Functional anti-corrosive and anti-bacterial surface coatings based on cuprous oxide/polyaniline microcomposites. (April 2022)

• Record Type: Journal Article
• Authors: Zhao, Yunyan; Tian, Songwei; Lin, Danling; Zhang, Zhonghua; Li, Guicun
• Is Part Of: Materials & design. Volume 216(2022)
• Publication Date: 2022-04
• Subjects: Cuprous oxide -- Polyaniline -- Anti-corrosion -- Bacteriostasis -- Coating; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2022.110589
• Languages: English
• ISSNs: 0264-1275

Abstract

Graphical abstract: Highlights: The dual-functional coating material of cuprous oxide/polyaniline core–shell structure was constructed through the oxidation–reduction method. The core–shell structure facilitates the formation of contact passivation layer on carbon steel base. The bacteria can be accurately anchored, shortening the function routes of Cu 2+ and improving the bacteriostasis rate. Abstract: Complex processes and mismatches of anti-corrosive undercoats and anti-fouling (anti-bacterial) topcoats have serious effects on the production efficiencies and performances of coatings for marine installations. This study reports a rare dual-function coating of antimicrobial effect and anti-corrosion performance. The coating was prepared by adding cuprous oxide/polyaniline (Cu2 O/PANI) composite to acrylic resin. Cu2 O/PANI core–shell structure was constructed through the oxidation–reduction method. According to the different weight percentages of Cu2 O in Cu2 O/PANI (0%, 35%, 46%, and 100%), the performance and protection mechanism of Cu2 O/PANI composites were researched. Cu2 O/PANI-2 (weight percentages of Cu2 O was 35%) displays an excellent anti-corrosive effect, due to the improved dispersibility of PANI in coating and the enlarged area of effective contact between the PANI and Fe-based metal. And the superior antimicrobial property of Cu2 O/PANI-2 is responsible for the better adsorbability towards bacteria, which can be accurately anchored and shortens the function routes of Cu 2+ . Considering the anti-corrosive and antibacterial applications, the developed Cu2 O/PANI-2 has a far-reaching influence on marine development.