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首页> 外文期刊>Polymer Composites >Mechanical, Thermal and Dynamic-Mechanical Behavior of Banana Fiber Reinforced Polypropylene Nanocomposites
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Mechanical, Thermal and Dynamic-Mechanical Behavior of Banana Fiber Reinforced Polypropylene Nanocomposites

机译：香蕉纤维增强聚丙烯纳米复合材料的力学，热力学和动态力学行为

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Natural fiber-reinforced nanocomposites based on polypropyleneanoclay/banana fibers were fabricated by melt mixing in a twin-screw extruder followed by compression molding in this current 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 3 wt% of nanoclay and 5 wt% of MA-g-PP within PP matrix resulted in an increase in tensile and flexural strength by 41.3% and 45.6% as compared with virgin PP. Further, incorporation of 30 wt% banana fiber in PP nanocomposites system increases the tensile and flexural strength to the tune of 27.1% and 15.8%, respectively. The morphology of fiber reinforced PP nanocomposites has been examined by using scanning electron microscopy and transmission electron microscopy. Significant enhancement in the 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 (E') and damping factor (tan δ), conforming the strong interaction between nanoclay/banana fiber and MA-g-PP in the fiber-reinforced nanocomposites systems.
机译：在当前的研究中，通过在双螺杆挤出机中熔融混合然后压缩成型来制造基于聚丙烯/纳米粘土/香蕉纤维的天然纤维增强纳米复合材料。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，与纯PP相比，PP基质内3wt％的纳米粘土和5wt％的MA-g-PP导致拉伸和弯曲强度分别提高了41.3％和45.6％。此外，在PP纳米复合材料系统中掺入30 wt％的香蕉纤维可分别将拉伸强度和弯曲强度分别提高27.1％和15.8％。纤维增强PP纳米复合材料的形态已通过扫描电子显微镜和透射电子显微镜进行了检查。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（E'）和阻尼系数（tanδ）有所增加，这与纤维增强纳米复合材料系统中纳米粘土/香蕉纤维与MA-g-PP之间的强相互作用相符。

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