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Biosynthesis of thin film derived from microbial chitosan for piezoelectric application

Amran, Anisah and Ahmad, Farah B. and Maziati Akmal, Mohd Hatta and Md Ralib @ Md Raghib, Aliza Aini and Suhaimi, Muhammad Irsyad (2021) Biosynthesis of thin film derived from microbial chitosan for piezoelectric application. Materials Today Communications, 29. pp. 1-11. ISSN 2352-4928

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Abstract

The aim of this paper was to synthesize and characterize microbial chitosan thin films for potential piezoelectric application. Microbial chitosan was derived from the Aspergillus oryzae fungus via extraction and deacetylation. Chitosan thin film was characterized for its surface morphology, chemical properties, tensile strength, and surface topography. For the potential application of chitosan as a piezoelectric material, its piezoelectric char-acteristics were presented in terms of its electromechanical coupling coefficient and piezoelectric coefficient. The fabrication of the chitosan thin films was optimized via the one-factor-at-a-time (OFAT) method, where the parameters were type of acid solvent, acid concentration and mixing time. The chitosan film prepared using formic acid at a concentration of 0.25 M for 3 h of mixing time had the highest tensile strength (129.29 MPa), electromechanical coupling factor (0.0045), and piezoelectric coefficient d31 (10 pC/N). The results obtained, from the optimized fabrication of the chitosan thin film, were validated against fungal chitosan, and it was shown that the properties of the thin film were comparable to those of commercial PVDF thin films. Therefore, the prospect of using microbial chitosan thin film as wearable piezoelectric energy harvester or nano-generator is promising.

Item Type: Article (Journal)
Additional Information: 7967/93731
Uncontrolled Keywords: Aspergillus oryzae Chitosan Deacetylation Fungi Piezoelectric Thin film
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TP Chemical technology
T Technology > TP Chemical technology > TP1080 Polymers, plastics and their manufacture
T Technology > TP Chemical technology > TP155 Chemical engineering
T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User: Dr Farah Binti Ahmad
Date Deposited: 15 Nov 2021 14:38
Last Modified: 15 Nov 2021 14:38
URI: http://irep.iium.edu.my/id/eprint/93731

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