Physical, mechanical and morphological properties of recycled polypropylene(PP) reinforced with wood dust filament

Razali, Muhammad Zulqarnain Amin (2022) Physical, mechanical and morphological properties of recycled polypropylene(PP) reinforced with wood dust filament. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

In recent years, the usage of natural fibre composites has gained significant interest due to their low density, high availability, and low cost. Due to the environment factor which is to reduce waste which can affect the ecosystem, for example, the plastic waste which take a long time to decompose were recycled to produce a material that can be reused. An investigation into the development of sustainable natural fibre filaments based on wood dust and recycled polypropylene and the effect of fibre weight ratio on thermal, mechanical, and morphological properties of natural fibre filaments are being conducted in this study. The abilities of combination between wood dust and recycled polypropylene as new composite material will be evaluated whether it is suitable to be used in the 3D printing field as a composite filament. Different ratios were used in this study which is 0%, 1%,3% and 5%. The wood dust fibre also will be treated using 6% sodium hydroxide (NaOH) and the soaking time was 2 hours to enhance the compatibility of the fibre and matrix. Both of material was analyse using TGA to analyse the degradation of wood fibre and recycled polypropylene by monitoring weight changes. The melting point and melt flow rate were analyse using Differential scanning calorimetry (DSC) analysis for fabrication process purpose. By using twin screw extruder machine, both of material were mixed and extruded to produce 3D printing filaments. A few tests have been done to study the mechanical characteristic which by using tensile test to measure the tensile strength of the filaments. Physical characteristic of the filaments was measure using water absorption method where the weight, length and diameter of the filaments were measured and the physical change of the filament after soaked for 48 hours has been recorded. The last test that has been analyse was on the morphological analysis where the filament cross section was observe using SEM. The data that were obtained from the test has been recorded and analysed.

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