Effect of Alkali Treatment of Alstonia macrophylla (AS) fiber on Dynamic Mechanical and Machinability Properties of Polypropylene (PP) Composites reinforced with Unidirectional AS fiber

Dynamic mechanical analysis (DMA) and drilling performance of the polypropylene (PP) composites reinforced with different volume fractions (0, 10, 20, 30, 40 50 vol.%) untreated alkali treated novel Alstonia macrophylla (AS) fiber were investigated. DMA reports showed that vol.% loaded PP imparted good thermomechanical properties in terms storage modulus (E’), loss (E”) a remarkable 366% 331% improvement than virgin laminates respectively. In addition, study also disclosed that, exhibited higher owing to strong interfacial bonding matrix as result treatment. Drilling was performed investigate effect chemical treatment drill parameters viz., point angle (90°, 118°, 130°) feed rate (20, 40, 60 mm/min) on machinability property PP/AS composites. outcomes conveyed slight resistance strength which played vital role resisting thrust force. Field emission scanning electron microscopy (FESEM) used capture images drilled surface understand morphology composite.