Exploring the effects of fermented chitin nanowhiskers on tensile and thermal properties of poly(ethylene glycol) modified polylactic acid nanocomposites

Abstract

The incorporation of fermented chitin nanowhiskers (FCHW) into poly(lactic acid) (PLA) increased the tensile modulus and strength of PLA at the expense of ductility. The brittleness of PLA can be overcome with the use of plasticizer such as polyethylene glycols (PEG). The objective of this study is to investigate the effect of FCHW on the tensile and thermal properties PLA incorporated with PEG as plasticizer (PLA/PEG). PLA/PEG and FCHW reinforced PLA/PEG nanocomposites were prepared using solution mixing technique. Thermogravimetric analysis (TGA) was used to determine the thermal properties while tensile properties were determined from the tensile test. The incorporation of PEG successfully increased the ductility and tensile strength of PLA at the expense of modulus. Based on the tensile properties, 5 phr PEG was chosen for further investigation on the effect of FCHW on PEG modified PLA. Incorporation of 1 phr FCHW PLA/PEG increased the tensile strength and Young's modulus. However, the tensile strength decreased with further addition of FCHW. The elongation at break of PLA/PEG decreased drastically with the incorporation of 1 phr FCHW and decreased gradually with further increase of FCHW. The thermal stability from TGA of FCHW reinforced PLA/PEG nanocomposites at 5 phr FCHW content was observed to be significantly higher compared to PLA/PEG, as indicated by T20 and Tmax.

Publication DOI: https://doi.org/10.11113/mjfas.v17n2.2002
Divisions: College of Engineering & Physical Sciences > Chemical Engineering & Applied Chemistry
Additional Information: ©Copyright Asri et al. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits unrestricted use and redistribution provided that the original author and source are credited. Funding: The author would like to thank Universiti Teknologi Malaysia (UTM) for the research facilities and Ministry of Higher Education Malaysia for financial support through FRGS Grant 4F377.
Uncontrolled Keywords: Chitin,Nanocomposites,Nanowhiskers,Poly(ethylene glycol),Polylactic acid,Mathematics(all),Physics and Astronomy(all),Biochemistry, Genetics and Molecular Biology(all),Agricultural and Biological Sciences(all),Chemistry(all)
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://mjfas.u ... ticle/view/2002 (Publisher URL)
PURE Output Type: Article
Published Date: 2021-04-01
Accepted Date: 2021-03-04
Authors: Syazeven Effatin Azma Mohd Asri, Effatin Azma Mohd Asri
Zakaria, Zainoha
Hassan, Azman
Kassim, Mohamad Haafiz Mohamad
Arjmandi, Reza (ORCID Profile 0000-0003-3891-0678)

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