日用化学工业2012，Vol.42Issue(6)：405-409,5.
系列羟基磺基甜菜碱表面活性剂的合成及胶束化行为研究
Synthesis of a series of hydroxy-sulfobetaine surfactant and their micelle formation behavior
摘要
Abstract
Three hydroxy — sulfobetainu surfactants with different carbon chain length were synthesized from long chain alkyl tertiary amine and sodium 3 - chloro - 2 - hydroxypropanesulfonate as starting materials. Their structures were characterized by elemental analysis, MS, HNMR and FTIR. Their critical micelle concentrations ( cmc) in aqueous solutions at different temperature were determined and their micelle formation behavior was studied. Results showed that when the carbon number in the hydrophobia chain increases from C8 to C14 at 25 ℃ ,the values of their cmc decreases from 1. 32 × 10 -2 mol · L-1 to 1. 67 × 10-4 mol · L-1 ,and surface tensions under cmc (γcmc) decreases from 35. 9 mN · m to 34. 6 mN · m . For a same surfactant, with the increase of temperature, the values of its cmc increases slightly, while the values of its γcmc decreases slightly. The calculation of thermodynamic parameters of micelle formation showed that the process of micelle formation is driven by the entropy.关键词
羟基磺基甜菜碱表面活性剂/表面张力/胶束化行为/热力学Key words
hydroxy —sulfobetaine surfactants / surface tension/ micelle formation/ thermodynamics分类
化学工程引用本文复制引用
朱海林,胡志勇,王建龙,常婧,李慧珍..系列羟基磺基甜菜碱表面活性剂的合成及胶束化行为研究[J].日用化学工业,2012,42(6):405-409,5.基金项目
山西省回国留学人员科研资助项目(2011-069) （2011-069）
