Thermodynamic Study on the Micellar Properties of TTAB/Brij 35 Mixed Surfactant Systems

Journal of the Korean Chemical Society

Han-Nae Gil¹  Byung-Hwan Lee¹ 

关键词: Mixed Surfactant System;    TTAB;    Brij 35;    Critical Micelle Concentration;    Counter Ion Binding Constant;    Iso-Structural Temperature;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The critical micelle concentrations (CMC) and the counter ion binding constants (B) in a micellar state of the mixed surfactant systems of Tetradecyltrimethylammonium bromide (TTAB) with Polyoxyethylene(23) lauryl ether (Brij 35) in water were determined as a function of ¥á1 (the overall mole fraction of TTAB) by the use of electric conductivity method and surface tensiometer method from 15 oC to 35 oC. Values of thermodynamic parameters (¥ÄGom, ¥ÄHom, and ¥ÄSom) for the micellization of TTAB/Brij 35 mixtures were calculated and analyzed from the temperature dependence of CMC values. The results say that the measured values of ¥ÄGom are all negative at the whole measured condition but the values of ¥ÄSom and ¥ÄHom are positive or negative, depending on the measured temperature and ¥á1.

【 授权许可】

Unknown