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.

文新(1993-),男,博士,工程师,研究方向为高分子合成,1243079561@qq.com;王磊(1981-),男,博士,教授,研究方向为功能分子合成及应用,通讯联系人,05wanglei@sust.edu.cn。