Department of Chemistry, Aligarh Muslim University, Aligarh, India.
J Colloid Interface Sci. 2011 Jul 15;359(2):467-73. doi: 10.1016/j.jcis.2011.03.083. Epub 2011 Apr 12.
Micellization of binary systems of a cationic gemini surfactant butanediyl-1,4-bis(dimethylcetylammonium bromide) (16-4-16) and cationic/nonionic hydrotropes (aniline-hydrochloride, 2-methylanilinehydrochloride, 4-methylanilinehydrochloride, hydroxybenzene, 1,3-benzenediol, benzene-1,2,3-triol) have been studied using a conductometric technique. The critical micelle concentrations (cmc) for different mixing mole fractions at different temperatures have been calculated. To explain and compare the results, theoretical models of Clint, Rubingh and Motomura have been used to obtain the ideal cmc, mixed micelle composition, interaction parameters (β(m)), free energies of micellization, and activity coefficients. The mixtures show nonideal behavior and the interactions between the surfactants and the hydrotropes are synergistic in nature which is confirmed by high negative β(m) values and low values of the activity coefficients. Thermodynamic parameters were also obtained from the temperature dependence of the cmc values.
使用电导法研究了阳离子双子表面活性剂丁二基-1,4-双（二甲基十六烷基溴化铵）（16-4-16）与阳离子/非离子型增溶剂（苯胺盐酸盐、2-甲基苯胺盐酸盐、4-甲基苯胺盐酸盐、苯酚、1,3-苯二酚、苯-1,2,3-三醇）的二元体系的胶束化。计算了不同温度下不同混合摩尔分数的临界胶束浓度（cmc）。为了解释和比较结果，使用了克林特、鲁宾和本庄的理论模型来获得理想的 cmc、混合胶束组成、相互作用参数（β(m)）、胶束化自由能和活度系数。混合物表现出非理想行为，表面活性剂与增溶剂之间的相互作用具有协同性质，这可以通过高负β(m)值和低活度系数值来证实。还从 cmc 值随温度的变化获得了热力学参数。
