Fluoro- vs hydrocarbon surfactants: Why do they differ in wetting performance?
Fluoro- vs hydrocarbon surfactants: Why do they differ in wetting performance?
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DOI：
10.1016/j.cis.2014.04.003
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发表时间：
2014-08-01
影响因子：
15.6
通讯作者：
Ivanova, N.
中科院分区：
文献类型：
--
作者：
Kovalchuk, N. M.;Trybala, A.;Ivanova, N.
含氟表面活性剂是降低水溶液表面张力的最有效的化合物，但它们与低能烃固体相关的润湿性能劣于烃三硅氧烷表面活性剂，尽管后者在水溶液中表现出更高的表面张力。为了解释这种不一致性，讨论了含氟表面活性剂在液体/蒸气，固体/液体和固体/蒸气界面上的吸附的可用数据相比，烃类表面活性剂。含氟表面活性剂在烃类固/水界面上的低吸附自由能对它们的润湿性具有重要意义。(C)2014作者由爱思唯尔公司出版
Fluorosurfactants are the most effective compounds to lower the surface tension of aqueous solutions, but their wetting properties as related to low energy hydrocarbon solids are inferior to hydrocarbon trisiloxane surfactants, although the latter demonstrate higher surface tension in aqueous solutions. To explain this inconsistency available data on the adsorption of fluorosurfactants on liquid/vapour, solid/liquid and solid/vapour interfaces are discussed in comparison to those of hydrocarbon surfactants. The low free energy of adsorption of fluorosurfactants on hydrocarbon solid/water interface should be of a substantial importance for their wetting properties. (C) 2014 The Authors. Published by Elsevier B.V.