Physical And Mechanical Properties Of Corn Starch Blended With Polypropylene For Future Automotive Interior Parts

Latuwo, Rahman (2019) Physical And Mechanical Properties Of Corn Starch Blended With Polypropylene For Future Automotive Interior Parts. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Biodegradable that originated from renewable natural resources are currently being paid attention and focused as alternative to synthetic polymer. Therefore, numerous effort has been exerted to develop a natural polymer plastic. Among the natural polymer, starch is one of the interests. Starch inherently biodegradable that can be degraded by others living microorganisms. Unfortunately, there are some solid confinements for applications and creating starch-based polymer because of the absence of a water obstruction property and poor mechanical properties since starch is inherently brittle caused by high intermolecular forces. A variety of corn-starch/polypropylene (PP) compounds with different corn-starch content to improve their mechanical properties were processed by compression using motorise hydraulic moulding test press. The purpose of this study was to obtain the best and appropriate concentration of the corn-starch and PP on mechanical properties. Investigation on their characteristics and mechanical properties were done using universal testing machine instron-8872, durometer test, and electronic densimeter respectively. The addition of corn-starch content to PP reduced the tensile strength and the elongation, but the Young’s modulus or stiffness of material increased. The presence of high starch content adversy affected the tensile strength of corn-starch/PP blends. However, the density increases with the addition of corn-starch on PP. For the shore hardness, it was found that the PP with 10 wt.% corn-starch content had the highest hardness.

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