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Discontinuous Crossover between Fast and Slow Kinetics at the Volume Phase Transition in Poly-N-isopropylacrylamide Gels.
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- Okajima Takaharu
- Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, <BR> Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
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- Hirotsu Shunsuke
- Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, <BR> Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
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- Nishio Kazufumi
- Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, <BR> Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
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- Harada Ichiro
- Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, <BR> Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
Bibliographic Information
- Published
- 2000
- DOI
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- 10.1143/jjap.39.l875
- Publisher
- The Japan Society of Applied Physics
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Description
The kinetics of the volume phase transition in N-isopropylacrylamide gels has been studied as a function of crosslinker concentration. The shrinking kinetics at the transition is extremely slow in gels with a standard composition which have been used widely in various experiments. A discontinuous crossover from slow to much faster kinetics were observed in both high- and low-crosslinker-concentration regions, where the characteristic time of the shrinking process changes abruptly by two to four orders of magnitude with a minute change of the crosslinker concentration. In spite of these marked changes in the kinetics, no anomaly was observed in the degree of equilibrium swelling in these regions. A mechanism leading to sudden changes in kinetics is discussed in terms of an inhomogeneous network structure which is dependent on crosslink density.
Journal
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 39 (8B), L875-L877, 2000
The Japan Society of Applied Physics
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Keywords
Details 詳細情報について
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- CRID
- 1390001206251067392
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- NII Article ID
- 210000048641
- 110004093429
- 130004527726
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- NII Book ID
- AA10650595
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- ISSN
- 13474065
- 00214922
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- NDL BIB ID
- 5500954
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed
