Influence of Maleic Anhydride Grafted Polypropylene on the Interfacial Compatibility of Wood Flour/Poly(β-Hydroxybutyrate Valerate) Composites

Authors

  • Rui Jiang Yunnan Provincial Branch of China National Tobacco Corporation, Yunnan 650000, China
  • Yuanfei Xu Yunnan Provincial Branch of China National Tobacco Corporation, Yunnan 650000, China
  • Xuejian Yang Dali Tobacco Company of Yunnan Province, Yunnan 671000, China
  • Lizhi Zhu State Key Laboratory of Bio-based Fiber Materials, Tianjin University of Science & Technology, Tianjin 300457, China; Institute of Carbon Neutrality, Tianjin University of Science & Technology, Tianjin 300222, China
  • Lei Zhang Yunnan Provincial Branch of China National Tobacco Corporation, Yunnan 650000, China
  • Zhenyu Fan Yunnan Provincial Branch of China National Tobacco Corporation, Yunnan 650000, China
  • Xiaoyan Guo Yunnan Provincial Branch of China National Tobacco Corporation, Yunnan 650000, China
  • Binqing Sun State Key Laboratory of Bio-based Fiber Materials, Tianjin University of Science & Technology, Tianjin 300457, China; Institute of Carbon Neutrality, Tianjin University of Science & Technology, Tianjin 300222, China

Keywords:

Wood-plastic composites (WPCs), Interfacial compatibility, Wood flour (WF), Poly(β-hydroxybutyrate valerate) (PHBV)

Abstract

Maleic anhydride grafted polypropylene (MAPP) was utilized as a coupling agent to prepare composites of Populus tomentosa wood flour (WF) and poly (β-hydroxybutyrate valerate) (PHBV) through the hot-pressing process. The impacts of this coupling agent on the interfacial compatibility and physical-mechanical properties of WF/PHBV composites (WPHBVs) were analyzed and discussed by making use of scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA). The results indicated that after adding MAPP, a grafting reaction would occur. This reaction improved the interfacial compatibility between Populus tomentosa WF, and PHBV boosted the thermal stability of WPHBVs. When the addition amount of MAPP was 2%, the flexural strength and elastic modulus of WPHBVs reached their maximum levels, up to 27.99 MPa and 3690.47 MPa, respectively, and the strength enhancements were all above 40%. At this stage, the cross-section of the WPHBVs exhibited a smooth surface with no visible gaps. Tight interfacial bonding between phases indicated the highest level of compatibility between Populus tomentosa WF and PHBV.

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Published

2026-06-04

How to Cite

Jiang, R., Xu, Y., Yang, X., Zhu, L., Zhang, L., Fan, Z., … Sun, B. (2026). Influence of Maleic Anhydride Grafted Polypropylene on the Interfacial Compatibility of Wood Flour/Poly(β-Hydroxybutyrate Valerate) Composites. BioResources, 21(3), 6665–6678. Retrieved from https://ojs.bioresources.com/index.php/BRJ/article/view/24831

Issue

Vol. 21 No. 3 (2026)

Section

Research Article or Brief Communication