Antibacterial, mechanical and thermal properties of PVA/Starch composite film reinforced with Cellulose Nanofiber of Sugarcane Bagasse

Asem, Maimunah and Jimat, Dzun Noraini and Wan Nawawi, Wan Mohd Fazli and Sulaiman, Sarina (2021) Antibacterial, mechanical and thermal properties of PVA/Starch composite film reinforced with Cellulose Nanofiber of Sugarcane Bagasse. Arabian Journal for Science and Engineering. ISSN 2193-567X

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Abstract

PVA/starch nanocomposite film reinforced with cellulose nanofiber (CNF) of sugarcane bagasse was developed in this study as other option of existing biodegradable plastics packaging. Polyvinyl alcohol (PVA) is selected in this study as it is the only synthetic polymer that is able to degrade and exhibit excellent film forming properties. This nanocomposite film was prepared via solution casting method. Cellulose nanofiber (CNF) was extracted from sugarcane bagasse (SCB) via alkaline and mild acid treatment assisted with ultrasonication. The cellulose nanofiber suspension was added into PVA/starch film with different loadings from 1 to 6wt% to determine the optimum loading that would give the best result of mechanical, thermal and antibacterial properties. The thermal properties, tensile strength and elongation at break of PVA/starch/cellulose nanofiber showed improvement when the CNF of SCB loading was 4wt%. Reinforcement of cellulose nanofiber to PVA/starch film caused a great enhancement of the tensile strength (85 MPa) which was 254% improvement. Antibacterial properties of this composite film PVA/starch/CNF incorporated with lemongrass essential oil gave inhibition towards gram positive bacteria S. aureus. This study can be an initial step towards development of active food packaging with improved properties of biodegradable film.

Item Type:	Article (Journal)
Uncontrolled Keywords:	PVA/starch/cellulose nanofiber, Composite film, Mechanical, Thermal, Antimicrobial properties
Subjects:	T Technology > TP Chemical technology > TP1080 Polymers, plastics and their manufacture 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 Dzun Noraini Jimat
Date Deposited:	12 Aug 2021 09:11
Last Modified:	12 Aug 2021 09:11
URI:	http://irep.iium.edu.my/id/eprint/91322

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