聚甲基丙烯酸-聚氨酯-聚乙二醇复合物的热敏性研究  

The Study of the Thermosensitivity on the PMAA PU PEG Complex

作　　者：朱惟德[1] 陈洁[1] 华家栋[1] 龚振邦[2] 汪勤悫[2] 郭锡章[2] 

机构地区：[1]上海大学化学与化工学院,上海201800 [2]上海大学机械与电子工程学院,上海201800

出　　处：《上海大学学报（自然科学版）》1999年第5期381-384,共4页Journal of Shanghai University:Natural Science Edition

基　　金：国家自然科学基金

摘　　要：本文报道了聚甲基丙烯酸－聚氨酯－聚乙二醇复合物的热敏性研究．分别采用水和Ｎ，Ｎ－二甲基乙酰胺作溶剂，通过溶液聚合制得部分皂化聚甲基丙烯酸和聚甲基丙烯酸．再分别用水性和溶剂型聚氨酯交联制成交联型薄膜．然后在不同温度条件下，在不同浓度的聚乙二醇水溶液中测定其平衡溶胀度的变化，并且对结果进行了比较．结果表明：聚甲基丙烯酸交联薄膜在温度为３０ ℃左右时其平衡溶胀度出现突变。This paper reports the study of thermosensitivity on the PMAA PU PEG complex. The membranes were prepared by the aqueous and the solvent solution polymerization with water and N,N dimethylacetamide respectively, and then crosslinked with polyurethane. The degrees of equilibrium swelling were determined in dilute polyoxyethylene solutions of different concentrations at different temperatures. The results showed that the degree of the equilibrium swelling of the membranes changed abruptly at about 30 ℃, and the range of the change from acidic membranes was larger than those from basic ones.

关 键 词：热敏性 复合物 聚甲基丙烯酸 聚氨酯 聚乙二醇 

分 类 号：O631.22[理学—高分子化学] O632.51[理学—化学]