SDS/BA/H_2O体系的扩散系数与结构特性

Diffusion Coefficient and Structure Properties of SDS/ BA/ H_2O System

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．

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.