Functionalized chitosan-based coatings for active corrosion protection

被引：58

作者：

Carneiro, J. ^{[1
]}

Tedim, J. ^{[1
]}

Fernandes, S. C. M. ^{[2
]}

Freire, C. S. R. ^{[2
]}

Gandini, A. ^{[2
]}

Ferreira, M. G. S. ^{[1
]}

Zheludkevich, M. L. ^{[1
]}

机构：

[1] Univ Aveiro, CICECO, Dept Engn Mat & Ceram, P-3810193 Aveiro, Portugal

[2] Univ Aveiro, CICECO, Dept Quim, P-3810193 Aveiro, Portugal

来源：

SURFACE & COATINGS TECHNOLOGY | 2013年 / 226卷

关键词：

Chitosan; Corrosion inhibitor; Coating; AA2024; INHIBITORS; SURFACES;

D O I：

10.1016/j.surfcoat.2013.03.035

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Chitosan-based coatings were suggested in this work as a "green" alternative for active corrosion protection of aluminum alloys. 2-Mercaptobenzothiazole (MBT) was used here as an efficient corrosion inhibitor for AA2024. The electrochemical impedance spectroscopy has demonstrated a strong inhibiting action of MBT showing no corrosion attack even after one week in full immersion tests when MBT-loaded chitosan coatings are applied. The surface properties of the chitosan coatings were improved by chemical grafting with poly(ethylene-alt-maleic anhydride) (PEMA) and poly(maleic anhydride-alt-1-octadecene) (POMA), aiming at increasing hydrophobicity that is crucial for corrosion protection in atmospheric conditions. The high contact angles, in the range of 140 degrees, were obtained on the MBT-containing chitosan films. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：51 / 59

页数：9

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