W/O/W乳液的渗透溶胀

<正>W/O/W或/O/W/O多重乳状液是一种复分散体系.早在1925年它就被人们所发现.直到最近,由上人们发现它可广泛用于液膜分离技术、固定化酶、体内解毒以及控制释放等领域,因而对多重乳状液的研究工作越来越受到重视.对于乳液溶胀,至今尚未有过系统的研究报道.根据分析及实验结果,溶胀是由渗透与夹带两个因素引起的.本文建立了W/O/W乳液的渗透溶胀模型,并通过实验研究了影响溶胀的因素.

Permeation Swelling in W/O/W Multiple Emulsions

A permeation swelling model for W/O/W multiple emulsions was developed. Both the osmotic pressure difference between the internal and the external phases and the changes of permeation area with time were considered to obtain the analytic solutions. The model predictions were in good agreement with the experimental data. The experimental results indicate that apart from the osmotic pressure gradients, the membrane compositions such as the membrane solvents, the surfactants and the carriers also influenced the swelling. The effect of the oxygen-containing compounds on the swelling was larger than that of the nitrogen-containing compounds.