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Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma

Biopolymer nanofiller is an approachable reinforcement agent of emerging interest to protect metals against corrosion due to its ability as a renewable, biodegradable and biocompatible polymer resource in the earth. In this study, a series of nanocomposites based on nanocellulose (NC) and nanochitos...

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Main Author: Iling , Aema Wonnie Ma
Format: Thesis
Published: 2017
Subjects:
Q Science (General)
Online Access:http://studentsrepo.um.edu.my/9217/1/Iling_Aema_Wonnie_Ma.pdf
http://studentsrepo.um.edu.my/9217/5/Iling_Aema_Wonnie_Ma_%2D_Dissertation.pdf
http://studentsrepo.um.edu.my/9217/
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spelling my.um.stud.92172020-06-09T17:27:54Z Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma Iling , Aema Wonnie Ma Q Science (General) Biopolymer nanofiller is an approachable reinforcement agent of emerging interest to protect metals against corrosion due to its ability as a renewable, biodegradable and biocompatible polymer resource in the earth. In this study, a series of nanocomposites based on nanocellulose (NC) and nanochitosan (NCH) with an undiluted clear difunctional bisphenol A/epichlorohydrin derived liquid epoxy resin (EP) were prepared and applied on mild steel under room temperature. Furthermore, the composition was cured with isophorone diamine with a constant ratio of 70:30 for all systems. Each system consists of neat epoxy with 1.0 wt.%, 1.5 wt.% and 2.0 wt.% of epoxy/nanocellulose (ENC) nanocomposites and 0.5 wt.%, 1.0 wt.% and 2.0 wt.% of epoxy/nanochitosan (ECH) nanocomposites. The thickness of the dry film was measured by using coating thickness gauge and found to be about 60 ± 5 μm for all systems. Nanofiller and nanocomposite samples were characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM) and Fourier transform infrared (FTIR). The thermophysical properties of the nanocomposites were determined using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Moreover, the transparency of the nanocomposite specimens was examined by UV-vis spectroscopy at a range of 300 - 800 nm. Corrosion protection properties of coated mild steel substrate in 3.5 wt.% NaCl solution was comparatively studied by Electrochemical impedance spectroscopy (EIS) for 30 days. The anticorrosion performance of nanocomposite contains with 1.0 wt.% of NC and 0.5 wt.% of NCH contents revealed the most pronounced anticorrosion performance and also influenced the degradation, thermal stability and transparency of coating film. In accordance with that, all the results showed that the nanocomposite coatings with nanofiller noticeably influenced the epoxy-diamine liquid pre-polymer, both physically and chemically. 2017-08 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/9217/1/Iling_Aema_Wonnie_Ma.pdf application/pdf http://studentsrepo.um.edu.my/9217/5/Iling_Aema_Wonnie_Ma_%2D_Dissertation.pdf Iling , Aema Wonnie Ma (2017) Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/9217/
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Student Repository
url_provider http://studentsrepo.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Iling , Aema Wonnie Ma
Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma
description Biopolymer nanofiller is an approachable reinforcement agent of emerging interest to protect metals against corrosion due to its ability as a renewable, biodegradable and biocompatible polymer resource in the earth. In this study, a series of nanocomposites based on nanocellulose (NC) and nanochitosan (NCH) with an undiluted clear difunctional bisphenol A/epichlorohydrin derived liquid epoxy resin (EP) were prepared and applied on mild steel under room temperature. Furthermore, the composition was cured with isophorone diamine with a constant ratio of 70:30 for all systems. Each system consists of neat epoxy with 1.0 wt.%, 1.5 wt.% and 2.0 wt.% of epoxy/nanocellulose (ENC) nanocomposites and 0.5 wt.%, 1.0 wt.% and 2.0 wt.% of epoxy/nanochitosan (ECH) nanocomposites. The thickness of the dry film was measured by using coating thickness gauge and found to be about 60 ± 5 μm for all systems. Nanofiller and nanocomposite samples were characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM) and Fourier transform infrared (FTIR). The thermophysical properties of the nanocomposites were determined using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Moreover, the transparency of the nanocomposite specimens was examined by UV-vis spectroscopy at a range of 300 - 800 nm. Corrosion protection properties of coated mild steel substrate in 3.5 wt.% NaCl solution was comparatively studied by Electrochemical impedance spectroscopy (EIS) for 30 days. The anticorrosion performance of nanocomposite contains with 1.0 wt.% of NC and 0.5 wt.% of NCH contents revealed the most pronounced anticorrosion performance and also influenced the degradation, thermal stability and transparency of coating film. In accordance with that, all the results showed that the nanocomposite coatings with nanofiller noticeably influenced the epoxy-diamine liquid pre-polymer, both physically and chemically.
format Thesis
author Iling , Aema Wonnie Ma
author_facet Iling , Aema Wonnie Ma
author_sort Iling , Aema Wonnie Ma
title Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma
title_short Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma
title_full Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma
title_fullStr Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma
title_full_unstemmed Development of biodegradable coating by using biopolymer anti corrosive reagent / Iling Aema Wonnie Ma
title_sort development of biodegradable coating by using biopolymer anti corrosive reagent / iling aema wonnie ma
publishDate 2017
url http://studentsrepo.um.edu.my/9217/1/Iling_Aema_Wonnie_Ma.pdf
http://studentsrepo.um.edu.my/9217/5/Iling_Aema_Wonnie_Ma_%2D_Dissertation.pdf
http://studentsrepo.um.edu.my/9217/
_version_ 1738506238742757376
score 13.211869

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