Impact of counterions on micelle formation and polymerization of 11-acryloyloxyundecyltrimethylammonium surfactants
作者:P.A. Fetin、I.M. Zorin、A.A. Lezov、V.I. Fetina、A. Yu Bilibin
DOI:10.1016/j.molliq.2020.113103
日期:2020.7
surfactants based on the cationic monomer 11-acryloyloxyundecyltrimethylammonium with counterions bromide, nitrate, acetate, camphorsulfonate, 4-toluenesulfonate, trifluoroacetate were obtained in this work. In most cases counterions change the critical micelle concentration by 2–3 times (being compared with bromide) except sample with acetate counterions (in this case critical micelle concentration increases
在这项工作中,获得了基于阳离子单体11-丙烯酰氧基十一烷基三甲基铵与抗衡离子溴化物,硝酸盐,乙酸盐,樟脑磺酸盐,4-甲苯磺酸盐,三氟乙酸盐的新型表面活性剂。在大多数情况下,抗衡离子将临界胶束浓度改变了2-3倍(与溴化物相比),除了带有乙酸盐抗衡离子的样品(在这种情况下,临界胶束浓度增加了一个数量级)。用溴化物代替疏水抗衡离子(甲苯磺酸盐,三氟乙酸盐,樟脑磺酸盐)不会导致球形胶束向长蠕虫状胶束的预期转化。此类单体的聚合根据涉及单体胶束的微乳液机理发生。