Mechanism of Vesicle Formation of Surfactant

Abstract

摘要 囊泡是由两个双亲分子定向单层尾对尾地结合成封闭单分子双层所构成的外壳,和壳内包藏的微水相构成。一般说来,具有大极性头基和双柔性链表面活性剂可以自发形成囊泡。由于大多数表面活性剂的分子都不具有这样的分子结构,为了要使一般表面活性剂能够自组装形成囊泡,则通常采用两种表面活性剂复配的方法,使两个头基结合在一起(如正、负离子头基相互吸引等)以满足自发形成囊泡的分子结构要求。目前大多数有关表面活性剂囊泡性质的研究都是采用两种表面活性剂复配的体系,并根据Israelachvili所提出的“聚集体临界堆积常数(P)公式”和透射电镜来研究囊泡体系的性质。而对于囊泡形成动力学以及囊泡形成的机理还研究...Abstract Vesicle is composed of crust which forms from closed unimolecule-bilayer that combined with monolayers of two amphiphilic molecules in tail-to-tail orientationally, and micro-hydrofacies that is contained within the crust. Generally speaking, the surfactant which has big polar head-group and two flexible chains can spontaneously form vesicles. Though most of surfactants don't have such m...学位:理学硕士院系专业:化学化工学院化学系_物理化学(含化学物理)学号:20042515

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