波谱学杂志2018，Vol.35Issue(1)：75-80,6.DOI:10.11938/cjmr20172577
1H NMR探究空间效应对表面活性剂复配体系中协同作用的影响
An NMR Study on How Steric Effects Affect Synergistic Effects in Surfactant Mixtures
摘要
Abstract
NMR spectra of aqueous solutions of cetyltrimethylammonium bromide (CTAB)/triton X-100 (TX-100),sodium dodecyl sulfate (SDS)/TX-100 and CTAB/TX-100/SDS surfactant mixtures were acquired.The proton chemical shifts of each component and their dependence on concentration were determined and used to derive the critical micelle concentrations (CMCs) of CTAB,TX-100 and SDS in each mixture.It was found that,in several cases,the role played by the steric effect in the synergism of surfactant mixtures were not less than that of the electrostatic interaction.The larger the cross sectional area of the polar head was,the greater the synergy would be.It is concluded that the steric effect is a major player in the synergistic effect of surfactant mixtures,especially when the electrostatic interaction is weak.关键词
液体核磁共振/表面活性剂复配体系/空间效应/协同作用Key words
liquid state NMR/surfactant mixtures/steric effect/synergistic effect分类
数理科学引用本文复制引用
陈晓瑛,俞刚金,毛诗珍,刘买利,杜有如..1H NMR探究空间效应对表面活性剂复配体系中协同作用的影响[J].波谱学杂志,2018,35(1):75-80,6.基金项目
国家自然科学基金资助项目(21375145,21221064). （21375145,21221064）
