β-环糊精/丙烯酰胺水凝胶的合成与表征

摘要

采用顺丁烯二酸酐(MAH)对具有分子包结能力的β-环糊精(β-CD)进行化学改性,合成得到丁烯二酸单酯化β-CD单体(MAH-β-CD),再以N,N'-亚甲基双丙烯酰胺作交联剂,亚硫酸氢钠、过硫酸铵为引发剂使MAH-β-CD与丙烯酰胺发生聚合,制备含有β-CD结构单元的新型水凝胶.该水凝胶具有较好的pH值和温度敏感性.%A functional monomer(MAH-β-CD) was synthesized by the modified β-Cyclodextrin(β-CD) with maleic anhydride (MAH) in N,N-dimethylformamide(DMF) at 80 ℃. And, the hydrogel was prepared by polymerization of MAH-β-CD and acrylamide with N,N'-methylene-di-acrylamide as a crosslinker, sodium bisulfite and ammonium persulfate as initiator.The hydrogel had preferable pH and temperature sensitivity .