Fast shrinking kinetics of poly(N-isopropylacrylamide) hydrogels containing a nonionic surfactant

Shrinking kinetics of poly(N-isopropylacrylamide) gels prepared in the presence of a nonionic surfactant C9PE10 was investigated. The shrinking rate of the gels containing more than 6 wt.% of C9PE10 showed about a thousand-fold increase. From the analysis of the shrinking process and the small-angle...

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Veröffentlicht in:	Colloid and polymer science 2009-10, Vol.287 (10), p.1123-1129
Hauptverfasser:	Takeshita, Hiroki, Sano, Midori, Wada, Kotaro, Tamura, Keita, Miya, Masamitsu, Takenaka, Katsuhiko, Shiomi, Tomoo
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Characterization and Evaluation of Materials Chemistry Chemistry and Materials Science Colloids Complex Fluids and Microfluidics Exact sciences and technology Food Science Gels Heterogeneity Hydrogels Nanotechnology and Microengineering Networks Nonionic Organic polymers Original Contribution Physical Chemistry Physicochemistry of polymers Polymer Sciences Properties and characterization Small angle X ray scattering Soft and Granular Matter Solution and gel properties Surfactants
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Zusammenfassung:	Shrinking kinetics of poly(N-isopropylacrylamide) gels prepared in the presence of a nonionic surfactant C9PE10 was investigated. The shrinking rate of the gels containing more than 6 wt.% of C9PE10 showed about a thousand-fold increase. From the analysis of the shrinking process and the small-angle X-ray scattering profiles, the fast shrinking kinetics was attributed to the incorporation of spatial heterogeneity of the network structure, which is caused by the addition of the surfactant.
ISSN:	0303-402X 1435-1536
DOI:	10.1007/s00396-009-2069-1