CONTACT ANGLES ON HYDROPHOBIC SOLID-SURFACES AND THEIR INTERPRETATION

被引:336
作者
LI, D
NEUMANN, AW
机构
[1] Department of Mechanical Engineering, University of Toronto, Toronto
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1016/0021-9797(92)90127-8
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Contact angles of 17 liquids on 3 hydrophobic solid surfaces, FC721, fluorinated ethylene propylene, and polyethylene terephthalate, were measured by using the Axisymmetric Drop Shape Analysis-Profile (ADSA-P) technique. Details of the surface preparation and the experiments are presented. The accuracy of these contact angle data is better than 0.2° in most cases. These data were used to calibrate an equation of state for interfacial tensions of solid-liquid systems. The end results of the analysis is an equation of state for interfacial tensions with a single parameter β = 0.0001247 (m2/mJ)2, cf., Eqs. [22]-[24]. Within the experimental limitations, there is no evidence for the notion that β might change from system to system. © 1992.
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页码:190 / 200
页数:11
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