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Binary and ternary blends of high-density polyethylene with poly(ethylene terephthalate) and polystyrene based on recycled materials

机译:基于再生材料的高密度聚乙烯与聚对苯二甲酸乙二醇酯和聚苯乙烯的二元和三元共混物

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摘要

Binary blends of recycled high-density polyethylene (R-HDPE) with poly(ethylene terephthalate) (R-PET) and recycled polystyrene (R-PS), as well as the ternary blends, i.e. R-HDPE/R-PET/R-PS, with varying amounts of the constituents were prepared by twin screw extruder. The mechanical, rheological, thermal, and scanning electron microscopy (SEM) analyses were utilized to characterize the samples. The results revealed that both R-HDPE/R-PET and R-HDPE/R-PS blends show phase inversion but at different compositions. The R-PET was found to have much higher influence on the properties enhancement of the R-HDPE compared to R-PS, but at the phase inverted situation, a significant loss in the tensile strength of R-HDPE/R-PET blend was observed due to the weak interaction at this morphological state. However, the ternary blends with higher loading of second phase, namely greater than 50 wt% of R-PETRR-PS, demonstrated better mechanical properties than the binary blends with the same content of either R-PET or R-PS.
机译:再生高密度聚乙烯(R-HDPE)与聚对苯二甲酸乙二醇酯(R-PET)和再生聚苯乙烯(R-PS)的二元共混物,以及三元共混物,即R-HDPE / R-PET / R用双螺杆挤出机制备具有不同含量组分的-PS。利用机械,流变学,热学和扫描电子显微镜(SEM)分析来表征样品。结果表明,R-HDPE / R-PET和R-HDPE / R-PS共混物均表现出相转化,但组成不同。与R-PS相比,发现R-PET对R-HDPE的性能增强有更高的影响,但在相变情况下,R-HDPE / R-PET共混物的拉伸强度显着下降由于在这种形态状态下的相互作用较弱而观察到。然而,具有较高第二相负载的三元共混物,即大于R-PETRR-PS的50 wt%,比具有相同含量的R-PET或R-PS的二元共混物表现出更好的机械性能。

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