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European Journal of Wood and Wood Products

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13-04-2022 | Original Article

Mechanical, thermal and rheological properties of polylactic acid (PLA)/epichlorohydrin modified pine wood flour (EWF) composites

Authors: Zhouyao Yue, Huashan Wang, Mingxiu Zhang, Meiyi Wang

Published in: European Journal of Wood and Wood Products | Issue 5/2022

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Abstract

Polylactic acid (PLA)/epichlorohydrin modified pinewood flour (EWF) composites were prepared with the pinewood flour modified with epichlorohydrin (EWF) by extrusion. The effects of epichlorohydrin modified pinewood flour (EWF) on the mechanical, thermal and rheological properties of the composites were investigated systemically. The results show that the tensile and impact properties of the biocomposite were increased with the increment in EWF content added in polylactic acid (PLA). The maximum tensile strength of the composites is 52.8 MPa when the content of EWF is 20%, 13 MPa higher than that of pure PLA. In addition, the maximum elongation at break is 23.2%, which is 3.5 times higher than that of pure PLA. The suitable proportion of EWF can significantly enhance the heterogeneous nucleation efficiency and crystallization rate, and improve the crystallinity. The addition of epichlorohydrin modified pine wood flour (EWF) could increase both the storage modulus and loss modulus of the composite resulting from the increased molecular entanglement and crosslinking. The PLA/EWF composite has better comprehensive properties.

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Title: Mechanical, thermal and rheological properties of polylactic acid (PLA)/epichlorohydrin modified pine wood flour (EWF) composites
Authors: Zhouyao Yue
Huashan Wang
Mingxiu Zhang
Meiyi Wang
Publication date: 13-04-2022
Publisher: Springer Berlin Heidelberg
Published in: European Journal of Wood and Wood Products / Issue 5/2022
Print ISSN: 0018-3768
Electronic ISSN: 1436-736X
DOI: https://doi.org/10.1007/s00107-022-01810-w

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