WETTING OF LOW-ENERGY SURFACES BY NONAQUEOUS SOLUTIONS OR DIMETHYLSILOXANE-CONTAINING OR FLUOROCARBON-CONTAINING SURFACTANTS

被引:11
作者
BASCOM, WD
HALPER, LA
JARVIS, NL
机构
[1] Laboratory for Chemical Physics, Naval Research Laboratory, Washington
来源
INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT | 1969年 / 8卷 / 02期
关键词
D O I
10.1021/i360030a004
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The wetting of low-energy solid surfaces by nonaqueous solutions was investigated with solutions of copolymers of dimethylsiloxane-ethylene oxide and solutions of fluorocarbon-containing surfactants. The organic liquids studied were propylene carbonate, bis(2-ethylhexyl)sebacate, isopropylbiphenyl, and a partially chlorinated biphenyl. Surface tension vs. concentration isotherms are reported for the surfactants in these liquids. The solid surfaces studied were polyethylene, Teflon, stearic acid monolayers on stainless steel, and 11-(perfluorodecyl)undecanoic acid monolayers on stainless steel. The surfactants did not cause spontaneous spreading of the organic liquids, even when the solution surface tensions were depressed below the critical surface tensions of wetting of the solids. This failure to spread appears to be related to adsorption of surfactant at the organic solid-air interface and to the failure of the surfactants to reduce the organic solid-organic liquid interfacial tensions significantly. © 1969, American Chemical Society. All rights reserved.
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页码:118 / &
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