分别采用碱（NaOH）处理、异氰酸酯（MDI）处理以及NaOH＋MDI处理的界面调控方法对竹纤维/聚乳酸复合材料界面进行调控。结果表明,NaOH处理可以进一步细化竹纤维,增加比表面积,实现对竹纤维/聚乳酸复合材料界面的物理调控;MDI处理能够实现对复合材料界面的化学调控;三种界面调控方法均可以改善竹纤维/聚乳酸复合材料的力学性能,而NaOH＋MDI界面调控效果最佳,调控处理后复合材料拉伸强度和冲击强度分别增加了36.9%和36.5%。
The interface of the bamboo fibers/polylactic acid was controlled by alkali（NaOH） treatment,isocyanate（MDI） treatment and NaOH＋MDI treatment,respectively.The results show that the NaOH treatment could further refine bamboo fibers and increase specific surface area,realizing the physical control of bamboo fibers/polylactic acid composites interface;MDI treatment could realize the chemical control of bamboo fibers/polylactic acid composites interface.All of the three kinds of the interface control methods could improve the mechanical properties of bamboo fibers/polylactic acid composites,among which NaOH＋MDI treatment has the best positive effects on the interface properties of the composites,the tensile strength and impact strength of the bamboofibers/polylactic acid composites with interface control are increased 36.9% and 36.5%,respectively.
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