Positron annihilation lifetime study of
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Kenji Ito; Yusuke Ujihira; Takashi Yamashita; Kazuyuki Horie
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Article
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1998
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John Wiley and Sons
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English
β 254 KB
π 2 views
The macroscopic volume shrinkage and swelling of poly (N-isopropylacrylamide) (PNIPA) gel induced by the compositional change in the methanol-water mixed solvent is correlated to the change in the nanoscopic free volume size and numerical concentration formed in the PNIPA gels. The free volume size