关键词: 木粉组分, 聚合物, 复合材料, 界面, 性能

Abstract: Wood-plastic composites （WPCs） are usually composed of wood flour （WF） and thermoplastic polymers. Wood contains various components，including cellulose，hemicelluloses and lignin，which pose different influences on the property of the resulting composites. In this paper， recent research is summarized in this area. In general，cellulose can improve the mechanical property，water uptake，and electric conductivity of the composites. However，cellulose is unfavorable to anti-weathering property and thermal stability. Hemicelluloses have negative effects on almost all properties of the composites. Lignin can reduce the water uptake of the composites，thus improving thermal stability and decay resistance while accelerating photo degradation. Removal of extractives can improve the water uptake，mechanical property，thermal stability，and anti-weathering property of the composites，but has negative effect on decay resistance. Therefore，further investigations should be focused on investigating these effects by separating the wood components or partly removing some components from wood，as well as studying the mechanism. This could provide a theoretical basis for preparing higher performance WPCs.

Key words: wood components, polymers, composites, interface, property