Synthesis, Characterization and Surface Properties of Series Sulfobetaine Surfactants
作者:Guangmiao Qu、Jiecheng Cheng、Jijun Wei、Tao Yu、Wei Ding、Huoxin Luan
DOI:10.1007/s11743-010-1212-9
日期:2011.1
A series of surface active sulfo‐propane betaines and sulfo‐butane betaines were synthesized with high yields by the reaction of an appropriate N,N‐dimethyl alkylamine with an excess of 1,3‐propane sultone and 1,4‐butane sultone. The structures were characterized by 1H‐NMR spectroscopy and elemental analysis. The micellar properties of these compounds were determined by surface tension methods. Surface
通过适当的N,N-二甲基烷基胺与过量的1,3-丙烷磺酸内酯和1,4-丁烷磺酸内酯的反应,可以高收率合成一系列表面活性的磺基丙烷甜菜碱和磺基丁烷甜菜碱。结构通过1 H-NMR光谱和元素分析表征。这些化合物的胶束性质通过表面张力方法确定。表面张力测量还提供有关CMC(γcmc),pC 20(将表面张力降低20 mN / m所需的表面活性剂摩尔浓度C 20的负对数),表面过量(最大Γ)在空气/溶液界面处,每个表面活性剂分子在空气溶液界面(A)的最小面积。