Contact Angle of Ethanol and n-Propanol Aqueous Solutions on Metal Surfaces

被引：22

作者：

Fan, Li-ting ^{[1
]}

Yuan, Xi-gang ^{[1
]}

Zhou, Chang-xin ^{[1
]}

Zeng, Ai-wu ^{[1
]}

Yu, Kuo-Tsung ^{[1
]}

Kalbassi, Mohammad ^{[2
]}

Porter, Ken ^{[3
]}

机构：

[1] Tianjin Univ, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

[2] Air Prod PLC, Surrey, England

[3] Aston Univ, Birmingham B4 7ET, W Midlands, England

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2011年 / 34卷 / 09期

关键词：

Contact angle; Alcohol aqueous solution; Metal surface; Wetting ability; DROP SHAPE-ANALYSIS; SIZE DEPENDENCE; SOLID-SURFACE; TENSION;

D O I：

10.1002/ceat.201000474

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The contact angles of the aqueous solution of ethanol and that of n-propanol on copper, aluminum, and stainless steel surfaces are reported. The contact angles were measured under atmospheric conditions, and then under vapor-liquid equilibrium conditions at 1 atm and different temperatures. The results showed the variations of the contact angles with the concentrations of aqueous solutions on different metal material surfaces with different roughness. Some unstable behavior of the wetting ability around the azeotropic point of a binary solution is reported. Influences of concentration, kind of materials, and the surface roughness on the wetting ability are discussed. The model for predicting the contact angle of alcohol aqueous solutions on metal surfaces under atmospheric and vapor-liquid two-phase equilibrium conditions at 1 atm is derived from the Young equation.

引用

页码：1535 / 1542

页数：8

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