萃取凝胶的合成及性能

Study on the Synthesis and Properties of Extraction Gels

合成了离子型及非离子型凝胶共6种,它们是N-异丙基丙烯酰胺及丙烯酰胺各自的均聚物凝胶和共聚物凝胶。着重研究了凝胶的温敏性能和溶胀性能。此外还考察了溶剂、酸、碱、盐等对凝胶溶胀性能的影响。发现,聚(N-异丙基丙烯酰胺-甲基丙烯酸钠)共聚物凝胶具有温敏特性,而且有不连续相变,它在室温下在水中的溶胀比高于文献报道的任何—种温敏凝胶。

Six kinds of nonionic and ionic gels have been synthesized. They are homopolymer and copolymer gels of N-isopropylacrylamide and acrylamide. The study focused on the temperature sensitive characteristics and the swelling property of these gels. Also investigated was the influence of solvent, acid, alkali and salt on the swelling property of these gels. It is found that the copolymers of N-isopropylaerylamide and sodium methacrylate are temperature sensitive, with swelling ratio higher than those reported in the literature.