Grafting of Maleic Anhydride onto Co)propylene-b-ethylene( by Extrusion Process: Measurement of Adhesion to Steel Surface

H. Khabbazi,; R. Bagheri,; And M.A Golozar,

Grafting of Maleic Anhydride onto Co)propylene-b-ethylene( by Extrusion Process: Measurement of Adhesion to Steel Surface

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Abstract

Polypropylene (PP) has poor adhesion to metals and other surfaces for its chemical structure. Hence, chemical modification of PP is necessary for metal surface coating application. In this research, grafting of maleic anhydride (MA) onto co(propylene-b-ethylene) in the presence of a dicumyl peroxide (DCP) was accomplished in a single screw extruder. Characteristics of the modified polymer were determined by Infra-red Spectroscopy (IR), Scanning Electron Microscopy (SEM), and adhesion test. Maximum grafting of MA was found to be 1.2832% for 1.5 pph of MA. Adhesion test showed that the samples containing 1 pph of MA (degree of grafting is 0.5816%) had better adhesion to steel surface (17.25 kgf).

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