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Open Access Compatibilization effect of EVA-g-MAH on mechanical, morphological and rheological properties of recycled PC/ABS blend

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Blend of recycled polycarbonate/acrylonitrile butadiene styrene (R-PC/ABS), with virgin polycarbonate (VPC) and ethyl vinayl acetate grafted maleic anhydride (EVA-g-MAH) were prepared via melt blending techniques. Ethyl vinayl acetate (EVA) terpolymer grafted with maleic anhydride (MAH) to get EVA-g-MAH. Fourier Transform Infrared Spectroscopy (FTIR) spectra shows two new absorbance peaks at 1779 and 1851 cm–1, which correspond to symmetrical and asymmetrical stretching virbrations of MAH carbonyl (C = O) group and the grafting ratio was calculated through chemical titration method. The R-PC/ABS blend properties was upgradated by the addition of 30 wt% VPC and 10 wt% EVA-g-MAH exhibited optimum impact performance to about 183.5 J/m, which is 48.1% higher than the R-PC/ABS blend. Dynamic mechnical analysis (DMA) and rheological results indicated that R-PC/ABS was partially miscible with VPC and EVA-g-MAH was an efficient reactive compatibilizer for R-PC/ABS blends. The morphology of prepared blend has been examined by using scanning electron micrscopy (SEM) and force modulation microscopy (FMM).

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Keywords: EVA-G-MAH; FMM; PC/ABS; RHEOLOGY; SEM

Document Type: Research Article

Publication date: December 1, 2014

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