水溶液中SET-LRP法制备两性离子聚丙烯酰胺  

Synthesis of Amphoteric Polyacrylamide by Single Electron Transfer Living Radical Polymerization in Aqueous Solution

作　　者：丁伟[1] 赵那娜 刘康[2] 曲广淼[1] 栾和鑫[2] 

机构地区：[1]东北石油大学化学化工学院石油与天然气化工省重点实验室,黑龙江大庆163318 [2]中国石油天然气股份有限公司新疆油田分公司,新疆克拉玛依834000

出　　处：《高分子材料科学与工程》2015年第5期9-13,共5页Polymer Materials Science & Engineering

基　　金：国家重大科技专项基金(2008ZX05011);国家重点基础研究发展规划"973"项目(2005CB221300);黑龙江省研究生创新科研项目(YJSCX2008-044HLJ)

摘　　要：以可聚合离子液体表面活性剂氯化-1-正辛基-3-(4-丙烯酸丁酯基)咪唑(PMOIH8)、丙烯酰胺(AM)以及2-丙烯酰胺基-2-甲基丙磺酸钠(Na AMPS)为单体,采用单电子转移活性自由基聚合(SET-LRP)法进行了三元共聚合反应,合成了一种两性离子聚丙烯酰胺P(AM/PMOIH/Na AMPS)。分析结果表明所得产物为目标产物。考察了Cu Cl2、引发剂、温度等因素对聚合的影响。结果表明,体系中未加Cu Cl2时,聚合反应速率变慢,速率常数(kappp)由0.0144 min-1降低至0.0117 min-1,珚Mw/珚Mn由1.30增大为1.38,引发效率(Ieff)降低至92.76%;增加引发剂用量,kappp增加至0.0153 min-1,珚Mw/珚Mn减小为1.26,Ieff增加至95.18%;降低温度,kappp降低至0.0102 min-1,珚Mw/珚Mn减小为1.28,Ieff降低至92.97%。A kind of copolymer amphoteric polyacrylamide was synthesized via single electron transfer living radical polymerization( SET-LRP) of monomers polymerizable ionic liquid surfactant named chlorinated-1-octyl-3-( 4-butylacrylate-based) imidazole( PMOIH8),acrylamide( AM) and sodium 2-acrylamido-2-methyl propane sulfonate( Na AMPS).The resulting polymers were analyzed,and the results show that the polymers are target products. Various factors which might affect SET-LRP such as Cu Cl2,initiator and temperature were discussed. The results show that for the system without Cu Cl2,the polymerization rate decreases and the polymerization rate constant kapppreduces from 0. 0144 min- 1to0. 0117 min- 1,while the relative molecular mass distribution exponential 珚Mw/ 珚Mnincreases from 1. 30 to 1. 38,and the initiator efficiency decreases,Ieff= 92. 76%. As the amount of initiator increases,the polymerization rate constant kappp increases from 0. 0144 min- 1to 0. 0153 min- 1,the relative molecular mass distribution exponential 珚Mw/ 珚Mnreduces from1. 30 to 1. 26,while the initiator efficiency increases from 94. 62% to 95. 18%. As the temperature decreases,the polymerization rate constant kapppreduces from 0. 0144 min- 1to 0. 0102 min- 1,the relative molecular mass distribution exponential 珚Mw/ 珚Mnreduces from 1. 30 to 1. 28,and the initiator efficiency reduces from 94. 62% to 92. 97%.

关 键 词：可聚合离子液体表面活性剂 单电子转移活性自由基聚合 丙烯酰胺 三元共聚合 

分 类 号：TQ423.3[化学工程]