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SDS/BA/H2O体系的扩散系数与结构特性
Diffusion Coefficient and Structure Properties of SDS/ BA/ H2O System
【摘要】 在无探针条件下,用电化学方法测定了SDS/BA/H2O三组分体系的扩散系数和扩散活化能.结果表明,L1区域由O/W结构做乳液与油、水观连续结构徽乳液(BI)两个小区域组成,并不是单一的O/W区域.在O/W区域内,微乳液以液滴状态存在,具有较好的扩散性能和较小的扩散活化能;在BI区域,水与BA同作为连续相与被增溶相存在,统合体系呈网络结构,扩散性能较低,扩散活化能较大.
【Abstract】 Micelle diffusion coefficient and diffusion activation energy of SDS/BA/H2O system aredctermined by electrochemical methods without any probe. The results show that L1 area is not asingle O/W microemulsion, it consists of two small regions - O/W microemulsion and oil-waterbicontinuous microemulsion,. The microemulsion exists in liquid drop in O/W microemulsion andin net-structure in oil-water bicontinuous microemulsion. The diffusion property is better anddiffusion activation energy smaller in the former than in the latter.
【Key words】 Cyclic voltammogram; Diffusion coefficient; Activation energy; Microemulsion; Micelle;
- 【文献出处】 物理化学学报 ,ACTA PHYSICO-CHIMICA SINICA , 编辑部邮箱 ,1997年05期
- 【分类号】O646
- 【被引频次】9
- 【下载频次】109