Effect of a thermoplastic elastomer compatibilizer (sebs-g-mah) on the properties of PP/PET blends
| Autor: | Debbah, I., Krache, R., Belkouissem, K., Benachour, D., Cagiao, M. E. |
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| Přispěvatelé: | Ministerio de Ciencia e Innovación (España) |
| Rok vydání: | 2018 |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | 10 pags., 9 figs., 2 tabs. Polyethylene 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. One of the authors (MEC) wishes to thank the Spanish Ministry of Science and Innovation MICINN for the financial support of this investigation (Grant MAT2009-07789). |
| Databáze: | OpenAIRE |
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