Exploring the Mechanical and Viscoelastic Characteristics of Luffa Fiber-Reinforced Vinyl Ester Composites

This study investigates the viscoelastic properties of Luffa/vinyl ester composites, with the aim of elucidating their potential for diverse applications. Luffa fibers derived from sponge gourd plants and integrated into a vinyl ester matrix. The resulting composites were subjected to a comprehensive range of tests to assess their performances. Scanning electron microscopy (SEM) revealed a well-dispersed and interconnected fiber-matrix interface, indicative of good compatibility. Mechanical testing showed notable improvements in the tensile strength by 25%, flexural strength by 18%, and impact strength by 15% compared with the unreinforced matrix. Dynamic Mechanical Analysis (DMA) further revealed enhanced viscoelastic properties, with a 20% increase in storage modulus and a 15% improvement in damping properties. These findings suggest that luffa-fiber-reinforced vinyl ester composites exhibit promising mechanical and viscoelastic characteristics, making them viable candidates for various engineering applications.