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Electrosprayed PLGA smart containers for active anti-corrosion coating on magnesium alloy Amlite
journal contribution
posted on 2014-01-01, 00:00 authored by Jingyu Chen, X B Chen, Jingliang LiJingliang Li, Bin TangBin Tang, N Birbilis, Xungai WangA novel self-healing system, consisting of poly(lactic-co-glycolic) acid (PLGA) porous particles loaded with a corrosion inhibitor, i.e. benzotriazole (BTA), has been successfully achieved via direct electro-spray deposition and subsequent epoxy spraying upon magnesium (Mg) alloy AMlite. The two-step process greatly simplified the multi-step fabrication of smart coatings reported previously. The PLGA particles demonstrate rapid response to both water and pH increase incurred by corrosion of Mg, ensuring instant and ongoing release of BTA to self-heal the protective functionality and retard further corrosion. Furthermore, nanopores in the PLGA–BTA microparticles, formed by the fast evaporation of dichloromethane during the electrospray process, also contribute to the fast release of BTA. Using Mg alloy AMlite as a model substrate which requires corrosion protection, potentiodynamic polarisation characterisation and scratch testing were adopted to reveal the anti-corrosion capability of the active coating.
History
Journal
Journal of materials chemistry AVolume
2Issue
16Pagination
5738 - 5743Publisher
Royal Society of ChemistryLocation
London, Eng.Publisher DOI
ISSN
2050-7496Language
engPublication classification
C1 Refereed article in a scholarly journal; C Journal articleCopyright notice
2014, Royal Society of ChemistryUsage metrics
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