胶束修饰疏水缔合聚合物聚合机理及流变性能研究  

Polymerization mechanism and rheological property of micelle-modified hydrophobically coupled polymers

作　　者：文新 王磊[1,2] 王嘉鑫 姚传高 杨蓉 杨雯雯 WEN Xin;WANG Lei;WANG Jia-xin;YAO Chuan-gao;YANG Rong;YANG Wen-wen(Key Laboratory of Light Chemical Auxiliaries for China Light Industry,Shaanxi University of Science and Technology,Xian 710021,China;Shaanxi Research Institute of Agricultural Products Processing Technology,Xian 710021,China;Oil and Gas Technology Research Institute,PetroChina Changqing Oilfield Company,Xian 710018,China;The Third Gas Production Plant,PetroChina Changqing Oilfield Company,Ordos 017399,China)

机构地区：[1]陕西科技大学中国轻工业轻化工助剂重点实验室,陕西西安710021 [2]陕西农产品加工技术研究院,陕西西安710021 [3]中国石油长庆油田油气工艺研究院,陕西西安710018 [4]中国石油长庆油田分公司第三采气厂,内蒙古鄂尔多斯017399

出　　处：《现代化工》2024年第7期161-168,共8页Modern Chemical Industry

基　　金：陕西省重点研发计划(2024GX-YBXM-393);西安市科技计划项目(22GXFW0014);陕西省教育厅项目(23JC008)。

摘　　要：以椰油酰胺丙基甜菜碱(CAB)为分散剂,将油酸(OA)、N,N-二甲基丙二胺(DMAPA)、氯丙烯(AC)合成的疏水单体KS-3与丙烯酰胺(AM)经自由基聚合得到聚合物RES。临界胶束浓度、TEM与粒径测试结果表明,KS-3与CAB在AM单体溶液中混合时呈现良好的协同效应,且可形成蠕虫状胶束。研究KS-3的胶束状态与AM的聚合机理发现,RES具有更好的热稳定性、更小的临界缔合浓度,同时分子聚集更加紧密,在水溶液中形成密度更高的网络结构。利用流变仪对RES进行耐温性、触变性及黏弹性测试,RES展现出优良的耐温性、更大的触变环及更好的黏弹性,且G′>G″,聚合物具有更强的缔合结构。Taking cocamidopropyl betaine(CAB)as the dispersant,the hydrophobic monomer KS-3 synthesized from oleic acid(OA),N,N-dimethylpropylenediamine(DMAPA),and chloropropylene(AC)is polymerized with acrylamide(AM)by free-radical to obtain the polymer RES.Critical micellar concentration,TEM,and particle size tests show that KS-3 and CAB present a good synergistic effect and can form worm-like micelles when they mix in the AM monomer solution.It is found through analyzing the micelle state of KS-3 and the polymerization mechanism between KS-3 and AM that RES has better thermal stability,smaller critical aggregation concentration,and more compact molecular aggregation,forming a higher density network structure in aqueous solution.Through temperature resistance,thixotropy and viscoelasticity tests to RES by a rheometer,RES shows excellent temperature resistance,larger thixotropic loops,and better viscoelasticity.The polymers have stronger associative structure.

关 键 词：蠕虫胶束 协同效应 疏水缔合 触变性 黏弹性 

分 类 号：TE348[石油与天然气工程—油气田开发工程]