甜菜碱型两性离子聚合物P(AM-DMAPAAS)的盐溶液性质  

Salt Solution Properties of a Zwitterionic Copolymer P(AM-DMAPAAS)

作　　者：丁伟[1] 毛程[1] 韦兆水[1] 李明[1] 于涛[1] 曲广淼[1] 

机构地区：[1]东北石油大学化学化工学院,大庆163318

出　　处：《应用化学》2011年第5期555-559,共5页Chinese Journal of Applied Chemistry

基　　金：黑龙江省自然科学基金重点项目(ZJG0507)

摘　　要：将丙烯酰胺丙基二甲基胺(DMAPAA)和1,3-丙基磺内酯,在55℃下反应20 h,合成了3-(丙烯酰胺丙基二甲胺基)丙磺酸盐(DMAPAAS),将其在盐溶液中与丙烯酰胺(AM)单体进行自由基共聚合反应,获得净电荷为零的磺基甜菜碱型两性离子共聚物P(AM-DMAPAAS);对该两性离子共聚物进行了表征和溶解性评价。研究结果表明,共聚物在NaCl溶液中的粘度比在纯水中的大,在Mg2+和Ca2+盐溶液中的粘度更大,且随着溶液浓度的增大而增大,表现出明显的反聚电解质溶液性质。升高相同温度,两性离子共聚物的粘度保留率是普通聚丙烯酰胺的1.4倍。A zwitterionic monomer of 3-（N,N-dimethylamino-N-sulfopropane propyl acrylamide）（DMAPAAS） was prepared by the ring opening reaction of 1,3-cyclopropanesultone with N,N-dimethylamino propyl acrylamide（DMAPAA） at 55 ℃ for 20 h.Zwitterionic copolymers P（AM-DMAPAAS） containing sulfobetaine groups were synthesized by copolymerization of AM and DMAPAAS in aqueous solution.The copolymers were characterized and the solubility of copolymers P（AM-DMAPAAS） was evaluated.The viscosity of the copolymers was determined.The results show that the viscosity of the copolymers in brine solution is greater than that in deionized water,and the viscosity in Mg2＋ and Ca2＋ salt solution is increased as the salt concentration is increased.The copolymers exhibit a typical antipolyelectrolyte behavior.Under the situation where the same temperature is increased,the viscosity retention of the zwitterionic copolymer is 1.4 times of that of PAM.

关 键 词：两性离子聚合物 反聚电解质溶液性质 粘度 共聚 

分 类 号：O631[理学—高分子化学]