Improving the interfacial compatibility of plant fibers and polymer matrices still is an ongoing challenge in the application of natural fiber/polymer composites. In this study, the graphene oxide (GO) was grafted onto alkali‐treated bamboo fiber (ABF) surfaces, and then a GO‐ABF/polypropylene (PP) composite was prepared using a mini‐injection molding technique. The chemical properties of the GO‐ABF surface, as well as the mechanical properties of the GO‐ABF/PP composite, were studied systematically. The results showed that the GO sheets were successfully grafted on the surface of ABF, and the hydrogen bond interaction occurred between the GO and the ABF. Compared with the untreated bamboo fiber (UBF)/PP composite, the tensile strength and flexural strength of the 0.1GO‐ABF/PP composite were increased by 12.6% and 23.7%, respectively, due to the enhancement of the interfacial binding force between GO‐ABF and the PP matrix. These results indicate that GO possesses great potential for improving the mechanical properties of GO‐ABF/PP composite. It can provide a reference basis for the feasibility of using GO in the natural fiber/polymer composites.

中文翻译：

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改善石墨烯氧化物改性的竹纤维增强聚丙烯复合材料的机械性能

在天然纤维/聚合物复合材料的应用中，改善植物纤维和聚合物基质的界面相容性仍然是持续的挑战。在这项研究中，将氧化石墨烯（GO）接枝到经过碱处理的竹纤维（ABF）表面上，然后使用微注射成型技术制备GO-ABF /聚丙烯（PP）复合材料。系统地研究了GO‐ABF表面的化学性能以及GO‐ABF / PP复合材料的机械性能。结果表明，GO片材成功地接枝到了ABF的表面，并且GO与ABF之间发生了氢键相互作用。与未处理的竹纤维（UBF）/ PP复合材料相比，0.1GO-ABF / PP复合材料的拉伸强度和弯曲强度分别提高了12.6％和23.7％。由于GO‐ABF与PP基质之间的界面结合力增强。这些结果表明，GO具有改善GO-ABF / PP复合材料力学性能的巨大潜力。它可以为在天然纤维/聚合物复合材料中使用GO的可行性提供参考依据。