Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation

Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature o...
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Gespeichert in:

Autor*in:	Masaki Kubo [verfasserIn] Masato Higuchi [verfasserIn] Tomoyuki Koshimura [verfasserIn] Eita Shoji [verfasserIn] Takao Tsukada [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Polymerization Copolymer N-isopropylacrylamide 2-hydroxyethyl methacrylate Responsive temperature Lower critical solution temperature

Übergeordnetes Werk:	In: Ultrasonics Sonochemistry - Elsevier, 2021, 79(2021), Seite 105752-
Übergeordnetes Werk:	volume:79 ; year:2021 ; pages:105752-

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.ultsonch.2021.105752

Katalog-ID:	DOAJ075221322

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650		4	\|a N-isopropylacrylamide
650		4	\|a 2-hydroxyethyl methacrylate
650		4	\|a Responsive temperature
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653		0	\|a Chemistry
653		0	\|a Acoustics. Sound
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700	0		\|a Takao Tsukada \|e verfasserin \|4 aut
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allfields	10.1016/j.ultsonch.2021.105752 doi (DE-627)DOAJ075221322 (DE-599)DOAJ1572a62bd46e49ae8afdd8df1762d51d DE-627 ger DE-627 rakwb eng QD1-999 QC221-246 Masaki Kubo verfasserin aut Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature of poly(NIPAM-co-HEMA) using an ultrasonic polymerization technique. Initially, the behavior of the reaction was investigated using NIPAM and HEMA monomers under ultrasonic irradiation. A high ultrasonic power was found to produce a high reaction rate and low number average molecular weight of the copolymer. The polydispersity of the synthesized copolymer was approximately 1.5 for all ultrasonic powers examined. In the early stage of the reaction, the molar fraction of NIPAM in the copolymer was lower than the initial molar fraction of the monomers. It was concluded that ultrasonic irradiation affected the initiation reaction and polymer degradation, but did not affect the propagation reaction. Furthermore, the effect of the ultrasonic irradiation conditions on the temperature responsiveness of the copolymer was investigated. The lower critical solution temperature (LCST) of the copolymer was found to increase with increasing ultrasonic irradiation time. In addition, in the early stages of the reaction, the measured values of the LCST were higher than the estimated values using copolymer composition. This can be attributed to some parts of the copolymer chain possessing a higher NIPAM fraction than the overall fraction due to different reactivities of the monomers and terminated radicals. This hypothesis was indirectly verified by the synthesis of a block copolymer from the PNIPAM homopolymer and HEMA monomer. Polymerization Copolymer N-isopropylacrylamide 2-hydroxyethyl methacrylate Responsive temperature Lower critical solution temperature Chemistry Acoustics. Sound Masato Higuchi verfasserin aut Tomoyuki Koshimura verfasserin aut Eita Shoji verfasserin aut Takao Tsukada verfasserin aut In Ultrasonics Sonochemistry Elsevier, 2021 79(2021), Seite 105752- (DE-627)306713748 (DE-600)1501094-6 18732828 nnns volume:79 year:2021 pages:105752- https://doi.org/10.1016/j.ultsonch.2021.105752 kostenfrei https://doaj.org/article/1572a62bd46e49ae8afdd8df1762d51d kostenfrei http://www.sciencedirect.com/science/article/pii/S1350417721002947 kostenfrei https://doaj.org/toc/1350-4177 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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_4338 GBV_ILN_4367 GBV_ILN_4700 AR 79 2021 105752-
spelling	10.1016/j.ultsonch.2021.105752 doi (DE-627)DOAJ075221322 (DE-599)DOAJ1572a62bd46e49ae8afdd8df1762d51d DE-627 ger DE-627 rakwb eng QD1-999 QC221-246 Masaki Kubo verfasserin aut Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature of poly(NIPAM-co-HEMA) using an ultrasonic polymerization technique. Initially, the behavior of the reaction was investigated using NIPAM and HEMA monomers under ultrasonic irradiation. A high ultrasonic power was found to produce a high reaction rate and low number average molecular weight of the copolymer. The polydispersity of the synthesized copolymer was approximately 1.5 for all ultrasonic powers examined. In the early stage of the reaction, the molar fraction of NIPAM in the copolymer was lower than the initial molar fraction of the monomers. It was concluded that ultrasonic irradiation affected the initiation reaction and polymer degradation, but did not affect the propagation reaction. Furthermore, the effect of the ultrasonic irradiation conditions on the temperature responsiveness of the copolymer was investigated. The lower critical solution temperature (LCST) of the copolymer was found to increase with increasing ultrasonic irradiation time. In addition, in the early stages of the reaction, the measured values of the LCST were higher than the estimated values using copolymer composition. This can be attributed to some parts of the copolymer chain possessing a higher NIPAM fraction than the overall fraction due to different reactivities of the monomers and terminated radicals. This hypothesis was indirectly verified by the synthesis of a block copolymer from the PNIPAM homopolymer and HEMA monomer. Polymerization Copolymer N-isopropylacrylamide 2-hydroxyethyl methacrylate Responsive temperature Lower critical solution temperature Chemistry Acoustics. Sound Masato Higuchi verfasserin aut Tomoyuki Koshimura verfasserin aut Eita Shoji verfasserin aut Takao Tsukada verfasserin aut In Ultrasonics Sonochemistry Elsevier, 2021 79(2021), Seite 105752- (DE-627)306713748 (DE-600)1501094-6 18732828 nnns volume:79 year:2021 pages:105752- https://doi.org/10.1016/j.ultsonch.2021.105752 kostenfrei https://doaj.org/article/1572a62bd46e49ae8afdd8df1762d51d kostenfrei http://www.sciencedirect.com/science/article/pii/S1350417721002947 kostenfrei https://doaj.org/toc/1350-4177 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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_4338 GBV_ILN_4367 GBV_ILN_4700 AR 79 2021 105752-
allfields_unstemmed	10.1016/j.ultsonch.2021.105752 doi (DE-627)DOAJ075221322 (DE-599)DOAJ1572a62bd46e49ae8afdd8df1762d51d DE-627 ger DE-627 rakwb eng QD1-999 QC221-246 Masaki Kubo verfasserin aut Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature of poly(NIPAM-co-HEMA) using an ultrasonic polymerization technique. Initially, the behavior of the reaction was investigated using NIPAM and HEMA monomers under ultrasonic irradiation. A high ultrasonic power was found to produce a high reaction rate and low number average molecular weight of the copolymer. The polydispersity of the synthesized copolymer was approximately 1.5 for all ultrasonic powers examined. In the early stage of the reaction, the molar fraction of NIPAM in the copolymer was lower than the initial molar fraction of the monomers. It was concluded that ultrasonic irradiation affected the initiation reaction and polymer degradation, but did not affect the propagation reaction. Furthermore, the effect of the ultrasonic irradiation conditions on the temperature responsiveness of the copolymer was investigated. The lower critical solution temperature (LCST) of the copolymer was found to increase with increasing ultrasonic irradiation time. In addition, in the early stages of the reaction, the measured values of the LCST were higher than the estimated values using copolymer composition. This can be attributed to some parts of the copolymer chain possessing a higher NIPAM fraction than the overall fraction due to different reactivities of the monomers and terminated radicals. This hypothesis was indirectly verified by the synthesis of a block copolymer from the PNIPAM homopolymer and HEMA monomer. Polymerization Copolymer N-isopropylacrylamide 2-hydroxyethyl methacrylate Responsive temperature Lower critical solution temperature Chemistry Acoustics. Sound Masato Higuchi verfasserin aut Tomoyuki Koshimura verfasserin aut Eita Shoji verfasserin aut Takao Tsukada verfasserin aut In Ultrasonics Sonochemistry Elsevier, 2021 79(2021), Seite 105752- (DE-627)306713748 (DE-600)1501094-6 18732828 nnns volume:79 year:2021 pages:105752- https://doi.org/10.1016/j.ultsonch.2021.105752 kostenfrei https://doaj.org/article/1572a62bd46e49ae8afdd8df1762d51d kostenfrei http://www.sciencedirect.com/science/article/pii/S1350417721002947 kostenfrei https://doaj.org/toc/1350-4177 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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_4338 GBV_ILN_4367 GBV_ILN_4700 AR 79 2021 105752-
allfieldsGer	10.1016/j.ultsonch.2021.105752 doi (DE-627)DOAJ075221322 (DE-599)DOAJ1572a62bd46e49ae8afdd8df1762d51d DE-627 ger DE-627 rakwb eng QD1-999 QC221-246 Masaki Kubo verfasserin aut Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature of poly(NIPAM-co-HEMA) using an ultrasonic polymerization technique. Initially, the behavior of the reaction was investigated using NIPAM and HEMA monomers under ultrasonic irradiation. A high ultrasonic power was found to produce a high reaction rate and low number average molecular weight of the copolymer. The polydispersity of the synthesized copolymer was approximately 1.5 for all ultrasonic powers examined. In the early stage of the reaction, the molar fraction of NIPAM in the copolymer was lower than the initial molar fraction of the monomers. It was concluded that ultrasonic irradiation affected the initiation reaction and polymer degradation, but did not affect the propagation reaction. Furthermore, the effect of the ultrasonic irradiation conditions on the temperature responsiveness of the copolymer was investigated. The lower critical solution temperature (LCST) of the copolymer was found to increase with increasing ultrasonic irradiation time. In addition, in the early stages of the reaction, the measured values of the LCST were higher than the estimated values using copolymer composition. This can be attributed to some parts of the copolymer chain possessing a higher NIPAM fraction than the overall fraction due to different reactivities of the monomers and terminated radicals. This hypothesis was indirectly verified by the synthesis of a block copolymer from the PNIPAM homopolymer and HEMA monomer. Polymerization Copolymer N-isopropylacrylamide 2-hydroxyethyl methacrylate Responsive temperature Lower critical solution temperature Chemistry Acoustics. Sound Masato Higuchi verfasserin aut Tomoyuki Koshimura verfasserin aut Eita Shoji verfasserin aut Takao Tsukada verfasserin aut In Ultrasonics Sonochemistry Elsevier, 2021 79(2021), Seite 105752- (DE-627)306713748 (DE-600)1501094-6 18732828 nnns volume:79 year:2021 pages:105752- https://doi.org/10.1016/j.ultsonch.2021.105752 kostenfrei https://doaj.org/article/1572a62bd46e49ae8afdd8df1762d51d kostenfrei http://www.sciencedirect.com/science/article/pii/S1350417721002947 kostenfrei https://doaj.org/toc/1350-4177 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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_4338 GBV_ILN_4367 GBV_ILN_4700 AR 79 2021 105752-
allfieldsSound	10.1016/j.ultsonch.2021.105752 doi (DE-627)DOAJ075221322 (DE-599)DOAJ1572a62bd46e49ae8afdd8df1762d51d DE-627 ger DE-627 rakwb eng QD1-999 QC221-246 Masaki Kubo verfasserin aut Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature of poly(NIPAM-co-HEMA) using an ultrasonic polymerization technique. Initially, the behavior of the reaction was investigated using NIPAM and HEMA monomers under ultrasonic irradiation. A high ultrasonic power was found to produce a high reaction rate and low number average molecular weight of the copolymer. The polydispersity of the synthesized copolymer was approximately 1.5 for all ultrasonic powers examined. In the early stage of the reaction, the molar fraction of NIPAM in the copolymer was lower than the initial molar fraction of the monomers. It was concluded that ultrasonic irradiation affected the initiation reaction and polymer degradation, but did not affect the propagation reaction. Furthermore, the effect of the ultrasonic irradiation conditions on the temperature responsiveness of the copolymer was investigated. The lower critical solution temperature (LCST) of the copolymer was found to increase with increasing ultrasonic irradiation time. In addition, in the early stages of the reaction, the measured values of the LCST were higher than the estimated values using copolymer composition. This can be attributed to some parts of the copolymer chain possessing a higher NIPAM fraction than the overall fraction due to different reactivities of the monomers and terminated radicals. This hypothesis was indirectly verified by the synthesis of a block copolymer from the PNIPAM homopolymer and HEMA monomer. Polymerization Copolymer N-isopropylacrylamide 2-hydroxyethyl methacrylate Responsive temperature Lower critical solution temperature Chemistry Acoustics. Sound Masato Higuchi verfasserin aut Tomoyuki Koshimura verfasserin aut Eita Shoji verfasserin aut Takao Tsukada verfasserin aut In Ultrasonics Sonochemistry Elsevier, 2021 79(2021), Seite 105752- (DE-627)306713748 (DE-600)1501094-6 18732828 nnns volume:79 year:2021 pages:105752- https://doi.org/10.1016/j.ultsonch.2021.105752 kostenfrei https://doaj.org/article/1572a62bd46e49ae8afdd8df1762d51d kostenfrei http://www.sciencedirect.com/science/article/pii/S1350417721002947 kostenfrei https://doaj.org/toc/1350-4177 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 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_4338 GBV_ILN_4367 GBV_ILN_4700 AR 79 2021 105752-
language	English
source	In Ultrasonics Sonochemistry 79(2021), Seite 105752- volume:79 year:2021 pages:105752-
sourceStr	In Ultrasonics Sonochemistry 79(2021), Seite 105752- volume:79 year:2021 pages:105752-
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Polymerization Copolymer N-isopropylacrylamide 2-hydroxyethyl methacrylate Responsive temperature Lower critical solution temperature Chemistry Acoustics. Sound
isfreeaccess_bool	true
container_title	Ultrasonics Sonochemistry
authorswithroles_txt_mv	Masaki Kubo @@aut@@ Masato Higuchi @@aut@@ Tomoyuki Koshimura @@aut@@ Eita Shoji @@aut@@ Takao Tsukada @@aut@@
publishDateDaySort_date	2021-01-01T00:00:00Z
hierarchy_top_id	306713748
id	DOAJ075221322
language_de	englisch
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callnumber-first	Q - Science
author	Masaki Kubo
spellingShingle	Masaki Kubo misc QD1-999 misc QC221-246 misc Polymerization misc Copolymer misc N-isopropylacrylamide misc 2-hydroxyethyl methacrylate misc Responsive temperature misc Lower critical solution temperature misc Chemistry misc Acoustics. Sound Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation
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topic_title	QD1-999 QC221-246 Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation Polymerization Copolymer N-isopropylacrylamide 2-hydroxyethyl methacrylate Responsive temperature Lower critical solution temperature
topic	misc QD1-999 misc QC221-246 misc Polymerization misc Copolymer misc N-isopropylacrylamide misc 2-hydroxyethyl methacrylate misc Responsive temperature misc Lower critical solution temperature misc Chemistry misc Acoustics. Sound
topic_unstemmed	misc QD1-999 misc QC221-246 misc Polymerization misc Copolymer misc N-isopropylacrylamide misc 2-hydroxyethyl methacrylate misc Responsive temperature misc Lower critical solution temperature misc Chemistry misc Acoustics. Sound
topic_browse	misc QD1-999 misc QC221-246 misc Polymerization misc Copolymer misc N-isopropylacrylamide misc 2-hydroxyethyl methacrylate misc Responsive temperature misc Lower critical solution temperature misc Chemistry misc Acoustics. Sound
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title	Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation
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title_full	Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation
author_sort	Masaki Kubo
journal	Ultrasonics Sonochemistry
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author_browse	Masaki Kubo Masato Higuchi Tomoyuki Koshimura Eita Shoji Takao Tsukada
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class	QD1-999 QC221-246
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author-letter	Masaki Kubo
doi_str_mv	10.1016/j.ultsonch.2021.105752
author2-role	verfasserin
title_sort	control of the temperature responsiveness of poly(n-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation
callnumber	QD1-999
title_auth	Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation
abstract	Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature of poly(NIPAM-co-HEMA) using an ultrasonic polymerization technique. Initially, the behavior of the reaction was investigated using NIPAM and HEMA monomers under ultrasonic irradiation. A high ultrasonic power was found to produce a high reaction rate and low number average molecular weight of the copolymer. The polydispersity of the synthesized copolymer was approximately 1.5 for all ultrasonic powers examined. In the early stage of the reaction, the molar fraction of NIPAM in the copolymer was lower than the initial molar fraction of the monomers. It was concluded that ultrasonic irradiation affected the initiation reaction and polymer degradation, but did not affect the propagation reaction. Furthermore, the effect of the ultrasonic irradiation conditions on the temperature responsiveness of the copolymer was investigated. The lower critical solution temperature (LCST) of the copolymer was found to increase with increasing ultrasonic irradiation time. In addition, in the early stages of the reaction, the measured values of the LCST were higher than the estimated values using copolymer composition. This can be attributed to some parts of the copolymer chain possessing a higher NIPAM fraction than the overall fraction due to different reactivities of the monomers and terminated radicals. This hypothesis was indirectly verified by the synthesis of a block copolymer from the PNIPAM homopolymer and HEMA monomer.
abstractGer	Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature of poly(NIPAM-co-HEMA) using an ultrasonic polymerization technique. Initially, the behavior of the reaction was investigated using NIPAM and HEMA monomers under ultrasonic irradiation. A high ultrasonic power was found to produce a high reaction rate and low number average molecular weight of the copolymer. The polydispersity of the synthesized copolymer was approximately 1.5 for all ultrasonic powers examined. In the early stage of the reaction, the molar fraction of NIPAM in the copolymer was lower than the initial molar fraction of the monomers. It was concluded that ultrasonic irradiation affected the initiation reaction and polymer degradation, but did not affect the propagation reaction. Furthermore, the effect of the ultrasonic irradiation conditions on the temperature responsiveness of the copolymer was investigated. The lower critical solution temperature (LCST) of the copolymer was found to increase with increasing ultrasonic irradiation time. In addition, in the early stages of the reaction, the measured values of the LCST were higher than the estimated values using copolymer composition. This can be attributed to some parts of the copolymer chain possessing a higher NIPAM fraction than the overall fraction due to different reactivities of the monomers and terminated radicals. This hypothesis was indirectly verified by the synthesis of a block copolymer from the PNIPAM homopolymer and HEMA monomer.
abstract_unstemmed	Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) (poly(NIPAM-co-HEMA)) is a temperature-responsive copolymer that is expected to be applicable as an advanced functional polymeric material in various fields. In this study, a novel method was developed to control the responsive temperature of poly(NIPAM-co-HEMA) using an ultrasonic polymerization technique. Initially, the behavior of the reaction was investigated using NIPAM and HEMA monomers under ultrasonic irradiation. A high ultrasonic power was found to produce a high reaction rate and low number average molecular weight of the copolymer. The polydispersity of the synthesized copolymer was approximately 1.5 for all ultrasonic powers examined. In the early stage of the reaction, the molar fraction of NIPAM in the copolymer was lower than the initial molar fraction of the monomers. It was concluded that ultrasonic irradiation affected the initiation reaction and polymer degradation, but did not affect the propagation reaction. Furthermore, the effect of the ultrasonic irradiation conditions on the temperature responsiveness of the copolymer was investigated. The lower critical solution temperature (LCST) of the copolymer was found to increase with increasing ultrasonic irradiation time. In addition, in the early stages of the reaction, the measured values of the LCST were higher than the estimated values using copolymer composition. This can be attributed to some parts of the copolymer chain possessing a higher NIPAM fraction than the overall fraction due to different reactivities of the monomers and terminated radicals. This hypothesis was indirectly verified by the synthesis of a block copolymer from the PNIPAM homopolymer and HEMA monomer.
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title_short	Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation
url	https://doi.org/10.1016/j.ultsonch.2021.105752 https://doaj.org/article/1572a62bd46e49ae8afdd8df1762d51d http://www.sciencedirect.com/science/article/pii/S1350417721002947 https://doaj.org/toc/1350-4177
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Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation

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