期刊
MATERIALS TODAY-PROCEEDINGS
卷 47, 期 -, 页码 3537-3545出版社
ELSEVIER
DOI: 10.1016/j.matpr.2021.03.544
关键词
Poly (lactic acid); Polybutylene succinate; Natural fillers; Lemongrass powder; Biocomposite film
资金
- Department of Chemistry, Faculty of Science, Naresuan University
- Development and Promotion of Science and Technology Talents Project (DPST)
- Science Lab Center
This research developed biocomposite films based on PLA, PBS, and lemongrass powder to study the influences of PBS and LE on the physical and mechanical properties. The addition of PBS increased the tensile strength and %elongation of biocomposite films, while increasing the amount of LE decreased these properties. The color of the biocomposite films with lemongrass powder showed a yellow-green shade, and the UV-light resistance properties improved with the addition of LE.
The purpose of this research was to develop biocomposite films based on Poly (lactic acid); PLA, Polybutylene succinate; PBS and lemongrass powder; LE as a natural filler by twin-screw extruder and blow film extruder. The aim was to study the influences of LE and PBS on the physical and mechanical properties of biocomposite films. This work varied the weight percentage of PBS at 0, 10, and 20 wt% and varied the content of LE at 0, 2.5, 5.0, 7.5, and 10 wt%. The biocomposite films were characterized for physical properties (Color parameter and %UV transmittance), chemical properties (Fourier Transform Infrared Spectroscopy; FT-IR), mechanical properties (Tensile test), aging test at room temperature, and field testing. The mechanical properties of biocomposite films showed the addition of PBS into the PLA matrix increased the tensile strength and %elongation of biocomposite films by similar to 2-7 MPa and 1-2%, respectively. However, when increasing the amount of LE, the tensile strength and %elongation decreased. The color of the biocomposite films with the lemongrass powder gives a yellow-green shade, while Delta E of biocomposite film increases with a higher content of LE. The addition of LE improved the UV-light resistance properties of biocomposite film which is beneficial as a low %UV transmittance is important to prevent weeds growth. The %UV transmission of biocomposite films was reduced with increasing percentage of LE. Moreover, the biocomposite films after aging found that the color parameter and %UV transmittance only degraded less than 5%. This work, therefore, can be applied to agricultural products such as mulch film, while being biodegradable which could significantly reduce the agriculture plastic waste. (C) 2021 Elsevier Ltd. All rights reserved.
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