肿胀 的
聚乙二醇
膜
PEG比率
壳聚糖
千分尺
化学工程
高分子化学
多孔性
化学
材料科学
复合材料
生物化学
物理
光学
财务
工程类
经济
作者
Minfeng Zeng,Zhengping Fang
标识
DOI:10.1016/j.memsci.2004.08.004
摘要
Crosslinked chitosan (CS) membrane with sub-micrometer porous structure was prepared by extraction of polyethylene glycol (PEG) from CS/PEG semi-IPN membrane. The content of PEG and the crosslinking agent has significant effects on the pore structure, swellability, and mechanical properties of the membranes. The membrane is pH sensitive, exhibiting reversibility and rapid response in swelling to pH changes. The swelling ratio oscillated between ca. 120 and 220 when pH was varied between 3.2 and 11. It also has good mechanical strength both in dry and swollen state. Thus, it was expected as potential candidate for biomedical use as environmental pH condition altered.
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