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Thermal and toughness enhancement of poly (lactic acid) bio-nanocomposites

Abdullah, N. A. S. and Mohamad, Z. and Che Man, S. H. and Baharulrazi, N. and A. Majid, R. and Jusoh, M. and Ngadi, N. (2019) Thermal and toughness enhancement of poly (lactic acid) bio-nanocomposites. Chemical Engineering Transactions, 72 . ISSN 2283-9216

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Official URL: https://dx.doi.org/10.3303/CET1972072

Abstract

Bio-nanocomposites based on poly (lactic acid)/epoxidized natural rubber (PLA/ENR) blends containing graphene (G) nanofiller were prepared by melt compounding using nano-single screw extruder with a screw speed of 60 rpm, and followed by compression molding. The ENR and graphene loading was varied from 0-30 wt% and 0.5-2.0 phr. The objectives of this work are to investigate the effect of ENR and graphene loading on PLA matrix on the thermal, morphology and toughness properties. The TGA curve of PLA/ENR and PLA/ENR/G bio-nanocomposites shows a single step of thermal degradation. As increasing the loading of graphene, degradation temperature (Tdeg) was increase where graphene act to slow down the rate of degradation. The PLA/ENR blends showed a co-continuous morphology while PLA/ENR/G bionanocomposites revealed a good dispersion of graphene in a PLA/ENR matrix at 1 phr of graphene loading. The optimum impact strength was recorded at 10 wt% of the ENR loading which is 104.6 J/m for the PLA/ENR system. In the case of PLA/ENR/G system, the optimum impact strength was recorded at 1 phr of graphene which is 219.5 J/m. The thermal and toughness enhancement of PLA/ENR/G bio-nanocomposites will diversify the future application of this bio-nanocomposites.

Item Type:Article
Uncontrolled Keywords:biodegradable polymer, natural rubber (PLA/ENR) blends
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:89000
Deposited By: Narimah Nawil
Deposited On:26 Jan 2021 16:36
Last Modified:26 Jan 2021 16:36

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