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Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies

Hybrid materials are inimitable conjugates of organic/inorganic structures having synergetic behaviour and extraordinary properties. Therefore, hybrid chitosan/silica composite was synthesized by using sodium tripolyphosphate via ionotropic gelation technique. The obtained intercalation of hybrid ch...

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Main Authors: Wonnie Ma, Iling Aema, Ammar, Sh., Bashir, Shahid, Selvaraj, Manickam, Assiri, Mohammed Ali, Ramesh, Kasi, Ramesh, Subramaniam
Format: Article
Published: Elsevier 2020
Subjects:
QC Physics
QD Chemistry
Online Access:http://eprints.um.edu.my/24751/
https://doi.org/10.1016/j.porgcoat.2020.105679
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spelling my.um.eprints.247512020-06-09T06:26:41Z http://eprints.um.edu.my/24751/ Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies Wonnie Ma, Iling Aema Ammar, Sh. Bashir, Shahid Selvaraj, Manickam Assiri, Mohammed Ali Ramesh, Kasi Ramesh, Subramaniam QC Physics QD Chemistry Hybrid materials are inimitable conjugates of organic/inorganic structures having synergetic behaviour and extraordinary properties. Therefore, hybrid chitosan/silica composite was synthesized by using sodium tripolyphosphate via ionotropic gelation technique. The obtained intercalation of hybrid chitosan/silica composite was characterized using Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) analysis. The surface morphology of the composite was studied through field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The EDX analysis was performed to find the wt.% of the present elements in the composite that showed the increment of O element up to 47.50 wt. % and the presence of Si (27.61 wt. %) revealed that the silica is present within the chitosan matrix, which demonstrates successful hybridization of chitosan/silica. Furthermore, the obtained hybrid chitosan/silica was incorporated within the epoxy matrix and electrochemical studies such as electrochemical impedance spectroscopy (EIS) was employed for 60 days. The experimental results revealed that the presence of hybrid chitosan/silica composite up to 0.8 wt. % resulted in a profound outcome as a considerable active reinforcing agent for corrosion prevention application with the highest coating resistance, (1.97 ± 0.01) × 1011 Ω and lowest breakpoint frequency, 51 × 10-3 Hz after 60 days. © 2020 Elsevier B.V. Elsevier 2020 Article PeerReviewed Wonnie Ma, Iling Aema and Ammar, Sh. and Bashir, Shahid and Selvaraj, Manickam and Assiri, Mohammed Ali and Ramesh, Kasi and Ramesh, Subramaniam (2020) Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies. Progress in Organic Coatings, 145. p. 105679. ISSN 0300-9440 https://doi.org/10.1016/j.porgcoat.2020.105679 doi:10.1016/j.porgcoat.2020.105679
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
QD Chemistry
spellingShingle QC Physics
QD Chemistry
Wonnie Ma, Iling Aema
Ammar, Sh.
Bashir, Shahid
Selvaraj, Manickam
Assiri, Mohammed Ali
Ramesh, Kasi
Ramesh, Subramaniam
Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies
description Hybrid materials are inimitable conjugates of organic/inorganic structures having synergetic behaviour and extraordinary properties. Therefore, hybrid chitosan/silica composite was synthesized by using sodium tripolyphosphate via ionotropic gelation technique. The obtained intercalation of hybrid chitosan/silica composite was characterized using Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) analysis. The surface morphology of the composite was studied through field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The EDX analysis was performed to find the wt.% of the present elements in the composite that showed the increment of O element up to 47.50 wt. % and the presence of Si (27.61 wt. %) revealed that the silica is present within the chitosan matrix, which demonstrates successful hybridization of chitosan/silica. Furthermore, the obtained hybrid chitosan/silica was incorporated within the epoxy matrix and electrochemical studies such as electrochemical impedance spectroscopy (EIS) was employed for 60 days. The experimental results revealed that the presence of hybrid chitosan/silica composite up to 0.8 wt. % resulted in a profound outcome as a considerable active reinforcing agent for corrosion prevention application with the highest coating resistance, (1.97 ± 0.01) × 1011 Ω and lowest breakpoint frequency, 51 × 10-3 Hz after 60 days. © 2020 Elsevier B.V.
format Article
author Wonnie Ma, Iling Aema
Ammar, Sh.
Bashir, Shahid
Selvaraj, Manickam
Assiri, Mohammed Ali
Ramesh, Kasi
Ramesh, Subramaniam
author_facet Wonnie Ma, Iling Aema
Ammar, Sh.
Bashir, Shahid
Selvaraj, Manickam
Assiri, Mohammed Ali
Ramesh, Kasi
Ramesh, Subramaniam
author_sort Wonnie Ma, Iling Aema
title Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies
title_short Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies
title_full Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies
title_fullStr Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies
title_full_unstemmed Preparation of Hybrid Chitosan/Silica Composites Via Ionotropic Gelation and Its Electrochemical Impedance Studies
title_sort preparation of hybrid chitosan/silica composites via ionotropic gelation and its electrochemical impedance studies
publisher Elsevier
publishDate 2020
url http://eprints.um.edu.my/24751/
https://doi.org/10.1016/j.porgcoat.2020.105679
_version_ 1669008014887092224
score 13.211869

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