高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (6): 968.

• 论文 • 上一篇    下一篇

壳聚糖-丝心蛋白合金膜的研究(Ⅱ)──半互穿聚合物网络型膜对pH和离子的敏感性

陈新, 李文俊, 钟伟, 葛昌杰, 王汉夫, 于同隐   

  1. 复旦大学高分子科学系, 上海 200433
  • 收稿日期:1995-06-14 出版日期:1996-06-24 发布日期:1996-06-24
  • 通讯作者: 陈新,男,27岁,博士研究生.
  • 作者简介:陈新,男,27岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Studies on Chitosan-Fibroin Blend Membranes(Ⅱ)──The pH and Ion Sensitivities of Semi-IPN Membranes

CHEN Xin, LI Wen-Jun, ZHONG Wei, GE Chang-Jie, WANG Han-Fu, YU Tong-Yin   

  1. Department of Macromolecular Science, Fudan University, Shanghai 200433
  • Received:1995-06-14 Online:1996-06-24 Published:1996-06-24

PDF (PC)

被引次数

21

摘要： 研究了壳聚糖-丝心蛋白半互穿聚合物网络型膜对pH值和离子的敏感性,发现该膜在pH<3.3时溶胀度剧烈增加;在pH=2时,是否出现溶胀极大值与膜组分的含量及交联剂的含量有关;膜在不同pH值溶液中可交替溶胀和收缩,且这种溶胀-收缩行为重复可逆。同时,该膜在不同离子溶液中的溶胀度亦不同;在相同离子强度的溶液中,此膜在3价离子中的溶胀度最大。

关键词: 壳聚精, 丝心蛋白, 半互穿聚合物网络, pH值, 离子敏感性

Abstract: The chitosan-fibroin semi-IPNmembranes have been prepared and the pHand ion sensitivities as well as the reversibility of swelling between the different pHbuffer solutions have been studied.The results showed that the water swelling ratios of the semi-IPNmembranes increased dramatically when pH <3.3 and the semi-IPNmembrane showed better pHsensitivity than the uncrosslinked chitosan fibroin blend membrane.It also showed that the appearance of the maximum swelling ratio of semi-IPN membranes at pH=2 was related to the composition of membrane and the content of crosslinking agent.In the meantime,the membrane could swell and contract when pHwas alternately changed and the reversibility was rather good.In addition,the water swelling ratio was larger in the trivalent ion solution than those in the monovalent and the bivalent ion solutions with the same ionic strength.

Key words: Chitosan, Fibroin, Semi-IPN, pH value, Ion sensitivity

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