Publication: A circular economy use of waste wood sawdust for wood plastic composite production: effect of bio-plasticiser on the toughness
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Issued Date
2020
Resource Type
File Type
application/pdf
ISSN
19397038
Other identifier(s)
2-s2.0-85075125168
Rights Holder(s)
Scopus
Bibliographic Citation
International Journal of Sustainable Engineering. Vol 13, No.5 (2020), p.398-410
Suggested Citation
Petchwattana N., Naknaen P., Narupai B. A circular economy use of waste wood sawdust for wood plastic composite production: effect of bio-plasticiser on the toughness. International Journal of Sustainable Engineering. Vol 13, No.5 (2020), p.398-410. doi:10.1080/19397038.2019.1688422 Retrieved from: https://hdl.handle.net/20.500.14740/4409
Author(s)
Abstract
This research aims to improve the toughness of Poly(lactic acid) (PLA)/wood sawdust (WS) composite by plasticising with tributyrin bio-plasticiser. Experimental results showed the toughness achievement of the plasticised PLA/WS composite, which reflected as the increase of the tensile strain at break and impact resistance. Thermal test indicated that the plasticised composites crystallised earlier than neat PLA and PLA/WS at lower crystallisation temperature (Tc) together with the increased degree of crystallinity (Xc). Thermal degradation test revealed that PLA/WS composite were less stable with the plasticiser incorporation, while the heat distortion temperature (HDT) was found to reduce from more than 85°C, in PLA/WS composite, down to less than 60°C when tributyrin was added at 15 wt%. Dynamic mechanical analysis (DMA) indicated that with increasing the tributyrin plasticiser content, the storage modulus (E’) was proportionally decreased. Thermogravimetric analysis (TGA) showed that the plasticised PLA/WS composite decomposed earlier than neat PLA and PLA/WS composite due to the decomposition of low molecular weight compositions. Fourier transform infrared (FT-IR) analysis indicated there was no chemical interaction among the raw materials added. The plasticised composites were found to absorb lower amount of water due to the incorporation of non-polar plasticiser. © 2019 Informa UK Limited, trading as Taylor & Francis Group.