高浓度区正负离子表面活性剂混合胶团的形状与大小变化  

VARIANCE OF SHAPE AND SIZE OF MIXED MICELLES OF CATIONIC-ANIONIC SURFACTANTS AT HIGH CONCENTRATION

作　　者：肖进新[1] 赵国玺[1] 

机构地区：[1]北京大学化学与分子工程学院胶体化学研究室,北京100871

出　　处：《化学研究与应用》2001年第5期502-505,共4页Chemical Research and Application

基　　金：国家自然科学基金资助项目 ( 2 99730 0 2 )

摘　　要：本文研究高浓度区正、负离子表面活性剂混合胶团的形状及大小随浓度的变化规律。根据正、负离子表面活性剂混合体系的相行为 ,胶团溶液的光散射以及流变性质测量 ,提出了混合胶团的棒—球转变模型。认为在较高浓度 ,随浓度增大 ,混合胶团经历了一个长棒变短 。The variance of the shape and size with concentration for the mixed micelles of cationic anionic surfactants at high concentration has been studied.The model of rod to sphere transition of mixed micelles of cationic anionic surfactants has been proposed.It was thought that at relatively high concentration,with the continuing increase of concentration of surfactants,the mixed micelles underwent a transition from long rod like to short rod like,and then to spherical shape.This model was proved by the phase behavior,light scattering and rhelgical properties of such mixed systems.

关 键 词：负离子表面活性剂 混合胶团 形状 相行为 球状胶团 光散射性质 负离子表面活性剂 棒状胶团 流变性质 

分 类 号：O648.1[理学—物理化学] O647.2[理学—化学]