阳离子单体TEAA和DEBAA的制备及与AM的共聚  

Preparation of Cationic Monomers TEAA and DEBAA and Their Copolymerization with AM

作　　者：胡星琪[1] 李虹[1] 周红霞[1] 郭川梅[1] 

机构地区：[1]西南石油学院化学工程系,四川南充637001

出　　处：《四川大学学报（工程科学版）》2001年第4期74-77,共4页Journal of Sichuan University (Engineering Science Edition)

基　　金："油气藏地质及开发工程"国家重点实验室开放基金PLN0 12 0 );石油天然气股份公司基金 (部 341)项目资助

摘　　要：通过在N+原子上引入较大的烷基制备两种阳离子单体丙烯酰氧乙基三乙基溴化铵 (TEAA)和丙烯酰氧乙基二乙基丁基溴化铵 (DEBAA) ,并分别同丙烯酰胺 (AM)共聚合成了两种阳离子共聚物TEAA -co -AM和DEBAA-co -AM ,测定了各自的竞聚率。以硝酸银滴定测定了阳离子度。研究了共聚物水溶液的流动性质 ,这两类共聚物在水溶液中的比浓粘度都随盐浓度增大而增高 ,这是由于在盐溶液中盐度增大介质极性增强 ,至使大分子中较大烷基逃逸水相并发生自缔合的倾向更强烈的原因。Two type of cationic monomer triethyl acryloyloxyethylammonium bromide(TEAA) and diethyl butyl acryloyloxy ethyl ammonium bromide(DEBAA) are prepared by their bonded bigger alkyl group at N + atom .Their copolymers with acrylamide TEAA-co-AM and DEBAA -co-AM are synthesized respectively. The monomer reactivity ratios are measured. The cationic degree(CD) is determined by AgNO 3 solution titration .THe flowing property of copolymer solution is investigated.The reduced viscosity of TEAA-co-AM and DEBAA-co-AM in aqueous solution increases with increasing of the concentration of salts ,because the medium polarity in salt solution is stronger,so the tendency of escaping from the water phase and self associating of bigger alkyl groups in macromolecules changes powerful.

关 键 词：阳离子单体 共聚 竞聚率 比浓粘度 TEAA DEBAA 制备 AM 丙烯酰氨 丙烯酰氧乙基三乙基溴化铵 丙烯酰氧乙基二乙基丁基溴化铵 

分 类 号：O632.6[理学—高分子化学]