Abstract
With the key benefits of low specific weight, superior toughness, lower moisture absorption, recyclability, and economic concerns, natural fiber-embedded polypropylene composites are the trend for auto bumpers and panel applications during the processing of natural fiber with poly matrix facing the consequences of limited composite performance due to inherent adhesive quality. The aim of the present study is synthesizing polypropylene (PP) composite embedded with high-concentration sodium hydroxide (10% NaOH) processed hemp fiber via compression moulding and its specific behaviour featuring the adaptations of 5wt% Mullite (Al4Si4O10) ceramic particles. Finally, the synthesized polypropylene composite is accomplished with 5, 10, 15, and 20wt% of chemically processed hemp fiber featured by constant wt% of Al4Si4O10. For understanding composite structure, the synthesized composites are involved in phase identification analysis via X-ray diffraction route, and their physical behaviour, including tensile, impact, & flexural strength and thermal behaviour, is evaluated by The American Society for Testing and Materials policy. XRD analysis confirms NaOH-treated HF/Al4Si4O10 presence in the PP matrix. The PP/20wt% NaOH-treated hemp fiber/5wt% Al4Si4O10 has excellent tensile (46 ± 1.2 MPa), impact (15 ± 0.5 kJ/m2) & flexural strength (67 ± 1.5 MPa), and better thermal stability with 15% of reduced thermal loss, This is a significant improvement compared to unreinforced PP. The optimum behaviour of PP/20wt% NaOH-treated hemp fiber/5wt% Al4Si4O10 recommended for automotive applications (seat frame and top roof).
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Acknowledgements
The authors would like to acknowledge the Researchers Supporting Project number (RSP2024R373), King Saud University, Riyadh, Saudi Arabia. The work was supported by Tenaga Nasional Berhad (TNB) and Universiti Tenaga Nasional (UNITEN) through the BOLD Refresh postdoctoral fellowships under grant J510050002-IC-6 BOLDREFRESH2025-center of excellence.
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All authors contributed to the study's conception and design. Material preparation, data collection and analysis were performed by M. Aruna, Ismail Hossain, S. Kaliappan, S. Prabagaran, R. Venkatesh, P. Prabhu, Manzoore Elahi M. Soudagar, V. Mohanavel, and A.H. Seikh. The first draft of the manuscript was written by [R. Venkatesh] and all authors provided language help, writing assistance and proofreading of the manuscript. All authors read and approved the final manuscript.
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This is an observational study. High concentration NaOH processing of natural fiber explored polypropylene composite featured with mullite: Characteristics investigation, Research Ethics Committee has confirmed that no ethical approval is required.
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Aruna, M., Hossain, I., Kaliappan, S. et al. High concentration NaOH processing of natural fiber explored polypropylene composite featured with mullite: characteristics investigation. J Polym Res 31, 104 (2024). https://doi.org/10.1007/s10965-024-03953-1
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DOI: https://doi.org/10.1007/s10965-024-03953-1