Abstract
In this article, Grewia Optiva fiber (GOF) has been reinforced with epoxy and hybrid (epoxy-Lannea Coromandelica gum) resins. The biocomposite has been fabricated with 5, 10, and 15 weight% of continuous and discontinuous GOFs. The effect of fiber surface treatment has been examined on the mechanical properties of GOF. Additionally, the mechanical properties along with physicochemical, morphological, and thermal characterization have been determined for GOF reinforced composites. The results have revealed that GOF treated with 5% NaOH has shown superior tensile strength. Also, the increase in fiber content has increased the water absorption, and it has been maximum for 15 wt% GOF reinforced hybrid resin composites. Further, the stress-strain behaviors under tensile and flexural load have confirmed that 15 wt% continuous GOF reinforcement with epoxy resin has shown maximum tensile strength and flexural strength. In Charpy impact test, 15 wt% GOF reinforcement with hybrid resin has shown the best results compared to their counterparts. The spectroscopy has confirmed the interaction between resins and GOF. The morphological analysis has confirmed the porous structure and inter-connected open cavities with unique hollow and multiscale structures of GOF. The fractured surface of composites under tensile and flexural loading has confirmed the fiber-matrix debonding, fiber breaking, and microcracking. Also, no gaps or pull outs confirming the good interfacial adhesion between fiber and matrix. The thermal analyses have shown the low thermal stability of composites and the lower values of glass transition temperature for composites in comparison to pure resins. Further, this work can expose a fresh way to implement locally accessible eco-friendly natural fiber and resins to produce high-performance biocomposites. The utilization of agricultural by-product as a sustainable green composite can resolve the problem of disposal of these materials and maintain an eco-friendly environment. These composites could be suitable for buildings, automotive parts, sound barriers, marine parts, etc.
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First author thanks the Ministry of Education (MOE), Government of India for giving Ph.D. fellowship.
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Kalauni, K., Pawar, S.J. Physicochemical, mechanical, morphological, and thermal characterization of Grewia Optiva fiber reinforced epoxy and hybrid (epoxy-Lannea Coromandelica gum) resins composite. J Polym Res 30, 202 (2023). https://doi.org/10.1007/s10965-023-03583-z
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DOI: https://doi.org/10.1007/s10965-023-03583-z