敏感性壳聚糖-聚醚水凝胶的研究  

Studies on Sensitive Chitosan-Polyether Hydrogel

作　　者：董奋强[1] 吴国杰[2] 

机构地区：[1]广东工业大学轻工化工学院,广州510090 [2]仲恺农业技术学院化学化工学院,广州510225

出　　处：《材料导报》2010年第8期37-40,共4页Materials Reports

基　　金：国家自然科学基金资助项目(20776164;20376087);校博士启动基金资助项目(G2360278)

摘　　要：以壳聚糖和聚醚为原料、戊二醛为交联剂合成了壳聚糖-聚醚水凝胶,探讨了壳聚糖-聚醚水凝胶的形成机理,研究了该水凝胶的pH值、酸、碱、盐、温度等敏感性,并通过红外光谱图对其结构进行了分析。结果表明,壳聚糖-聚醚水凝胶具有显著的pH值/温度敏感性,酸、碱、盐的种类和浓度也是影响其溶胀度的重要因素,戊二醛的醛基与壳聚糖分子链上的氨基生成Schiff碱交联,从而形成壳聚糖-聚醚水凝胶三维空间结构。Chitosan-polyether hydrogels are prepared with chitosan and polyether as raw materials, using gluta- raldehyde as crosslinker. The synthesized mechanism of chitosan-polyether hydrogel is researched, pH, acid, alkali, salt and temperature sensitivities of chitosan-polyether hydrogel are studied, and this structure is analyzed by ItL The results show that chitosan-polyether hydrogel has marked pH/temperature sensitivity. The kind and concentration of acid, alkali and salt affect swelling ratio. The three-dimensional structure of hydrogel is formed from Schiff alkali, which is got by reaction of the aldehyde group of glutaraldehyde with the amido of chitosan.

关 键 词：壳聚糖 聚醚 水凝胶 溶胀度敏感性 

分 类 号：O633.22[理学—高分子化学]