Developments in anticorrosive organic coatings modulated by nano/microcontainers with porous matrices

Inime I. Udoh*, Okpo O. Ekerenam, Enobong F. Daniel, Alexander I. Ikeuba, Demian I. Njoku, Sharafadeen K. Kolawole, Ini-Ibehe N. Etim, Wilfred Emori, Chigoziri N. Njoku, Iniobong P. Etim, Paul C. Uzoma

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The durability and functionality of many metallic structures are seriously threatened by corrosion, which makes the development of anticorrosive coatings imperative. This state-of-the-art survey explores the recent developments in the field of anticorrosive organic coatings modulated by innovations involving nano/microcontainers with porous matrices. The integration of these cutting-edge delivery systems seeks to improve the protective properties of coatings by enabling controlled release, extended durability, targeted application of corrosion inhibitors, and can be co-constructed to achieve defect filling by polymeric materials. The major highlight of this review is an in-depth analysis of the functionalities provided by porous nano/microcontainers in the active protection and self-healing of anticorrosive coatings, including their performance evaluation. In one case, after 20 days of immersion in 0.1 M NaCl, a scratched coating containing mesoporous silica nanoparticles loaded with an inhibitor benzotriazole and shelled with polydopamine (MSNs-BTA@PDA) exhibited coating restoration indicated by a sustained corrosion resistance rise over an extended period monitored by impedance values at 0.01 Hz frequency, rising from 8.3 × 104 to 7.0 × 105 Ω cm2, a trend assigned to active protection by the release of inhibitors and self-healing capabilities. Additionally, some functions related to anti-fouling and heat preservation by nano/microcontainers are highlighted. Based on the literature survey, some desirable properties, current challenges, and prospects of anticorrosive coatings doped with nano/microcontainers have been summarized. The knowledge gained from this survey will shape future research directions and applications in a variety of industrial areas, in addition to advancing smart corrosion prevention technology.
Original languageEnglish
Article number103209
JournalAdvances in Colloid and Interface Science
Volume330
Number of pages28
ISSN0001-8686
DOIs
Publication statusPublished - 2024

Keywords

  • Active protection
  • Anticorrosive coating
  • Nano/microcontainers
  • Porous matrices
  • Self-healing
  • Smart coating

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