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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 bamboo fiber / polylactic acid composite material was controlled by the methods of alkali treatment (NaOH), isocyanate (MDI) and NaOH + MDI treatment respectively. The results showed that the NaOH treatment could further refine the bamboo fiber, increase the specific surface area, and realize the physical regulation of the bamboo fiber / polylactic acid composite interface. The chemical control of the interface of the composite material can be achieved by the MDI treatment. The three interface control methods can be improved The mechanical properties of bamboo fiber / polylactic acid composite were the best, while the control effect of NaOH + MDI interface was the best. The tensile strength and impact strength of the composites increased by 36.9% and 36.5% respectively.