(W/O/)/W表面活性剂液膜体系的溶胀现象——(Ⅱ)渗透溶胀过程的模拟

The Swelling Behavior of (W/O)/W Liquid Surfactant Membrane (Ⅱ) Modeling of the Permeation Swelling Process

提出渗透溶胀的溶解-扩散机理,由球体扩散微分方程导出了渗透溶胀的数学模型.该模型的突出优点是不含任何可调参数且能得到较准确的结果.对数种表面活性剂和载体的加溶水率进行了实验测定.

The transfer of water through the organic phase of kerosene containing surfactants Span80, L113B and certain carriers was studied theoretically and experimentally in (W/O)/W LSM. The process of swelling owing to osmotic pressure can be pictured as solubilization of water in the membrane phase caused by surfactants and carriers and then its diffusion through the membrane between the two aqueous phases due to a gradient of chemical potential. The data of solubilization of water in oil caused by surfactants and carriers were measured. A mathematical model containing no adjustable parameters for estimating the 'permeation swelling' rate, Fso, was developed. The predicted values agreed well with the experimental data of Fujinawa (1984), Ma Xin-sheng (1987) and the authors.