Study of carbon black generated from pyrolysis of passenger tyres added with pvoh

Kam, Weng Joe (2020) Study of carbon black generated from pyrolysis of passenger tyres added with pvoh. Final Year Project, UTAR.

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Abstract

Polyvinyl alcohol (PVOH) is a biodegradable and biocompatibility types of biopolymer which can be applied extensively in biomedical fields. However, it is high in cost, lower strength and stiffness when compared with other types of biopolymer. In order to solve these problems, adding reinforcing filler into the PVOH has been extensively attracted the concern of researches. Carbon black (CB) is one of the reinforcing filler which can be used to improve the mechanical properties of PVOH. Furthermore, the carbon black can be obtained through pyrolysis of waste tyres which can enhance the PVOHs’ properties. Hence, this work was conducted to investigate the effect of polyvinyl alcohol added with carbon black in terms of mechanical properties, surface morphologies and chemical bonding. The PVOH/CB composites were prepared by using the casting method with 100 phr of PVOH added with different loading level of carbon black particles. The increasing of carbon black up to 10 phr of PVOH/CB composites has increased the tensile strength and Young’s modulus of the composite. Conversely, further increment of carbon black up to 30 phr has decreased the mechanical properties. The surface morphologies were observed to have more tearing effect, presence of cavity and higher wavy effect at high loading level of 30 phr of carbon black. Furthermore, the chemical bonding interaction analysis indicated that wavenumber of both O-H and C-H stretching had decreased as the loading level of carbon black increased. The O-H stretching was found to be decreased at higher amount of carbon black (>10 phr) due to the agglomeration effect of carbon black particles, which alter the interaction and bonding between PVOH and CB.

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