Swelling equilibria of poly(N-isopropylacrylamide) gel in aqueous polymer solutions

T. Ishidao, M. Akagi, H. Sugimoto, Y. Onoue, Y. Iwai, Y. Arai

研究成果: Contribution to journalArticle査読

28 被引用数 (Scopus)

抄録

Swelling equilibria of poly(N-isopropylacrylamide) (NIPA) gel in poly (ethylene glycol) (PEG)-water mixtures and the concentrations of PEG inside and outside the NIPA gel at 298.2K are discussed. NIPA gel exhibited continuous deswelling behavior for PEG6000, 20000, and 50000, a volume phase transition for PEG 1000, and reentrant behavior for PEG200. From the partition of PEG, it was found that the PEG molecules could not penetrate into the gel network in shrunk state. The gel absorbed low molecular weight PEGs but excluded high molecular weight PEGs in swollen state. A thermodynamic model, based on the Flory-Huggins theory coupled with the osmotic pressure by rubber elasticity proposed by Flory, was applied to correlate the swelling behavior of the gel in PEG-water mixtures.

本文言語英語
ページ(範囲)119-129
ページ数11
ジャーナルFluid Phase Equilibria
104
C
DOI
出版ステータス出版済み - 3 1 1995

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 物理学および天文学(全般)
  • 物理化学および理論化学

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