Preparation and characterization of pH-controlled-release intelligent corrosion inhibitor

被引:20
作者
Li, Li [1 ]
Dong, Chaofang [1 ]
Liu, Liqin [2 ]
Li, Jiankuan [1 ]
Xiao, Kui [1 ]
Zhang, Dawei [1 ]
Li, Xiaogang [1 ]
机构
[1] Univ Sci & Technol Beijing, Ctr Corros & Protect, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Dept Biol Sci & Engn, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
Polymer preparation; Functional; Corrosion; HYDROGELS; DELIVERY; ACID;
D O I
10.1016/j.matlet.2013.11.003
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A pH-controlled-release intelligent corrosion inhibitor is designed, which performs long-term inhibition capability in the solution. The pH-sensitive hydrogel was prepared via grafting the mixtures of acrylic acid (AA) and 2-hydroxy ethyl methacrylate (HEMA) onto potato starch backbones. Increasing pH generally produced an increased swelling of the hydrogel which peaked at pH 8.0. The hydrogel also showed a fast and reversible swelling behavior when alternately immersed in pH 1.0 and 8.0 solutions. A corrosion inhibitor, 1 H-Benzotriazole (BTA), was loaded into the hydrogels and the cumulative release capabilities were studied at different pH. From the electrochemical measurement and scanning electron microscopy (SEM) analysis, the intelligent corrosion inhibitor exhibited an improved long-term inhibition ability on aluminum alloy due to the controlled-release behaviors. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:318 / 321
页数:4
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