Controlling amine receptor group density on aluminum oxide surfaces by mixed silane self assembly

被引：37

作者：

Lee, I ^{[1
]}

Wool, RP ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA

来源：

THIN SOLID FILMS | 2000年 / 379卷 / 1-2期

关键词：

polymer-solid interfaces; -NH2; groups; Al2O3; silanes;

D O I：

10.1016/S0040-6090(00)01557-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To estimate adhesion at polymer-solid interfaces, model substrates with varying -NH2 density on Al2O3 were prepared by a self-assembly of mixed amine terminated silanes (AS) and methyl terminated silanes (MS). The density of -NH2 groups on Al2O3 was varied by changing the mol.% of AS and MS in solution. The model surfaces were characterized by means of X-ray photoelectron spectroscopy (XPS), contact angle measurements, atomic force microscopy (AFM), and mechanical tests with polymers. The analysis of the competitive coadsorption kinetic model showed that MS adsorbed two times faster than AS on aluminum surfaces. The surface energetics of Al2O3 was controlled by the mixed silane treatments from hydrophobic and low energetic to hydrophilic and high energetic surfaces. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：94 / 100

页数：7