Chitosan nanocomposite coatings with enhanced corrosion inhibition effects for copper

被引：48

作者：

Bahari, Helma Sadat ^{[1
,2
]}

Ye, Fei ^{[2
]}

Carrillo, Esteban Alejandro Toledo ^{[2
]}

Leliopoulos, Christos ^{[2
]}

Savaloni, Hadi ^{[1
]}

Dutta, Joydeep ^{[2
]}

机构：

[1] Univ Tehran, Coll Sci, Sch Phys, North Kargar St,POB 14395-547, Tehran, Iran

[2] KTH Royal Inst Technol, Sch Engn Sci, Dept Appl Phys, Funct Mat, Hannes Alfvens Vag 12, S-11419 Stockholm, Sweden

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 162卷

关键词：

Chitosan; Nanocomposite; Coatings; Anticorrosion; Copper; PROTECTIVE ORGANIC COATINGS; KRAMERS-KRONIG TRANSFORMS; CROSS-LINKING DENSITY; FTIR/ATR IN-SITU; ELECTROCHEMICAL IMPEDANCE; MECHANICAL-PROPERTIES; ANTICORROSION; NANOPARTICLES; ACID; VALIDATION;

D O I：

10.1016/j.ijbiomac.2020.08.035

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A biopolymer coating on copper was prepared based on chitosan nanocomposite and its corrosion inhibition efficiency was investigated. Inclusion of silica nanoparticles substantially reduces swelling ratio of chitosan coating while enhancing its thermal stability. The corrosion resistance of chitosan-based coatings is improved by introducing 2-mercaptobenzothiazole and silica in the matrix. It is found that upon crosslinking the chitosan coatings, a higher corrosion resistance could be achieved and the highest inhibition efficiency for chitosan nanocomposite coatings is calculated as 85%. The corrosion mechanism is found closely related to mass transition and diffusion process, and also the polarization resistance contributes to the impedance. Calculated impedance using Kramers-Kronig transformation shows good agreement with experimental values, thus validating the impedance measurements. This study exhibits the enhanced efficiency of nanocomposite and potential of chitosan coatings in corrosion prevention for copper. (C) 2020 The Authors. Published by Elsevier B.V.

引用

页码：1566 / 1577

页数：12

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