Effect of Compatibilizer on the Properties of Areca-Fiber Reinforced Polypropylene Composites

Areca fiber reinforced polypropylene (PP) composites were prepared at 20%, 30%, 40%, and 50% loading levels in the presence of compatibilizing agent, MAPP (maleic anhydride grafted polypropylene). The influence of compatibilizing agent and filler concentration on the mechanical properties of the resulting composites was studied. At 50% areca fiber loading, tensile, flexural strength, and modulus of the coupled samples were found to be superior when compared to the uncoupled samples. Coupled composites exhibited effective coupling/interfacial adhesion between the surface of areca fiber and polypropylene phase as evidenced by SEM microphotographs and FTIR spectroscopy. Increase in fiber percentage led to an increase in brittleness and stiffness of composites. A considerable increase in strength was noticed upon the addition of compatibilizing agent, due to proper incorporation of areca fiber into the polypropylene matrix and the efficient transfer of load from matrix to the fiber. Higher moisture absorption in case of composites with higher fiber content was found. Addition of MAPP reduces the percentage of water absorption as a result of encapsulation of areca fiber. Areca fiber can be effectively utilized to develop artificial wood with better properties to replace natural wood as a waste-to-wealth approach.

Automated summary

This study investigates the influence of a compatibilizing agent and filler concentration on the mechanical properties of areca fiber reinforced polypropylene composites. The addition of a compatibilizing agent results in improved tensile, flexural strength, and modulus at high fiber loading levels. Microscopic analysis confirms the effective coupling/interfacial adhesion between the fiber surface and polypropylene phase. Higher fiber content leads to increased brittleness and stiffness, while the addition of the compatibilizing agent enhances strength and reduces water absorption.