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首页> 外文期刊>Journal of Applied Polymer Science >An investigation on recycled PET/PP and recycled PET/PP-EP compatibilized blends: Rheological, morphological, and mechanical properties
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An investigation on recycled PET/PP and recycled PET/PP-EP compatibilized blends: Rheological, morphological, and mechanical properties

机译：再生PET / PP和再生PET / PP-EP相容混合物的研究：流变，形态和机械性能

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摘要

The effectiveness of P(E-co-MA-co-GMA) as a compatibilizer for recycled PET/PP and recycled PET/PP-EP (polypropylene (ethylene-propylene) heterophase copolymer) blends was investigated by means of morphological (scanning electron microscopy), rheological (small amplitude oscillatory shear), mechanical (tensile, flexural and impact tests), and thermal (differential scanning calorimetry) properties. Compatibilizer concentration ranged from 1 to 5 wt % with respect to the whole blend. All blends were obtained in a 90/10 composition using a twin screw extruder. Compatibilization effects for PETr/PP-EP were more pronounced due to ethylene segments present in both PP-EP and P(E-co-EA-co-GMA). PETr/PP-EP has shown greater dispersed phase size reduction, a more solid-like complex viscosity behavior and larger storage modulus at low frequencies in relation to PETr/PP blend. For both investigated blends, mechanical properties indicated an improvement in both elongation at break and impact strength with increasing compatibilizer content. PETr/PP-EP blends showed improved performance for the same level of compatibilizer content. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41892.
机译：通过形态学（扫描电子）研究了P（E-co-MA-co-GMA）作为再生PET / PP和再生PET / PP-EP（聚丙烯（乙烯-丙烯）异相共聚物）共混剂的相容剂的有效性显微镜），流变学（小振幅振荡剪切），机械（拉伸，挠曲和冲击试验）和热（差示扫描量热法）性能。相对于整个共混物，相容剂浓度为1-5重量％。使用双螺杆挤出机以90/10组成获得所有共混物。由于PP-EP和P（E-co-EA-co-GMA）中均存在乙烯链段，因此PETr / PP-EP的增容效果更加明显。与PETr / PP共混物相比，PETr / PP-EP在低频下表现出更大的分散相尺寸减小，更像固体的复数粘度行为和更大的储能模量。对于两种研究的共混物，机械性能均表明，随着相容剂含量的增加，断裂伸长率和冲击强度均得到改善。在相同含量的相容剂含量下，PETr / PP-EP共混物表现出更高的性能。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41892。

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