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Published in: Cellulose 10/2021

27-05-2021 | Original Research

Comparison of cellulose nanocrystal (CNC) filler on chemical, mechanical, and corrosion properties of epoxy-Zn protective coatings for mild steel in 3.5% NaCl solution

Authors: Nur Fatin Silmi Mohd Azani, M. Hazwan Hussin

Published in: Cellulose | Issue 10/2021

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Abstract

This present work evaluated the influence of oil palm frond cellulose nanocrystal (OPF-CNC) as a nanofiller to improve the barrier protection of the epoxy-Zn coating to lessen the corrosion. Herein, the epoxy-Zn coatings loaded with varying ratios of OPF-CNC (0.5–10.0 wt%) were prepared. The ATR analysis revealed the main peaks at 3450 cm−1 and 1030 cm−1 proving the crosslinking network between the epoxy group and the OPF-CNC group. The hardness value of the epoxy-Zn coating was intensified 36% higher than the commercial coating by the inclusion of 0.5 wt% OPF-CNC. The anticorrosion performance of the coatings exposed to 3.5 wt% NaCl were evaluated via electrochemical measurements, salt spray, and AFM analyses. The OCP measurements confirmed that the coated mild steel with 0.5 wt% OPF-CNC is the least susceptible to corrode, offering the highest corrosion protection. Impressively, the coated mild steel managed to remarkably inhibit corrosion in high-temperature conditions at the highest performance (93–99%). The coated mild steel also demonstrated the formation of the least rust and no blistering after the 24-h salt spray test. The improved corrosion resistance was in accordance with AFM analysis, depicted a low surface roughness after a 7-day immersion period.

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Metadata
Title
Comparison of cellulose nanocrystal (CNC) filler on chemical, mechanical, and corrosion properties of epoxy-Zn protective coatings for mild steel in 3.5% NaCl solution
Authors
Nur Fatin Silmi Mohd Azani
M. Hazwan Hussin
Publication date
27-05-2021
Publisher
Springer Netherlands
Published in
Cellulose / Issue 10/2021
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-03910-x

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