Physical, mechanical and morphological properties of recycled polypropylene (PP) reinforced with coconut fiber

Mohd Latip, Muhamad Ariffadzilah (2022) Physical, mechanical and morphological properties of recycled polypropylene (PP) reinforced with coconut fiber. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Polypropylene is a biodegradable thermoplastic polymer that is used in a wide number of applications. Due to the short shelf life of polypropylene-based packaging, the great majority of these thermoplastics end up in landfills as waste. Polypropylene goods degrade slowly in landfills, requiring between twenty and thirty years to completely degrade. This characteristic contributes significantly to environmental problems. Additionally, conventional filament materials for 3D printing are not recyclable. The fundamental objective of this research is to create a new biodegradable filament for 3D printing. The specific objective is to develop a filament material from a novel blend of recycled polypropylene and coconut fiber. To characterize the physical, thermal, and rheological properties of reinforced composites made of recycled polypropylene and coconut fiber. Although the Coconut Fiber was delivered in small pieces, it would through numerous processes before being sieved to 125 microns. Even if the Recycled Polypropylene is already in resin/pellet form, this process must be carried out to ensure that no foreign particles interfere with the compounding process. Polypropylene recycled has emerged in the form of resins. However, before beginning the mixing procedure, the resins must be washed and dried to ensure that they are clean and in good condition. Alkali (NaOH) was used to improve the tensile and flexural properties of coconut fiber while decreasing its impact strength. The alkali solution concentration utilized to treat the fiber varied between 0.5 and 28%, but the majority of researches used less than 10% alkali solution. 20–180°C and 15–48 hours are the temperatures and times used to treat the natural fiber in the solution, respectively. Weighing coconut fiber and recycled polypropylene will determine their fiber content. The extrusion process will be assisted by a double extruder machine. Both materials will be placed into the hopper of this machine. Several experiments have been conducted to determine the mechanical, physical, and morphological properties of coconut fiber filaments. Tensile testing, SEM analysis, and absorption testing were all performed. The data collected during the test have been recorded and analyzed.

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