Exploring the Effects of Fermented Chitin Nanowhiskers on Tensile and Thermal Properties of Poly(ethylene glycol) modified Polylactic Acid Nanocomposites

Syazeven Effatin Azma Mohd Asri, Zainoha Zakaria, Azman Hassan, Mohamad Haafiz Mohamad Kassim, Reza Arjmandi

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.


Keywords


Chitin; Nanowhiskers; Polylactic acid; Poly(ethylene glycol); Nanocomposites

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DOI: https://doi.org/10.11113/mjfas.v17n2.2002

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Copyright (c) 2021 Syazeven Effatin Azma Mohd Asri, Syazeven Effatin Azma Mohd Asri, Syazeven Effatin Azma Mohd Asri, Zainoha Zakaria, Azman Hassan, Zainoha Zakaria, Zainoha Zakaria, Mohamad Haafiz Mohamad Kassim, Reza Arjmandi, Mohamad Haafiz Mohamad Kassim, Mohamad Haafiz Mohamad Kassim, Reza Arjmandi, Reza Arjmandi

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