Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering

A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<...
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Autor*in:	Satoshi Koizumi [verfasserIn] Yohei Noda [verfasserIn] Takumi Inada [verfasserIn] Tomoki Maeda [verfasserIn] Shiho Yada [verfasserIn] Tomokazu Yoshimura [verfasserIn] Hiroshi Shimosegawa [verfasserIn] Hiroya Fujita [verfasserIn] Munehiro Yamada [verfasserIn] Yukako Matsue [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	foam film thickness water content small-angle neutron scattering time-resolved observation

Übergeordnetes Werk:	In: Quantum Beam Science - MDPI AG, 2017, 7(2023), 1, p 4
Übergeordnetes Werk:	volume:7 ; year:2023 ; number:1, p 4

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/qubs7010004

Katalog-ID:	DOAJ087251876

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allfields	10.3390/qubs7010004 doi (DE-627)DOAJ087251876 (DE-599)DOAJd49e2ccdd13842a8af62683b4e56a5fa DE-627 ger DE-627 rakwb eng TK1-9971 Satoshi Koizumi verfasserin aut Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<i<β</i<–alanine (coded as C<sub<12</sub<–Me–<i<β</i<Ala). Amino-acid-type surfactants (C<sub<12</sub<–EtOH–<i<β</i<Ala and C<sub<12</sub<–Me–<i<β</i<Ala) are more healthy and environmentally friendly compared to sodium dodecyl sulfate (SDS). To investigate the microstructures of these new surfactants, we employed a method of time-of-flight small-angle neutron scattering (TOF SANS) at a pulsed neutron source, Tokai Japan (J–PARC). The advances in TOF SANS enable simultaneous multiscale observations without changing the detector positions, which is usually necessary for SANS at the reactor or small-angle X-ray scattering. We performed in situ and real-time observations of microstructures of collapsing shampoo foam covering over a wide range of length scales from 100 to 0.1 nm. After starting an air pump, we obtained time-resolved SANS from smaller wave number, small-angle scattering attributed to (1) a single bimolecular layer with a disk shape, (2) micelles in a bimolecular layer, and (3) incoherent scattering due to the hydrogen atoms of surfactants. The micelle in the foam film was the same size as the micelle found in the solution before foaming. The film thickness (~27 nm) was stable for a long time (<3600 s), and we simultaneously found a Newton black film of 6 nm thickness at a long time limit (~1000 s). The incoherent scattering obtained with different contrasts using protonated and deuterated water was crucial to determining the water content in the foam film, which was about 10~5 wt%. foam film thickness water content small-angle neutron scattering time-resolved observation Technology T Electrical engineering. Electronics. Nuclear engineering Yohei Noda verfasserin aut Takumi Inada verfasserin aut Tomoki Maeda verfasserin aut Shiho Yada verfasserin aut Tomokazu Yoshimura verfasserin aut Hiroshi Shimosegawa verfasserin aut Hiroya Fujita verfasserin aut Munehiro Yamada verfasserin aut Yukako Matsue verfasserin aut In Quantum Beam Science MDPI AG, 2017 7(2023), 1, p 4 (DE-627)1005471681 2412382X nnns volume:7 year:2023 number:1, p 4 https://doi.org/10.3390/qubs7010004 kostenfrei https://doaj.org/article/d49e2ccdd13842a8af62683b4e56a5fa kostenfrei https://www.mdpi.com/2412-382X/7/1/4 kostenfrei https://doaj.org/toc/2412-382X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 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 7 2023 1, p 4
spelling	10.3390/qubs7010004 doi (DE-627)DOAJ087251876 (DE-599)DOAJd49e2ccdd13842a8af62683b4e56a5fa DE-627 ger DE-627 rakwb eng TK1-9971 Satoshi Koizumi verfasserin aut Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<i<β</i<–alanine (coded as C<sub<12</sub<–Me–<i<β</i<Ala). Amino-acid-type surfactants (C<sub<12</sub<–EtOH–<i<β</i<Ala and C<sub<12</sub<–Me–<i<β</i<Ala) are more healthy and environmentally friendly compared to sodium dodecyl sulfate (SDS). To investigate the microstructures of these new surfactants, we employed a method of time-of-flight small-angle neutron scattering (TOF SANS) at a pulsed neutron source, Tokai Japan (J–PARC). The advances in TOF SANS enable simultaneous multiscale observations without changing the detector positions, which is usually necessary for SANS at the reactor or small-angle X-ray scattering. We performed in situ and real-time observations of microstructures of collapsing shampoo foam covering over a wide range of length scales from 100 to 0.1 nm. After starting an air pump, we obtained time-resolved SANS from smaller wave number, small-angle scattering attributed to (1) a single bimolecular layer with a disk shape, (2) micelles in a bimolecular layer, and (3) incoherent scattering due to the hydrogen atoms of surfactants. The micelle in the foam film was the same size as the micelle found in the solution before foaming. The film thickness (~27 nm) was stable for a long time (<3600 s), and we simultaneously found a Newton black film of 6 nm thickness at a long time limit (~1000 s). The incoherent scattering obtained with different contrasts using protonated and deuterated water was crucial to determining the water content in the foam film, which was about 10~5 wt%. foam film thickness water content small-angle neutron scattering time-resolved observation Technology T Electrical engineering. Electronics. Nuclear engineering Yohei Noda verfasserin aut Takumi Inada verfasserin aut Tomoki Maeda verfasserin aut Shiho Yada verfasserin aut Tomokazu Yoshimura verfasserin aut Hiroshi Shimosegawa verfasserin aut Hiroya Fujita verfasserin aut Munehiro Yamada verfasserin aut Yukako Matsue verfasserin aut In Quantum Beam Science MDPI AG, 2017 7(2023), 1, p 4 (DE-627)1005471681 2412382X nnns volume:7 year:2023 number:1, p 4 https://doi.org/10.3390/qubs7010004 kostenfrei https://doaj.org/article/d49e2ccdd13842a8af62683b4e56a5fa kostenfrei https://www.mdpi.com/2412-382X/7/1/4 kostenfrei https://doaj.org/toc/2412-382X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 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 7 2023 1, p 4
allfields_unstemmed	10.3390/qubs7010004 doi (DE-627)DOAJ087251876 (DE-599)DOAJd49e2ccdd13842a8af62683b4e56a5fa DE-627 ger DE-627 rakwb eng TK1-9971 Satoshi Koizumi verfasserin aut Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<i<β</i<–alanine (coded as C<sub<12</sub<–Me–<i<β</i<Ala). Amino-acid-type surfactants (C<sub<12</sub<–EtOH–<i<β</i<Ala and C<sub<12</sub<–Me–<i<β</i<Ala) are more healthy and environmentally friendly compared to sodium dodecyl sulfate (SDS). To investigate the microstructures of these new surfactants, we employed a method of time-of-flight small-angle neutron scattering (TOF SANS) at a pulsed neutron source, Tokai Japan (J–PARC). The advances in TOF SANS enable simultaneous multiscale observations without changing the detector positions, which is usually necessary for SANS at the reactor or small-angle X-ray scattering. We performed in situ and real-time observations of microstructures of collapsing shampoo foam covering over a wide range of length scales from 100 to 0.1 nm. After starting an air pump, we obtained time-resolved SANS from smaller wave number, small-angle scattering attributed to (1) a single bimolecular layer with a disk shape, (2) micelles in a bimolecular layer, and (3) incoherent scattering due to the hydrogen atoms of surfactants. The micelle in the foam film was the same size as the micelle found in the solution before foaming. The film thickness (~27 nm) was stable for a long time (<3600 s), and we simultaneously found a Newton black film of 6 nm thickness at a long time limit (~1000 s). The incoherent scattering obtained with different contrasts using protonated and deuterated water was crucial to determining the water content in the foam film, which was about 10~5 wt%. foam film thickness water content small-angle neutron scattering time-resolved observation Technology T Electrical engineering. Electronics. Nuclear engineering Yohei Noda verfasserin aut Takumi Inada verfasserin aut Tomoki Maeda verfasserin aut Shiho Yada verfasserin aut Tomokazu Yoshimura verfasserin aut Hiroshi Shimosegawa verfasserin aut Hiroya Fujita verfasserin aut Munehiro Yamada verfasserin aut Yukako Matsue verfasserin aut In Quantum Beam Science MDPI AG, 2017 7(2023), 1, p 4 (DE-627)1005471681 2412382X nnns volume:7 year:2023 number:1, p 4 https://doi.org/10.3390/qubs7010004 kostenfrei https://doaj.org/article/d49e2ccdd13842a8af62683b4e56a5fa kostenfrei https://www.mdpi.com/2412-382X/7/1/4 kostenfrei https://doaj.org/toc/2412-382X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 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 7 2023 1, p 4
allfieldsGer	10.3390/qubs7010004 doi (DE-627)DOAJ087251876 (DE-599)DOAJd49e2ccdd13842a8af62683b4e56a5fa DE-627 ger DE-627 rakwb eng TK1-9971 Satoshi Koizumi verfasserin aut Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<i<β</i<–alanine (coded as C<sub<12</sub<–Me–<i<β</i<Ala). Amino-acid-type surfactants (C<sub<12</sub<–EtOH–<i<β</i<Ala and C<sub<12</sub<–Me–<i<β</i<Ala) are more healthy and environmentally friendly compared to sodium dodecyl sulfate (SDS). To investigate the microstructures of these new surfactants, we employed a method of time-of-flight small-angle neutron scattering (TOF SANS) at a pulsed neutron source, Tokai Japan (J–PARC). The advances in TOF SANS enable simultaneous multiscale observations without changing the detector positions, which is usually necessary for SANS at the reactor or small-angle X-ray scattering. We performed in situ and real-time observations of microstructures of collapsing shampoo foam covering over a wide range of length scales from 100 to 0.1 nm. After starting an air pump, we obtained time-resolved SANS from smaller wave number, small-angle scattering attributed to (1) a single bimolecular layer with a disk shape, (2) micelles in a bimolecular layer, and (3) incoherent scattering due to the hydrogen atoms of surfactants. The micelle in the foam film was the same size as the micelle found in the solution before foaming. The film thickness (~27 nm) was stable for a long time (<3600 s), and we simultaneously found a Newton black film of 6 nm thickness at a long time limit (~1000 s). The incoherent scattering obtained with different contrasts using protonated and deuterated water was crucial to determining the water content in the foam film, which was about 10~5 wt%. foam film thickness water content small-angle neutron scattering time-resolved observation Technology T Electrical engineering. Electronics. Nuclear engineering Yohei Noda verfasserin aut Takumi Inada verfasserin aut Tomoki Maeda verfasserin aut Shiho Yada verfasserin aut Tomokazu Yoshimura verfasserin aut Hiroshi Shimosegawa verfasserin aut Hiroya Fujita verfasserin aut Munehiro Yamada verfasserin aut Yukako Matsue verfasserin aut In Quantum Beam Science MDPI AG, 2017 7(2023), 1, p 4 (DE-627)1005471681 2412382X nnns volume:7 year:2023 number:1, p 4 https://doi.org/10.3390/qubs7010004 kostenfrei https://doaj.org/article/d49e2ccdd13842a8af62683b4e56a5fa kostenfrei https://www.mdpi.com/2412-382X/7/1/4 kostenfrei https://doaj.org/toc/2412-382X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 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 7 2023 1, p 4
allfieldsSound	10.3390/qubs7010004 doi (DE-627)DOAJ087251876 (DE-599)DOAJd49e2ccdd13842a8af62683b4e56a5fa DE-627 ger DE-627 rakwb eng TK1-9971 Satoshi Koizumi verfasserin aut Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<i<β</i<–alanine (coded as C<sub<12</sub<–Me–<i<β</i<Ala). Amino-acid-type surfactants (C<sub<12</sub<–EtOH–<i<β</i<Ala and C<sub<12</sub<–Me–<i<β</i<Ala) are more healthy and environmentally friendly compared to sodium dodecyl sulfate (SDS). To investigate the microstructures of these new surfactants, we employed a method of time-of-flight small-angle neutron scattering (TOF SANS) at a pulsed neutron source, Tokai Japan (J–PARC). The advances in TOF SANS enable simultaneous multiscale observations without changing the detector positions, which is usually necessary for SANS at the reactor or small-angle X-ray scattering. We performed in situ and real-time observations of microstructures of collapsing shampoo foam covering over a wide range of length scales from 100 to 0.1 nm. After starting an air pump, we obtained time-resolved SANS from smaller wave number, small-angle scattering attributed to (1) a single bimolecular layer with a disk shape, (2) micelles in a bimolecular layer, and (3) incoherent scattering due to the hydrogen atoms of surfactants. The micelle in the foam film was the same size as the micelle found in the solution before foaming. The film thickness (~27 nm) was stable for a long time (<3600 s), and we simultaneously found a Newton black film of 6 nm thickness at a long time limit (~1000 s). The incoherent scattering obtained with different contrasts using protonated and deuterated water was crucial to determining the water content in the foam film, which was about 10~5 wt%. foam film thickness water content small-angle neutron scattering time-resolved observation Technology T Electrical engineering. Electronics. Nuclear engineering Yohei Noda verfasserin aut Takumi Inada verfasserin aut Tomoki Maeda verfasserin aut Shiho Yada verfasserin aut Tomokazu Yoshimura verfasserin aut Hiroshi Shimosegawa verfasserin aut Hiroya Fujita verfasserin aut Munehiro Yamada verfasserin aut Yukako Matsue verfasserin aut In Quantum Beam Science MDPI AG, 2017 7(2023), 1, p 4 (DE-627)1005471681 2412382X nnns volume:7 year:2023 number:1, p 4 https://doi.org/10.3390/qubs7010004 kostenfrei https://doaj.org/article/d49e2ccdd13842a8af62683b4e56a5fa kostenfrei https://www.mdpi.com/2412-382X/7/1/4 kostenfrei https://doaj.org/toc/2412-382X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 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 7 2023 1, p 4
language	English
source	In Quantum Beam Science 7(2023), 1, p 4 volume:7 year:2023 number:1, p 4
sourceStr	In Quantum Beam Science 7(2023), 1, p 4 volume:7 year:2023 number:1, p 4
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	foam film thickness water content small-angle neutron scattering time-resolved observation Technology T Electrical engineering. Electronics. Nuclear engineering
isfreeaccess_bool	true
container_title	Quantum Beam Science
authorswithroles_txt_mv	Satoshi Koizumi @@aut@@ Yohei Noda @@aut@@ Takumi Inada @@aut@@ Tomoki Maeda @@aut@@ Shiho Yada @@aut@@ Tomokazu Yoshimura @@aut@@ Hiroshi Shimosegawa @@aut@@ Hiroya Fujita @@aut@@ Munehiro Yamada @@aut@@ Yukako Matsue @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	1005471681
id	DOAJ087251876
language_de	englisch
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callnumber-first	T - Technology
author	Satoshi Koizumi
spellingShingle	Satoshi Koizumi misc TK1-9971 misc foam misc film thickness misc water content misc small-angle neutron scattering misc time-resolved observation misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering
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topic_title	TK1-9971 Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering foam film thickness water content small-angle neutron scattering time-resolved observation
topic	misc TK1-9971 misc foam misc film thickness misc water content misc small-angle neutron scattering misc time-resolved observation misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering
topic_unstemmed	misc TK1-9971 misc foam misc film thickness misc water content misc small-angle neutron scattering misc time-resolved observation misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering
topic_browse	misc TK1-9971 misc foam misc film thickness misc water content misc small-angle neutron scattering misc time-resolved observation misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering
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title	Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering
ctrlnum	(DE-627)DOAJ087251876 (DE-599)DOAJd49e2ccdd13842a8af62683b4e56a5fa
title_full	Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering
author_sort	Satoshi Koizumi
journal	Quantum Beam Science
journalStr	Quantum Beam Science
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author_browse	Satoshi Koizumi Yohei Noda Takumi Inada Tomoki Maeda Shiho Yada Tomokazu Yoshimura Hiroshi Shimosegawa Hiroya Fujita Munehiro Yamada Yukako Matsue
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author-letter	Satoshi Koizumi
doi_str_mv	10.3390/qubs7010004
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title_sort	microscopic depictions of vanishing shampoo foam examined by time-of-flight small-angle neutron scattering
callnumber	TK1-9971
title_auth	Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering
abstract	A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<i<β</i<–alanine (coded as C<sub<12</sub<–Me–<i<β</i<Ala). Amino-acid-type surfactants (C<sub<12</sub<–EtOH–<i<β</i<Ala and C<sub<12</sub<–Me–<i<β</i<Ala) are more healthy and environmentally friendly compared to sodium dodecyl sulfate (SDS). To investigate the microstructures of these new surfactants, we employed a method of time-of-flight small-angle neutron scattering (TOF SANS) at a pulsed neutron source, Tokai Japan (J–PARC). The advances in TOF SANS enable simultaneous multiscale observations without changing the detector positions, which is usually necessary for SANS at the reactor or small-angle X-ray scattering. We performed in situ and real-time observations of microstructures of collapsing shampoo foam covering over a wide range of length scales from 100 to 0.1 nm. After starting an air pump, we obtained time-resolved SANS from smaller wave number, small-angle scattering attributed to (1) a single bimolecular layer with a disk shape, (2) micelles in a bimolecular layer, and (3) incoherent scattering due to the hydrogen atoms of surfactants. The micelle in the foam film was the same size as the micelle found in the solution before foaming. The film thickness (~27 nm) was stable for a long time (<3600 s), and we simultaneously found a Newton black film of 6 nm thickness at a long time limit (~1000 s). The incoherent scattering obtained with different contrasts using protonated and deuterated water was crucial to determining the water content in the foam film, which was about 10~5 wt%.
abstractGer	A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<i<β</i<–alanine (coded as C<sub<12</sub<–Me–<i<β</i<Ala). Amino-acid-type surfactants (C<sub<12</sub<–EtOH–<i<β</i<Ala and C<sub<12</sub<–Me–<i<β</i<Ala) are more healthy and environmentally friendly compared to sodium dodecyl sulfate (SDS). To investigate the microstructures of these new surfactants, we employed a method of time-of-flight small-angle neutron scattering (TOF SANS) at a pulsed neutron source, Tokai Japan (J–PARC). The advances in TOF SANS enable simultaneous multiscale observations without changing the detector positions, which is usually necessary for SANS at the reactor or small-angle X-ray scattering. We performed in situ and real-time observations of microstructures of collapsing shampoo foam covering over a wide range of length scales from 100 to 0.1 nm. After starting an air pump, we obtained time-resolved SANS from smaller wave number, small-angle scattering attributed to (1) a single bimolecular layer with a disk shape, (2) micelles in a bimolecular layer, and (3) incoherent scattering due to the hydrogen atoms of surfactants. The micelle in the foam film was the same size as the micelle found in the solution before foaming. The film thickness (~27 nm) was stable for a long time (<3600 s), and we simultaneously found a Newton black film of 6 nm thickness at a long time limit (~1000 s). The incoherent scattering obtained with different contrasts using protonated and deuterated water was crucial to determining the water content in the foam film, which was about 10~5 wt%.
abstract_unstemmed	A novel surfactant of <i<N</i<–dodecanoyl–<i<N</i<–(2-hydroxyethyl)–<i<β</i<–alanine (coded as C<sub<12</sub<–EtOH–<i<β</i<Ala) was synthesized by modifying the methyl group of <i<N</i<–dodecanoyl–<i<N</i<–methyl–<i<β</i<–alanine (coded as C<sub<12</sub<–Me–<i<β</i<Ala). Amino-acid-type surfactants (C<sub<12</sub<–EtOH–<i<β</i<Ala and C<sub<12</sub<–Me–<i<β</i<Ala) are more healthy and environmentally friendly compared to sodium dodecyl sulfate (SDS). To investigate the microstructures of these new surfactants, we employed a method of time-of-flight small-angle neutron scattering (TOF SANS) at a pulsed neutron source, Tokai Japan (J–PARC). The advances in TOF SANS enable simultaneous multiscale observations without changing the detector positions, which is usually necessary for SANS at the reactor or small-angle X-ray scattering. We performed in situ and real-time observations of microstructures of collapsing shampoo foam covering over a wide range of length scales from 100 to 0.1 nm. After starting an air pump, we obtained time-resolved SANS from smaller wave number, small-angle scattering attributed to (1) a single bimolecular layer with a disk shape, (2) micelles in a bimolecular layer, and (3) incoherent scattering due to the hydrogen atoms of surfactants. The micelle in the foam film was the same size as the micelle found in the solution before foaming. The film thickness (~27 nm) was stable for a long time (<3600 s), and we simultaneously found a Newton black film of 6 nm thickness at a long time limit (~1000 s). The incoherent scattering obtained with different contrasts using protonated and deuterated water was crucial to determining the water content in the foam film, which was about 10~5 wt%.
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title_short	Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering
url	https://doi.org/10.3390/qubs7010004 https://doaj.org/article/d49e2ccdd13842a8af62683b4e56a5fa https://www.mdpi.com/2412-382X/7/1/4 https://doaj.org/toc/2412-382X
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Microscopic Depictions of Vanishing Shampoo Foam Examined by Time-of-Flight Small-Angle Neutron Scattering

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