Zhang Lu, Luo Lan, Zhao Sui, Yang Baohua, Yu Jiayong
Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100101, People's Republic of China.
J Colloid Interface Sci. 2003 Apr 15;260(2):398-403. doi: 10.1016/s0021-9797(02)00202-3.
Experimental studies have been conducted to elucidate the mechanisms responsible for synergism/antagonism for lowering dynamic interfacial tension (IFT) in surfactant/alkali/hydrocarbon and surfactant/alkali/acidic model oil systems. Dynamic IFTs between hydrocarbon/acidic model oil and alkali/surfactant solutions were measured. We learned from our experimental results that alkali has the function of decreasing n(min) values of surfactant solutions. The synergism/antagonism for lowering the stable values of dynamic IFTs in surfactant/alkali/hydrocarbon and surfactant/alkali/acidic model oil systems depends on factors that can change the EACN/n(min) value, such as the oleic acid in the oil phase and the n(min) values of surfactant and alkali. A new explanation with respect to EACN/n(min) values is provided.
已经开展了实验研究，以阐明在表面活性剂/碱/烃以及表面活性剂/碱/酸性模型油体系中降低动态界面张力（IFT）的协同/拮抗作用的相关机制。测量了烃/酸性模型油与碱/表面活性剂溶液之间的动态界面张力。从实验结果中我们了解到，碱具有降低表面活性剂溶液n(min)值的功能。在表面活性剂/碱/烃和表面活性剂/碱/酸性模型油体系中，降低动态界面张力稳定值的协同/拮抗作用取决于能够改变EACN/n(min)值的因素，例如油相中的油酸以及表面活性剂和碱的n(min)值。提供了关于EACN/n(min)值的一种新解释。
