文献类型：期刊文献

英文题名：Interactions between Sodium Polyacrylate and Mixed Micelles of Dodecyltrimethylammonium Bromide and Sodium Bis(2-ethylhexyl) Sulfosuccinate

作者：Zheng, Peizhu[1];Cai, Dongxing[2];Zhang, Zhiguo[1];Yang, Yan[1];Yin, Tianxiang[1];Shen, Weiguo[1,2]

机构：[1]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China

年份：2013

卷号：46

期号：1

起止页码：247

外文期刊名：MACROMOLECULES

收录：;EI(收录号：20130315905840);WOS:【SCI-EXPANDED(收录号:WOS:000313303600029)】；

基金：This work was supported by the National Natural Science Foundation of China (projects 20973061 and 21173080).

语种：英文

外文关键词：Sodium - Scanning electron microscopy - High resolution transmission electron microscopy - Micelles

摘要：The interactions between sodium polyacrylate (PANa) and mixed micelles of dodecyltrimethylammonium bromide (DTAB) and sodium bis(2-ethylhexyl) sulfosuccinate (AOT) were studied by isothermal titration calorimetry (ITC), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It was found that the interaction mechanism varies with the titration order. For titration of PANa/AOT by DTAB, DTAB monomers first participate in the formation of AOT/DTAB mixed micelles, then bind to polymer individually, and subsequently result in the polymer-induced micellization characterized by two endothermic peaks. Only one endothermic peak was observed for titration of PANa by AOT/DTAB mixed micelle, corresponding to binding of the mixed micelles to the polymer. Exothermic peaks were observed for both types of titration characterizing the cross-link of the polymer chains. These interaction mechanisms were also interpreted by a thermodynamic model and confirmed by the measurements of SEM and TEM.