MECHANICAL AND THERMAL RESPONSES OF POLYESTER COMPOSITES REINFORCED WITH DIFFERENT BANANA FIBERS ORIENTATIONS DEVELOPED FOR INDUSTRIAL APPLICATIONS

Abstract

This study investigates the mechanical and thermal responses of polyester composites reinforced with different banana fibers orientations developed for industrial applications. The composites were fabricated and tested for tensile, flexural, and impact properties, as well as thermal conductivity and heat deflection temperature. Results show that composites prepared with banana fiber rope vertical mat (BFRVM) orientation exhibited superior tensile strength (51.9 MPa), flexural strength (261 MPa), and impact strength (22.3 KJ/m²) compared to other banana fiber forms and several other natural and synthetic fiber-reinforced composites. The Barcol hardness of BFRVM composites was the highest among the tested composites, indicating robust bonding and enhanced material rigidity. Thermal analysis showed reduced thermal conductivity and improved heat resistance. SEM analysis confirmed strong fiber–matrix adhesion. The results demonstrate that BFRVM composites are viable ecofriendly alternatives to glass fiber composites for industrial applications.