文献类型：期刊文献

中文题名：W_1/O/W_2型乳液稳定性的研究

英文题名：Investigation on the Stability of Liquid Surfactant Membrane

作者：张平[1];路琼华[1];蒋楚生[1];李盘生[1]

机构：[1]华东化工学院化学工程系

年份：1993

卷号：19

期号：2

起止页码：119

中文期刊名：华东化工学院学报

外文期刊名：Huadong Huagong Xueyuan Xuebao/Journal of East China Institute of Chemical Technology

收录：EI(收录号：1994031239832);Scopus;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：稳定性;表面活性剂;乳状液;分离

外文关键词：liquid membrane;stability;surfactant;emulsion;swelling

摘要：阐述了表面活性剂浓度、外加剪力和内、外相水溶液的渗透压差,是W_1/O/W_2双重型乳液产生破裂和溶胀的重要因素。提出了这些因素引起乳液滴破裂和溶胀的原因和机理。推导了表面活性剂最佳用量的理论计算式。实验测定了各种因素对乳液破裂率和溶胀率的影响。实验结果均能用本文提示的机理合理地解释。
In the process of separation of a component from a liquid by liquid surfactant membrane, an emulsion system of W_1/O/W_2 is formed. In this investigation, it is found that the breakage and svelling of this type of emulsion system are affected by the concentration of the surfactant, the applied external shear stress and difference in osmotic pressures of the internal and external aqueous phasses. Their mechanisms are discussed. From the arrangement of surfactant molecules within the liquid film, the following conclusions are obtained. If the concentration of surfactant is too low, the W_1/O emulsion drop will break easily; if the concentration is too high, then the W_1/O emulsion drops will swell easily. The optimum concentration of surfactant in the liquid emulsion membrane can be calculated. Experiments were carried out to measure the factors affecting the percentage breakage and swelling. They are in close agreement with that deduced from proposed mechanism.