The influence of MAPP coupling agent on 3D printing filament made of wood fiber and recycled polypropylene composites

Ismanor Aizal, Nur Yasminn Amira (2024) The influence of MAPP coupling agent on 3D printing filament made of wood fiber and recycled polypropylene composites. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

The goal of this research was to investigate the effect of MAPP as a compatibilizer on the surface morphology, mechanical, and physical properties of 3D printing filament made from wood fiber and recycled polypropylene (r-WoPPc). The r-WoPPc filaments with MAPP loadings of 0%, 1%, 3%, and 5% by weight were produced using twin screw extruder and then printed using 3D printing. The printed specimens were tested for tensile and flexural. Morphological of r-WoPPc filament and the 3D-printed tensile fracture surface was examined. Additionally, investigations were conducted on the water absorption, soil burial degradation of r-WoPPc. The results revealed that 5% MAPP addition in r-WoPPc yielded the highest tensile and flexural strength which improved by 110.27% and 89.12% compared to without MAPP. The MAPP strengthened the adhesion between wood fiber and recycled PP matrix, resulting in improved r-WoPPc performance. Better adhesion between wood fiber and PP can be observed from the filament surface morphology of 5% r-WoPPc which wood fiber is adequately adhered to the matrix PP. Additionally, the morphology of the tensile fracture surface shown an even fracture for the specimen with 5% MAPP while the specimens with 0%, 1% and 3% MAPP showed uneven fracture. The enhanced properties of r-WoPPc resulted from MAPP’s maleic anhydride functions esterify wood fiber surface hydroxyls. The water absorption results also shows that 5% MAPP adhesion has the lowest percentage of water absorbed for 42.1%. The soil burial result has proven that with the presence of 5% MAPP in the composite makes the soil burial degradation of filament with the highest weight loss of 8.06%.

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