Synthesis and anticorrosive properties of polymer-clay nanocomposites via chemical grafting of polyaniline onto Zn-Al layered double hydroxides

被引：38

作者：

Hu, Jinlong ^{[1
]}

Gan, Mengyu ^{[1
]}

Ma, Li ^{[1
]}

Li, Zhitao ^{[1
]}

Yan, Jun ^{[1
]}

Zhang, Jun ^{[1
]}

机构：

[1] Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2014年 / 240卷

关键词：

Layered double hydroxide; Polyaniline; Nanocomposites; Decavanadate; Protection against corrosion; POLYURETHANE NANOCOMPOSITES; STRUCTURAL-CHARACTERIZATION; CORROSION PROTECTION; COATING SYSTEMS; ALUMINUM-ALLOY; MILD-STEEL; HYDROTALCITE; PERFORMANCE; INHIBITION; RESISTANCE;

D O I：

10.1016/j.surfcoat.2013.12.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The polymer-clay nanocomposites (PANI/AD-LDH) were prepared by chemical grafting based on polyaniline (PANI) and corrosion inhibitor (decavanadate)-intercalated and gamma-aminopropyltriethoxysilane (APTS)-modified Zn-Al layered double hydroxide (AD-LDH). The chemical grafting of PANI onto decavanadate-intercalated LDH (D-LDH) was confirmed by Fourier transformation infrared (FTIR) spectroscopy. The interlayer and surface changes of the clay in the prepared nanocomposite materials and the grafted nanoparticles were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The corrosion resistance behavior of PANI/AD-LDH/epoxy coating was investigated by open circuit potential (OCP), potentiodynamic polarization and electrochemical impendence spectroscopy (EIS) techniques in 3.5% NaCl solution and also compared with that of PANI and D-LDH. The results indicated that the PANI/AD-LDH coating offered better protection against corrosion than the PANI and D-LDH coating did. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.

引用

页码：55 / 62

页数：8

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