C9pPHCNa与C_(10)TABr混合水溶液的表面吸附和胶团形成  

Surface Adsorption and Micelle Formation of C9pPHCNa and C_(10)TABr Mixed Aqueous Solutions

作　　者：马艳华[1] 姜蓉[1] 赵剑曦[1] 

机构地区：[1]福州大学化学化工学院应用化学系,福州350002

出　　处：《物理化学学报》2005年第8期939-943,共5页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20173010)资助项目~~

摘　　要：羧酸盐Gemini表面活性剂C9pPHCNa与季铵盐表面活性剂十烷基三甲基溴化铵(C10TABr)混合水溶液的胶团生成能力、降低水表面张力的能力和效率均出现明显的增效.当C9pPHCNa在溶液中的摩尔分数(α1)为0.33时,cmcT(临界胶团总浓度)、γcmc(临界胶团总浓度对应的表面张力)、c20,T(降低20mN·m-1水表面张力所需的表面活性剂总浓度)这3个指标均达到最低值,分别为0.60mmo·lL-1、23.5mN·m-1和1.58×10-5mol·L-1.在所有考察的溶液比例范围内,二组分在混合胶团和表面吸附层中的组成均接近等摩尔比,表现出强烈的分子间相互作用.The surface adsorption and micelle formation of the mixed anionic Gemini surfactant （C9ρPHCNa） and cationic conventional surfactant （C10TABr） aqueous solutions have been investigated by surface tension method. The synergism occurred in the mixed systems and yielded maximum synergism at the mole fraction of C9ρPHCNa in the bulk （α1） equaling to 0.33, where the two components equal electricity mixing in solution. The corresponding minimum values of the critical micelle concentration （cmcT）, the surface tension （γcmc） and the total concentration required to reduce 20 mN·m^-1 surface tension of water （c20,T） are respectively 0.60 mmol·L^-1, 23.5 mN·m^-1 and 1.58×10^-5 mol·L^-1. Over the range of α studied, the molar compositions of C9ρPHCNa and C10TABr both in the micelle and on the surface are close each other, which reflects strong interaction between the molecules.

关 键 词：羧酸盐Gemini表面活性剂 正/负离子混合体系 相互作用 

分 类 号：O647.2[理学—物理化学] O648[理学—化学]