängerlaub [verfasserIn] Esra Kucukpinar [verfasserIn] Kajetan Müller [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2019

Schlagwörter:	active packaging moisture control water vapor absorption effective diffusion coefficient, mixed matrix membranes

Übergeordnetes Werk:	In: Materials - MDPI AG, 2009, 12(2019), 14, p 2304
Übergeordnetes Werk:	volume:12 ; year:2019 ; number:14, p 2304

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/ma12142304

Katalog-ID:	DOAJ040592278

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520			\|a Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film).
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allfields	10.3390/ma12142304 doi (DE-627)DOAJ040592278 (DE-599)DOAJ02d16a95ccde4b9da1af3390f004d9b1 DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Sven Sängerlaub verfasserin aut Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film). active packaging moisture control water vapor absorption effective diffusion coefficient, mixed matrix membranes Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Esra Kucukpinar verfasserin aut Kajetan Müller verfasserin aut In Materials MDPI AG, 2009 12(2019), 14, p 2304 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2019 number:14, p 2304 https://doi.org/10.3390/ma12142304 kostenfrei https://doaj.org/article/02d16a95ccde4b9da1af3390f004d9b1 kostenfrei https://www.mdpi.com/1996-1944/12/14/2304 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 14, p 2304
spelling	10.3390/ma12142304 doi (DE-627)DOAJ040592278 (DE-599)DOAJ02d16a95ccde4b9da1af3390f004d9b1 DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Sven Sängerlaub verfasserin aut Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film). active packaging moisture control water vapor absorption effective diffusion coefficient, mixed matrix membranes Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Esra Kucukpinar verfasserin aut Kajetan Müller verfasserin aut In Materials MDPI AG, 2009 12(2019), 14, p 2304 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2019 number:14, p 2304 https://doi.org/10.3390/ma12142304 kostenfrei https://doaj.org/article/02d16a95ccde4b9da1af3390f004d9b1 kostenfrei https://www.mdpi.com/1996-1944/12/14/2304 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 14, p 2304
allfields_unstemmed	10.3390/ma12142304 doi (DE-627)DOAJ040592278 (DE-599)DOAJ02d16a95ccde4b9da1af3390f004d9b1 DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Sven Sängerlaub verfasserin aut Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film). active packaging moisture control water vapor absorption effective diffusion coefficient, mixed matrix membranes Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Esra Kucukpinar verfasserin aut Kajetan Müller verfasserin aut In Materials MDPI AG, 2009 12(2019), 14, p 2304 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2019 number:14, p 2304 https://doi.org/10.3390/ma12142304 kostenfrei https://doaj.org/article/02d16a95ccde4b9da1af3390f004d9b1 kostenfrei https://www.mdpi.com/1996-1944/12/14/2304 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 14, p 2304
allfieldsGer	10.3390/ma12142304 doi (DE-627)DOAJ040592278 (DE-599)DOAJ02d16a95ccde4b9da1af3390f004d9b1 DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Sven Sängerlaub verfasserin aut Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film). active packaging moisture control water vapor absorption effective diffusion coefficient, mixed matrix membranes Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Esra Kucukpinar verfasserin aut Kajetan Müller verfasserin aut In Materials MDPI AG, 2009 12(2019), 14, p 2304 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2019 number:14, p 2304 https://doi.org/10.3390/ma12142304 kostenfrei https://doaj.org/article/02d16a95ccde4b9da1af3390f004d9b1 kostenfrei https://www.mdpi.com/1996-1944/12/14/2304 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 14, p 2304
allfieldsSound	10.3390/ma12142304 doi (DE-627)DOAJ040592278 (DE-599)DOAJ02d16a95ccde4b9da1af3390f004d9b1 DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Sven Sängerlaub verfasserin aut Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film). active packaging moisture control water vapor absorption effective diffusion coefficient, mixed matrix membranes Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Esra Kucukpinar verfasserin aut Kajetan Müller verfasserin aut In Materials MDPI AG, 2009 12(2019), 14, p 2304 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2019 number:14, p 2304 https://doi.org/10.3390/ma12142304 kostenfrei https://doaj.org/article/02d16a95ccde4b9da1af3390f004d9b1 kostenfrei https://www.mdpi.com/1996-1944/12/14/2304 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 14, p 2304
language	English
source	In Materials 12(2019), 14, p 2304 volume:12 year:2019 number:14, p 2304
sourceStr	In Materials 12(2019), 14, p 2304 volume:12 year:2019 number:14, p 2304
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	active packaging moisture control water vapor absorption effective diffusion coefficient, mixed matrix membranes Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics
isfreeaccess_bool	true
container_title	Materials
authorswithroles_txt_mv	Sven Sängerlaub @@aut@@ Esra Kucukpinar @@aut@@ Kajetan Müller @@aut@@
publishDateDaySort_date	2019-01-01T00:00:00Z
hierarchy_top_id	595712649
id	DOAJ040592278
language_de	englisch
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Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). 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callnumber-first	T - Technology
author	Sven Sängerlaub
spellingShingle	Sven Sängerlaub misc TK1-9971 misc TA1-2040 misc QH201-278.5 misc QC120-168.85 misc active packaging misc moisture control misc water vapor absorption misc effective diffusion coefficient, mixed matrix membranes misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering misc Engineering (General). Civil engineering (General) misc Microscopy misc Descriptive and experimental mechanics Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties
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topic_title	TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties active packaging moisture control water vapor absorption effective diffusion coefficient, mixed matrix membranes
topic	misc TK1-9971 misc TA1-2040 misc QH201-278.5 misc QC120-168.85 misc active packaging misc moisture control misc water vapor absorption misc effective diffusion coefficient, mixed matrix membranes misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering misc Engineering (General). Civil engineering (General) misc Microscopy misc Descriptive and experimental mechanics
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title	Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties
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title_full	Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties
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author_browse	Sven Sängerlaub Esra Kucukpinar Kajetan Müller
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title_sort	desiccant films made of low-density polyethylene with dispersed silica gel—water vapor absorption, permeability (h<sub<2</sub<o, n<sub<2</sub<, o<sub<2</sub<, co<sub<2</sub<), and mechanical properties
callnumber	TK1-9971
title_auth	Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties
abstract	Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film).
abstractGer	Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film).
abstract_unstemmed	Silica gel is a well-known desiccant. Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film).
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container_issue	14, p 2304
title_short	Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties
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Through dispersion of silica gel in a polymer, films can be made that absorb and desorb water vapor. The water vapor absorption becomes reversible by exposing such films to a water vapor pressure below that of the water vapor pressure during absorption, or by heating the film. The intention of this study was to achieve a better understanding about the water vapor absorption, permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and mechanical properties of films with dispersed silica gel. Low-density polyethylene (PE-LD) monolayer films with a nominal silica gel concentration of 0.2, 0.4, and 0.6 g dispersed silica gel per 1 g film (PE-LD) were prepared and they absorbed up to 0.08 g water vapor per 1 g of film. The water vapor absorption as a function of time was described by using effective diffusion coefficients. The steady state (effective) water vapor permeation coefficients of the films with dispersed silica gel were a factor of 2 to 14 (8.4 to 60.2·10<sup<−12</sup< mg·cm·(cm<sup<2</sup<·s·Pa)<sup<−1</sup<, 23 °C) higher than for pure PE-LD films (4.3·10<sup<−12</sup< mg·cm·(cm²·s·Pa)<sup<−1</sup<, 23 °C). On the other hand, the steady state gas permeabilities for N<sub<2</sub<, O<sub<2</sub<, and CO<sub<2</sub< were reduced to around one-third of the pure PE-LD films. An important result is that (effective) water vapor permeation coefficients calculated from results of sorption and measured by permeation experiments yielded similar values. It has been found that it is possible to describe the sorption and diffusion behavior of water by knowing the permeability coefficient and the sorption capacity of the film (<inline-formula< <math display="inline"< <semantics< <mrow< <msub< <mi mathvariant="normal"<P</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<≈</mo< <msub< <mi mathvariant="normal"<S</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< <mo<·</mo< <msub< <mi mathvariant="normal"<D</mi< <mrow< <mi<eff</mi< <mo<.</mo< </mrow< </msub< </mrow< </semantics< </math< </inline-formula<). The tensile stress changed only slightly (values between 10 and 14 N mm<sup<−2</sup<), while the tensile strain at break was reduced with higher nominal silica gel concentration from 318 length-% (pure PE-LD film) to 5 length-% (PE-LD with 0.6 g dispersed silica gel per 1 g film).</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">active packaging</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">moisture control</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">water vapor absorption</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">effective diffusion coefficient, mixed matrix membranes</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Technology</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">T</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Electrical engineering. 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Desiccant Films Made of Low-Density Polyethylene with Dispersed Silica Gel—Water Vapor Absorption, Permeability (H<sub<2</sub<O, N<sub<2</sub<, O<sub<2</sub<, CO<sub<2</sub<), and Mechanical Properties

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