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

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Abstract

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.

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Acknowledgements

This work was partially supported by the Ogasawara Foundation for the Promotion of Science & Engineering. The SAXS experiments using synchrotron radiation were performed under the approval of the Photon Factory Program Advisory Committee (Proposal 2006G086 and 2008G071).

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Authors and Affiliations

  1. Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata, 940-2188, Japan

    Hiroki Takeshita, Midori Sano, Kotaro Wada, Keita Tamura, Masamitsu Miya, Katsuhiko Takenaka & Tomoo Shiomi

  2. Center for Green-Tech Development in Asia, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata, 940-2188, Japan

    Katsuhiko Takenaka & Tomoo Shiomi

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  1. Hiroki Takeshita
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  2. Midori Sano
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  3. Kotaro Wada
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  4. Keita Tamura
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  5. Masamitsu Miya
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  6. Katsuhiko Takenaka
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  7. Tomoo Shiomi
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Correspondence to Hiroki Takeshita.

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Takeshita, H., Sano, M., Wada, K. et al. Fast shrinking kinetics of poly(N-isopropylacrylamide) hydrogels containing a nonionic surfactant. Colloid Polym Sci 287, 1123–1129 (2009). https://doi.org/10.1007/s00396-009-2069-1

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  • DOI: https://doi.org/10.1007/s00396-009-2069-1

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