Enhanced mechanical and thermal properties of green PP composites reinforced with bio-hybrid fibers and agro-waste fillers

IF 23.2 2区 材料科学 Q1 MATERIALS SCIENCE, COMPOSITES
Thanh Mai Nguyen Tran, Prabhakar M.N., Dong-Woo Lee, Jung-il Song
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Abstract

The present work discusses the mechanical and thermal properties of novel green hybrid composites manufactured from a polypropylene (PP) matrix, reinforced by bio-hybrid fibers-short woven flax fiber (SWF) and short basalt fiber (BF)-and agro-waste fillers, such as rice husk powder (RHP). Interfacial bonding was enhanced by a coupling agent, such as maleic anhydride grafted polypropylene (MAPP). These hybrid composites were prepared using the twin-screw extrusion and injection molding process. Extensive tests were conducted to study the effects of reinforcement and MAPP on tensile strength, flexural strength, tensile modulus, flexural modulus, and dynamic mechanical properties. The obtained results showed a large improvement in mechanical properties: tensile strength improved up to 57.68% (from 35.82 to 56.48 MPa), flexural strength improved up to 52.59% (from 58.08 to 88.65 MPa), the value of tensile modulus improved up to 147% (from 2.00 to 4.94 GPa), and flexural modulus improved up to 86.04% from 2.65 to 4.93 GPa—in comparison to a plain 25% SWF/PP composite. DMA represented that the storage modulus increased by 129% from 2159.69 to 4938.20 MPa, while tan delta values reduced by 15%, signifying enhanced stiffness in concert with a reduction in molecular mobility. Thermal analysis exhibited enhanced thermal stability as char residue was increased from 1.82 to 16.81% at 700 °C in the optimum composites containing RHP and MAPP. These morphological and structural characteristics were characterized by using techniques from FTIR and 3D-OM to SEM–EDS; indeed, the enhanced interfacial bonding and homogeneous distribution of reinforcement were verified with MAPP assistance. The findings of this study demonstrate the potential of these green composites for high-performance applications in the automotive and construction industries.

生物杂化纤维和农业废弃物填料增强绿色PP复合材料的力学和热性能
本文讨论了以聚丙烯(PP)为基体,以短编织亚麻纤维(SWF)和短玄武岩纤维(BF)为增强纤维,以稻壳粉(RHP)等农业废弃物为填料制备的新型绿色杂化复合材料的力学和热性能。偶联剂如马来酸酐接枝聚丙烯(MAPP)增强了界面键合。采用双螺杆挤压和注射成型工艺制备了复合材料。进行了大量的试验,研究了增强筋和MAPP对拉伸强度、弯曲强度、拉伸模量、弯曲模量和动态力学性能的影响。结果表明:与普通25% SWF/PP复合材料相比,拉伸强度提高57.68%(从35.82提高到56.48 MPa),抗弯强度提高52.59%(从58.08提高到88.65 MPa),拉伸模量提高147%(从2.00提高到4.94 GPa),抗弯模量提高86.04%(从2.65提高到4.93 GPa)。DMA表示,存储模量从2159.69增加到4938.20 MPa,增加了129%,而tan δ值减少了15%,表明刚度增强与分子迁移率降低相一致。热分析表明,含RHP和MAPP的最佳复合材料在700℃时炭渣从1.82%提高到16.81%,热稳定性得到增强。利用FTIR、3D-OM、SEM-EDS等技术对这些形貌和结构特征进行了表征;事实上,在MAPP辅助下,增强的界面结合和均匀的增强分布得到了验证。这项研究的结果证明了这些绿色复合材料在汽车和建筑行业的高性能应用的潜力。
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来源期刊
CiteScore
26.00
自引率
21.40%
发文量
185
期刊介绍: Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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