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Effect of a thermoplastic elastomer compatibilizer (sebs-g-mah) on the properties of PP/PET blends

AutorDebbah, I.; Krache, R.; Belkouissem, K.; Benachour, D.; Cagiao, M. E.
Fecha de publicaciónene-2018
EditorEditura Academiei Române
CitaciónRevue Roumaine de Chimie 63: 11-20 (2018)
ResumenPolyethylene terephthalate (PET) and polypropylene (PP) are widely used and frequently encountered in domestic and industrial plastics, especially in the soft drink bottles. In the present work, different compositions of PP/PET blends were prepared and compatibilized by various contents of SEBS-g-MAH. The compatibilizing efficiency was examined using macro- (tensile and impact strength) and micro-mechanical testing (microhardness measurement), differential scanning calorimetry (DSC), wide-angle X-ray scattering (WAXS), and melt flow index (MFI) determinations. The results show that the addition of SEBS-g-MAH improves the processability and the toughness of these blends. The changes in the melting enthalpies (ΔH) of the PP and PET components and the decrease of MFI values in the compatibilized blends indicated enhanced interactions between the discrete PET and PP phases induced by the functional compatibilizer. The DSC crystallinity of each component depended on the blend composition, and was slightly influenced by the presence of the compatibilizer. In the samples subjected to compression molding, the WAXS crystallinity of PP component slightly decreased in the presence of increasing amounts of compatibilizer.
Descripción10 pags., 9 figs., 2 tabs.
URIhttp://hdl.handle.net/10261/169805
Identificadoresissn: 0035-3930
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