Abstract In this study, the effects of rubberwood extractives on the mechanical properties and fungal decay resistance of rubberwood-based wood plastic composites (WPCs) were explored. Three different solvents, benzene-ethanol, methanol, and deionized water, were used to remove the extractives of the rubberwood flour (RWF). The surface topographies of the prepared rubberwood-based WPC and the rubberwood itself were characterized using digital instruments and scanning electron microscopy (SEM). The results indicate that the mechanical properties of the WPC prepared using extracted RWF were higher than those of the WPC prepared with unextracted RWF. The sequences of resistance to the growth of mold on the surface of the WPC were ranked as follows: deionized-water-extracted WPC > methanol-extracted WPC > benzene-ethanol-extracted WPC > unextracted WPC. The WPC made with extracted RWF had better brown-rot resistance and worse white-rot resistance than the unextracted WPC. These results demonstrate that the removal of rubberwood extractives has a positive effect on the mechanical properties and mold and fungal decay resistance of rubberwood-based WPCs.

中文翻译：

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提取物对橡胶木-HDPE复合材料力学性能和耐久性的影响

摘要 本研究探讨了橡胶木提取物对橡胶木基木塑复合材料（WPCs）的力学性能和抗真菌腐蚀能力的影响。三种不同的溶剂，苯-乙醇、甲醇和去离子水，用于去除橡胶木粉 (RWF) 的提取物。使用数字仪器和扫描电子显微镜 (SEM) 对制备的橡胶木基 WPC 和橡胶木本身的表面形貌进行表征。结果表明，使用提取的 RWF 制备的 WPC 的机械性能高于使用未提取的 RWF 制备的 WPC。木塑表面抗霉菌生长顺序为：去离子水提取木塑>甲醇提取木塑>苯乙醇提取木塑> 未提取的 WPC。用提取的 RWF 制成的 WPC 比未提取的 WPC 具有更好的抗褐腐性和更差的抗白腐性。这些结果表明，橡胶木提取物的去除对橡胶木基 WPC 的机械性能以及抗霉菌和真菌腐烂性具有积极影响。