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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44696

Assessment of Anticorrosive Coatings with Multicore Microcapsules and Polyaniline Nanoparticles: A Novel Synergistic Approach

U. B. Gawai, P. S. Shisode, C. B. Patil

Abstract

The present investigation reports, successful preparation of polyaniline (PANI) nanoparticles and its improved corrosion resistance with addition of multicore microcapsules. The multicore microcapsules were synthesized by in-situ polymerization method, with oil in water emulsion technique separately and blends of Tung oil and Dehydrated Castor oil (20 % and 30 % DCO) were entrapped in urea formaldehyde (UF) micro containers. The surface morphology of prepared microcapsules was analysed initially by digital optical microscope and then with Scanning Electron Microscopy (SEM). The particle size of synthesized microcapsules was determined by particle size analyser. The core content of the microcapsules was determined by extraction process using Soxhlet apparatus. The synthesized microcapsules were then incorporated into epoxy coating to verify their self-healing properties. The improved corrosion resistance of PANI nanoparticles was then checked by incorporating them along with the synthesized microcapsules combinations into epoxy coating matrix. Corrosion protection of coated panels were analysed by immersion in 3.5 % NaCl and 0.5 M HCl solution and studied in comparison with pristine epoxy coated panels.

Keywords

Microencapsulation, Tung Oil and Dehydrated Castor Oil blend, Polyaniline nanoparticles, Anticorrosive coatings.

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