Biodegradable PLA/HEC-ZNO Nanocomposite for corrosion protection of ASTM A36 steel: A combined quantum and electrochemical analysis

Johny W. Soedarsono; Andoko Andoko; Kuncoro Diharjo; Femiana Gapsari; Sanjay Mavinkere Rangappa; Suchart Siengchin

Case Studies in Chemical and Environmental Engineering (Jun 2025)

Biodegradable PLA/HEC-ZNO Nanocomposite for corrosion protection of ASTM A36 steel: A combined quantum and electrochemical analysis

Johny W. Soedarsono,
Andoko Andoko,
Kuncoro Diharjo,
Femiana Gapsari,
Sanjay Mavinkere Rangappa,
Suchart Siengchin

Affiliations

Johny W. Soedarsono: Department of Metallurgy and Materials, Faculty of Engineering, Universitas Indonesia, Depok, 16424, Indonesia; Corresponding author.
Andoko Andoko: Department of Mechanical Engineering, Faculty of Engineering, State University of Malang, Semarang 5, Malang, 65145, Indonesia
Kuncoro Diharjo: Department of Mechanical Engineering, Faculty of Engineering, Sebelas Maret University, Ir. Sutami 36, Surakarta, 57126, Indonesia
Femiana Gapsari: Department of Mechanical Engineering, Faculty of Engineering, Brawijaya University, MT Haryono 167, Malang, 65145, Indonesia; Corresponding author.
Sanjay Mavinkere Rangappa: Department of Mechanical Engineering, Faculty of Engineering, Brawijaya University, MT Haryono 167, Malang, 65145, Indonesia; Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok (KMUTNB), Bangkok, Thailand
Suchart Siengchin: Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok (KMUTNB), Bangkok, Thailand

Journal volume & issue: Vol. 11
p. 101039

Abstract

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The corrosion of ASTM A36 steel in acidic environments poses a critical industrial issue, prompting the need for sustainable inhibitors. This study develops a biodegradable PLA/HEC nanocomposite enhanced with ZnO nanoparticles as an inhibitor. Its performance was evaluated using quantum analysis and electrochemical tests, including Tafel polarization and EIS. Quantum analysis showed ZnO enhances electron donation and acceptance for corrosion protection, while electrochemical findings showed PLA/HEC nanocomposite with 0.05 wt% ZnO achieved 93.98 % inhibition efficiency. PLA/HEC-ZnO nanocomposite has potential for sustainable corrosion protection in steel infrastructure, with future exploration focusing on long-term performance, economic feasibility, and practical application testing. This eco-friendly approach integrates quantum and electrochemical insights to optimize corrosion protection.

Published in Case Studies in Chemical and Environmental Engineering

ISSN: 2666-0164 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Engineering (General). Civil engineering (General): Environmental engineering; Technology: Chemical technology: Chemical engineering
Website: https://www.journals.elsevier.com/case-studies-in-chemical-and-environmental-engineering

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