Mechanical Properties of Biodegradable Mulch Films Contained Poly(Lactic Acid) and Modified Natural Rubber Prepared by Blown Film Extrusion

Abstract:

The present research aimed to develop biodegradable mulch films that could resolve the environmental problem in agriculture. The research also compared the properties of transparent and black commercial mulch films. Blended films were prepared by blown-film extrusion, heating at 170 °C, and rotation at 55 rpm. The results revealed that the appearance of FTIR spectra were shown as functional groups of PBAT, described at 1710 cm-1 and 1267 cm-1, which corresponds to carbonyl groups in ester linkage and C-O in ester linkage, respectively. The presence of O-H carboxylic acids, attributed within the range 910-950 cm-1. The films containing 10% PLA loading showed peaks from 937 to 1712 cm-1, more than films containing 20% PLA loading. The carbon black contained in the biodegradable film could interrupt the mobility of the polymer chain, leading to decreased Tm, while the incorporation of carbon black in biodegradable mulch films could increase the tensile properties of blends.

• Periodical: Applied Mechanics and Materials (Volume 873)
• Pages: 117-122
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.873.117
• Online since: November 2017
• Authors: Tarinee Nampitch*, Thiti Kaisone, Pran Hanthanon, Chanon Wiphanurat, Sumate Ouipanich, Yupawan Thongjun
• Keywords: Epoxidized Natural Rubber (ENR), Mulch Films, Poly(butylene adipate-co-terephthalate), Poly(lactic acid)

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