ABSTRACT

In the present study, the compatibilisation of polypropylene/polyethylene terephthalate (PP/PET) blends with different types of compatibilisers including maleic anhydride-grafted polypropylene (PP-g-MA), glycidyl methacrylate-grafted polypropylene (PP-g-GMA) and ethylene propylene diene monomer (EPDM) rubber in different concentrations was examined. Samples were evaluated in terms of morphology, thermal and rheological properties. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimeter (DSC) were used. According to the results, all samples had a matrix-droplet morphology. Moreover, with increasing the compatibiliser and its concentration, the droplet sizes in dispersed phase decreased. In other words, compatibilised PP/PET showed a greater dispersed phase size reduction, lower crystallinity percentage and larger storage modulus at low frequencies in comparison with non-compatibilised PP/PET blend. Among different samples, polymer blend compatibilised with PP-g-MA (5 phr) indicated the lowest particle size and significantly improved the compatibilisation of the PP/PET blend.

摘要

在本研究中，聚丙烯/聚对苯二甲酸乙二醇酯 (PP/PET) 与不同类型的相容剂共混，包括马来酸酐接枝聚丙烯 (PP-g-MA)、甲基丙烯酸缩水甘油酯接枝聚丙烯 (PP-g-GMA) 和检测了不同浓度的三元乙丙橡胶 (EPDM) 橡胶。根据形态、热和流变特性对样品进行评估。使用扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和差示扫描量热仪（DSC）。根据结果​​，所有样品都具有基质液滴形态。此外，随着增容剂及其浓度的增加，分散相中的液滴尺寸减小。换言之，相容的 PP/PET 表现出更大的分散相尺寸减小，与非相容的 PP/PET 共混物相比，较低的结晶度百分比和较大的低频储能模量。在不同的样品中，与 PP-g-MA（5 份）相容的聚合物共混物显示出最低的粒径，并显着提高了 PP/PET 共混物的相容性。