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Title: Natural rubber-based mechanical modifiers for poly (lactic acid)
Authors: Pranee Phinyocheep
Keywords: Impact modifier;Natural rubber;Poly (lactic acid);Sustainable development
Issue Date: 2020
Publisher: The Association of Researchers of Thailand
Citation: Tessanan W, Phinyocheep P. Natural rubber-based mechanical modifiers for poly (lactic acid). International Journal of Science and Innovative Technology 2020;3(2):86-94.
Abstract: Poly (lactic acid) (PLA), a compostable and biodegradable polymer, is a high-brittle polymeric material. Therefore, mechanical property improvement of the PLA is challenging by utilization of natural rubber (NR), a green elastomeric and renewable materials. In this study, NR and chemically modified NR to epoxidized NR (ENR) are explored as impact modifiers for the PLA. The as-prepared ENR with 30 mol% epoxide content (E30NR) and NR are melt-blended with PLA at various rubber contents (1 to 5 wt.%). The result illustrates the concurrent increment in elongation ability and impact performance of PLA, approximately elevenfold and twofold, respectively, with adding 5 wt.% E30NR compared with those of NR/PLA blends with the same rubber content. In addition, the 5 wt.% E30NR is an efficient impact modifier for PLA as the elongation at break and the impact strength is increased approximately fifteen and four times, respectively, compared to the PLA. The E30NR/PLA blends launch superior modulus and strength when compared to NR/PLA blends. Furthermore, E30NR/PLA films transparency demonstrat-ed from transmittance percentage shows higher transparency than NR/PLA blend films. Consequently, NR-based utilization as a mechanical modifier could be considered a sustainable and alternative way for the value-added of NR and increment of PLA’s applications.
ISSN: 2630-0532
Appears in Collections:COE: National Journal Publications
Chemistry: National Journal Publications

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