3-烷氧基-2-羟基丙基三甲基溴化铵表面活性的研究  

Study on surfactivities of 3-alkoxy-2-hydroxypropyl trimethylammonium bromide

作　　者：李考真[1] 魏西莲[1] 尹宝霖[1] 潘春华[1] 

机构地区：[1]聊城大学化学化工学院,山东聊城252059

出　　处：《信阳师范学院学报（自然科学版）》2005年第1期45-47,88,共4页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：山东省自然科学基金资助项目 ( Z2 0 0 1 B0 2 )

摘　　要：用滴体积法测定了不同温度下新型阳离子表面活性剂 3 -烷氧基 -2 -羟基丙基三甲基溴化铵的表面张力 ,根据有关公式 ,计算出不同温度下的表面吸附量和热力学函数的变化值 .研究发现 ,同系物的临界胶束浓度随碳链的增加、温度的升高而降低 .The surface tension and surface absorption of a new surfactant,the 3-alkoxy-2-hydroxypropyl trimethylammonium bromide,have been investigated by drop-volume method at different temperature. Some thermodynamic parameters were calculated according to corresponding formula. It was found that the surface tension and critical micelle concentration of C_nNBr decrease with the inerease of the length of hydrocarbon chain and the temperature. The change of thermodynamics functions indicates that the micellization process is a spontaneous endothermic one.

关 键 词：烷氧基 溴化 羟基 阳离子表面活性剂 新型 研究 同系物 热力学函数 碳链 胶束 

分 类 号：N941[自然科学总论—系统科学] TQ463[化学工程—制药化工]