Preparation And Characterization Of PP/rPP Blends At Different Formulation Ratio By Injection Moulding Process

Azhar, Muhammad Aiman (2019) Preparation And Characterization Of PP/rPP Blends At Different Formulation Ratio By Injection Moulding Process. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Variation in the formulation ratio of polymer blend for two difference polymeric phases may produce a new resulted properties and compatibility condition of the blend. A good blend that generated better characteristic would assist in various engineering applications. In this research, the scrap material produced from injection moulding operation is recycled for development of polymer blend. The recycling process will be a supportive method in conserving the environment and natural resources by reducing the usage of hydrocarbon. Yet, there are not enough research been made on the recycling of polypropylene (PP) waste to be blended with virgin PP. Thus, this study has been done to characterize and optimize the PP/rPP blends from the injection moulding scrap. The aim is to replace and reduce the utilization of virgin PP for some applications that consume high operation cost. The PP/rPP blends are prepared by crushing both PP and rPP materials and mixed in the injection moulding machine during the sample preparation process at their respective formulation ratio. Different ratio of PP/rPP (100/0 wt. %, 75/25 wt. %, 50/50 wt. %, 25/75 wt. %, 0/100 wt. %) are used to investigate the effects of materials phases towards the resulted mechanical, thermal and physical properties of PP/rPP blends. Mechanical properties and physical properties was tested for all the samples. There are also thermal testing was performed which are Differential Scanning Calorimetry (DSC) to determine the maximum thermal properties and the thermal stability of the specimen. Scanning Electron Microscope observation also was done to observe the fracture surface morphology of the sample. At the end of this study, it was found that the blend with ratio 50:50 of PP/rPP was significantly possessed outstanding mechanical and physical characteristic in terms of tensile, elongation at break and impact strength as well as improvement in their thermal properties as proven by DSC analysis. As a conclusion, all the objectives are achieved and the result produced can be used for further improvement and research that may solve the excessive usage of waste problem.

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