Measurement of dynamic surface tension to determine critical micellar concentration in lipophilic silicons surfactants
Measurement of dynamic surface tension to determine critical micellar concentration in lipophilic silicons surfactants
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DOI：
10.1016/s0014-827x(00)00083-5
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发表时间：
2000-09-01
期刊：
影响因子：
--
通讯作者：
Gallardo, V
中科院分区：
文献类型：
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作者：
Baquerizo, I;Ruiz, MA;Gallardo, V
有机硅表面活性剂因其多功能性、低成本和技术优势，在医药和化妆品行业中正变得越来越重要。本研究旨在测定三种非离子有机硅表面活性剂的临界胶束浓度。一个是水溶的，两个是脂溶的。我们用一种基于液滴几何形状的技术测量了表面张力。用可见光和紫外光分光光度法考察了两种亲油表面活性剂在水中的溶解性和分散性。用所有技术获得的数据都显示了亲油性有机硅表面活性剂的特征行为，这并不完全符合临界胶束浓度的定义。(C)2000由爱思唯尔科学公司出版，版权所有。
Silicone surfactants are becoming increasingly important in the pharmaceutical and cosmetic industry, because of their versatility, low cost, and technological advantages. The present study was designed to measure the critical micellar concentration of three non-ionic silicone surfactants. one water-soluble and two lipid-soluble. We measured surface tension with a technique based on drop geometry. Solubility and dispersibility in water were tested in the two lipophilic surfactants with visible and UV light spectrophotometry. The data obtained with all techniques showed a characteristic behavior of lipophilic silicone surfactants, which did not entirely conform to the definition of critical micellar concentration. (C) 2000 Published by Elsevier Science S.A. All rights reserved.