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首页> 外文期刊>Journal of Thermoplastic Composite Materials >Banana fiber-reinforced polypropylene nanocomposites: Effect of fiber treatment on mechanical, thermal, and dynamic-mechanical properties
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Banana fiber-reinforced polypropylene nanocomposites: Effect of fiber treatment on mechanical, thermal, and dynamic-mechanical properties

机译：香蕉纤维增强聚丙烯纳米复合材料：纤维处理对机械，热和动态机械性能的影响

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Banana fiber-reinforced nanocomposites were fabricated by melt mixing in a twin-screw extruder followed by compression molding in this study. Maleic anhydride polypropylene copolymer (MA-g-PP) was used as a compatibilizer to increase the compatibility between the PP matrix, clay, and banana fiber to enhance exfoliation of organoclay and dispersion of fibers into the polymer matrix. Variation in mechanical, thermal, and physico-mechanical properties with the addition of banana fiber into the PP nanocomposites was investigated. It was observed that presence 3wt% of nanoclay and 5wt% MA-g-PP within PP matrix results in an increase in tensile and flexural strengths by 41.3%, and 45.6%, respectively, compared with virgin PP due to the high aspect ratio of clay stacks in the fully exfoliated nanocomposites. Further, incorporation of 30wt% banana fiber in PP nanocomposites system increases the tensile and flexural strengths to the tune of 27.1%, and 15.8%, respectively. The morphology of fiber-reinforced PP nanocomposites has been examined using scanning and transmission electron microscopies. Significant enhancement in thermal stability of nanocomposites was also observed due to the presence of nanoclay under thermogravimetric analysis. Dynamic mechanical analysis tests revealed an increase in storage modulus (￡') and damping factor (tan S), conforming the strong interacction between nanoclay/banana fiber and MA-g-PP in the-reinforcde nanocomposites systems.
机译：香蕉纤维增强纳米复合材料是通过在双螺杆挤出机中熔融混合，然后进行压模成型而制成的。马来酸酐聚丙烯共聚物（MA-g-PP）被用作增容剂，以增加PP基体，粘土和香蕉纤维之间的相容性，从而增强有机粘土的剥落和纤维向聚合物基体中的分散。研究了在PP纳米复合材料中添加香蕉纤维后机械，热和物理机械性能的变化。观察到，与聚丙烯相比，PP基体中纳米粘土的含量为3wt％，MA-g-PP的含量为5wt％，与原始PP相比，其拉伸强度和弯曲强度分别提高了41.3％和45.6％，这是由于高纵横比的缘故。完全剥落的纳米复合材料中的粘土叠层。此外，在PP纳米复合材料体系中掺入30wt％的香蕉纤维可分别将拉伸强度和弯曲强度提高到27.1％和15.8％。纤维增强的PP纳米复合材料的形态已使用扫描和透射电子显微镜检查。由于在热重分析下存在纳米粘土，还观察到了纳米复合材料热稳定性的显着提高。动态力学分析测试表明，储能模量（￡'）和阻尼系数（tan S）有所增加，这符合纳米粘土/香蕉纤维与增强型纳米复合材料系统中MA-g-PP的强相互作用。

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