Tensile strength of wood polylactic acid composite: A meta-analysis
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It is worth mentioning that polylactic acid (PLA) is extracted from plants and it can be considered a renewable resource. Thesustainable development of resources can be achieved by turning PLA and wood production into wood plastic composite(WPC). In this study, the mechanical properties of WPC were compared in a meta-analysis that focused on WPC made withPLA because the tensile strength (TS) of WPC compared with PLA was unclear. We assessed changes in the mechanicalproperties of PLA and wood used to make WPC by identifying 1919 peer-reviewed manuscripts, of which 15 articles wereincluded in this analysis. We found that adding 10%–50% wood flour reduced the TS, breaking elongation, and impactstrength of WPC. This did not affect the bending modulus. More work is required to solve the compatibility issues betweenwood fiber and plastics as well as to better understand the degradability of PLA-WPC. Additionally, the cost reduction forWPC synthesis must be addressed.
Abstract
It is worth mentioning that polylactic acid (PLA) is extracted from plants and it can be considered a renewable resource. Thesustainable development of resources can be achieved by turning PLA and wood production into wood plastic composite(WPC). In this study, the mechanical properties of WPC were compared in a meta-analysis that focused on WPC made withPLA because the tensile strength (TS) of WPC compared with PLA was unclear. We assessed changes in the mechanicalproperties of PLA and wood used to make WPC by identifying 1919 peer-reviewed manuscripts, of which 15 articles wereincluded in this analysis. We found that adding 10%–50% wood flour reduced the TS, breaking elongation, and impactstrength of WPC. This did not affect the bending modulus. More work is required to solve the compatibility issues betweenwood fiber and plastics as well as to better understand the degradability of PLA-WPC. Additionally, the cost reduction forWPC synthesis must be addressed.
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