AM-nBS-SSS三元疏水缔合聚合物PAnBS的合成及溶液性能  

Synthesis and Solution Properties of Acrylamide-4-vinylbenzenesulfonate-n-butyl Styrene Tercopolymer PAnBS

作　　者：刘侨[1] 刘磊[1] 徐斌[1] 马超[1] 李骑伶[1] 代华[1] 张熙[1] 

机构地区：[1]四川大学高分子研究所高分子材料工程国家重点实验室,四川成都610065

出　　处：《精细化工》2013年第6期674-679,共6页Fine Chemicals

基　　金：高分子材料工程国家重点实验室自主研究课题(GFZ2008005)~~

摘　　要：以对正丁基苯乙烯(nBS)、对乙烯基苯磺酸钠(SSS)和丙烯酰胺(AM)为原料,采用自由基胶束聚合法合成了阴离子型三元疏水缔合聚合物PAnBS,用红外光谱法、紫外光谱法以及核磁共振氢谱法对共聚物的结构进行了表征;考察了不同反应条件对共聚物溶液表观黏度的影响,得到了具有较强增黏能力的聚合物合成工艺条件:nBS、SSS和引发剂用量分别为总单体摩尔分数的1.5%、9%和0.1%,总单体和表面活性剂十二烷基硫酸钠(SDS)在溶液中的质量分数分别为25%和6%,反应温度50℃,反应时间10 h。与相对分子质量(简称分子量,下同)1 970万、水解度19.43%的超高分子量部分水解聚丙烯酰胺(HPAM)相比,所得PAnBS在NaCl或CaCl2水溶液中具有更强的增黏能力;PAnBS在淡水或盐水溶液中于80℃下的耐老化性能优于超高分子量HPAM,表现出优良的耐温抗盐性能。A hydrophobically associating anionic terpolymer PAnBS was prepared by free-radical micelle copolymerization of aerylamide, sodium 4-vinylbenzenesulfonate （SSS） and n-butyl styrene （nBS）. PAnBS offers a solution to the the problem of poor thermal stability of the hydrophobically associating water-soluble polymers. The structure of the synthesized polymer was characterized by means of UV, FTIR, and 1HNMR. The influence of polymerization reaction conditions on the apparent viscosity of the polymerization product aqueous solution was studied. The optimum reaction conditions were determined as follows：mole percentage of nBS, SSS and initiator were 1.5% ,9% and 0. 1% relative to total monomers,mass percentage of total monomers and surfactant（SDS） were 25% and 6%, and the reaction temperature and reaction time were 50 ~C and 10 h respectively. The viscosity-increasing ability of PAnBS prepared under the above reaction conditions in sodium chloride or calcium chloride aqueous solution is stronger than that of partially hydrolyzed polyacrylamide with molecular weight of 1.97 x 107 and hydrolysis degree of 19.43%. The viscosity of polymer aqueous solution declined slightly with the increase of temperature, which indicate that the synthesized copolymer had good performance of salt and temperature resistance.

关 键 词：疏水缔合聚合物 对正丁基苯乙烯 对乙烯基苯磺酸钠 丙烯酰胺 阴离子聚合物 自由基胶束聚合 聚合 物溶液 油田化学品与油品添加剂 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程] TE39