Influence of Fiber Hybridization on the Mechanical Behavior of Kenaf–Sisal Epoxy Composites

The natural composites are widely preferred nowadays in versatile application due to easily degradable and moderate mechanical properties when compare to polymer matrix composites. The kenaf fiber are used as reinforcement in composites wherever high flexural strength and modulus is required whereas sisal fiber is preferred for tensile strength, impact and wear resistance. In our work hybrid composite comprising kenaf and sisal as reinforcement and epoxy as matrix is fabricated and its mechanical properties are explored and compared with the conventional composite fabricated using only kenaf or sisal as reinforcement. The hybrid composite shows excellent flexural strength but inferior tensile strength when compare to conventional composite. The failure of the specimens are investigated using scanning electron microscopy (SEM). In this chapter detailed insight is presented for emphasizing the need for tailored fiber selection and processing to achieve optimal mechanical properties.