乙二醇对十四烷基三甲基溴化铵胶束化热力学参数的影响

The influence of ethylene glycol for micellar thermodynamic parameters of tetradecyltrimethyl ammonium bromide

通过电导率法分别测定了不同温度下不同浓度EG与TTAB复配体系的临界胶束浓度.研究了阳离子表面活性剂十四烷基三甲基溴化铵(TTAB)与乙二醇(EG)的相互作用,以及温度对TTAB体系CMC的影响,并计算相关热力学函数.结果表明,随温度升高,TTAB体系的CMC呈递增趋势;温度对EG-TTAB复配体系CMC值有影响.

The CMC of EG-TTAB was measured respectively by conductivity method.The interaction between the cationic surfactant tetradecyl trimethyl ammonium bromide（TTAB）and polarity solvent EG were studied.The influence on the CMC of TTAB was researched at different temperature,and the relevant thermodynamic parameters were obtained.The results indicate the CMC of TTAB increase with the increase of the temperature.The CMC of EG-TTAB are affected by temperature.