Articles
  • Tensile strength of wood polylactic acid composite: A meta-analysis

  • Lei Lva,*, Zhenhua Guob,#,* and Hongdi Wanga

  • aWood Science Research Institute of Heilongjiang Academy of Forestry, No. 134 Haping Road, Harbin 150080, P. R. China
    bHeilongjiang Academy of Agricultural Sciences, Animal Husbandry Research Institute, Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, No. 368 Xuefu Road, Harbin 150086, P. R. China

Abstract

It is worth mentioning that polylactic acid (PLA) is extracted from plants and it can be considered a renewable resource. The sustainable 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 with PLA because the tensile strength (TS) of WPC compared with PLA was unclear. We assessed changes in the mechanical properties of PLA and wood used to make WPC by identifying 1919 peer-reviewed manuscripts, of which 15 articles were included in this analysis. We found that adding 10%–50% wood flour reduced the TS, breaking elongation, and impact strength of WPC. This did not affect the bending modulus. More work is required to solve the compatibility issues between wood fiber and plastics as well as to better understand the degradability of PLA-WPC. Additionally, the cost reduction for WPC synthesis must be addressed.


Keywords: Meta-analysis, Polylactic acid, Tensile strength, Wood, Wood plastic composite

This Article

  • 2020; 21(5): 586-591

    Published on Oct 31, 2020

  • 10.36410/jcpr.2020.21.5.586
  • Received on May 6, 2020
  • Revised on May 8, 2020
  • Accepted on Jun 10, 2020

Correspondence to

  • Lei Lv a, Zhenhua Guo b

  • aWood Science Research Institute of Heilongjiang Academy of Forestry, No. 134 Haping Road, Harbin 150080, P. R. China
    bHeilongjiang Academy of Agricultural Sciences, Animal Husbandry Research Institute, Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, No. 368 Xuefu Road, Harbin 150086, P. R. China
    Tel/Fax : +86-451-86602341 (Lei Lv) +86-

  • E-mail: 68122836@qq.com, guozhenhua@iahhaas.com; gzhh00@16