Synthesis and Characterization of<i>Grewia Optiva</i>Fiber-reinforced PF-based Composites

Abstract

Abstract In this article, the synthesis of natural fiber-reinforced phenol-formaldehyde (PF) resin matrix-based polymer composites has been reported. Initially the phenol-formaldehyde resin was prepared by varying the concentration of formaldehyde with a fixed weight of phenol. Polymeric resins of different P:F ratios were subjected for optimization of their mechanical properties. The sample ratio of 1:1.5 (P:F) was found to possess maximum mechanical strength. Then reinforcing of this optimized resin was done by taking different ratios of Grewia optiva fiber in particle form (200 μ) to prepare green polymer composites. The polymer composite materials thus prepared were subjected for evaluation of their mechanical properties such as tensile, compressive, flexural, and wear resistance. It has been observed that optimum mechanical properties were obtained for fiber loading of 30%. Further, the mechanical strength of the composites has been found to be higher than the parent phenol-formaldehyde resin matrix. The morphological and thermal properties of the composites have also been studied. Keywords: mechanical propertiesmorphological and thermal behaviornatural fiberspolymer composites We express our sincere thanks to Director, National Institute of Technology Hamirpur (H.P.) India for providing the basic laboratory facilities. Financial assistance from University Grant Commission (New Delhi) provided through Grant No. F.NO. 30-80/2004 (SR) is acknowledged.