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首页> 外文期刊>Journal of Applied Polymer Science >Morphology and mechanical properties of polypropylene/high-impact polystyrene blends from postconsumer plastic waste
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Morphology and mechanical properties of polypropylene/high-impact polystyrene blends from postconsumer plastic waste

机译：消费后塑料废料中的聚丙烯/高抗冲聚苯乙烯共混物的形态和力学性能

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摘要

The compatibilizing effect of the triblock copolymer poly(styrene-b-ethylene-co-butylene-b-styrene) (SEBS) on the morphological and mechanical properties of virgin and recycled polypropylene (PP)/high-impact polystyrene (HIPS) blends was studied, with the properties optimized for rigid composite films. The components of the blend were obtained from municipal plastic waste, PP being acquired from mineral water bottles (PPb) and HIPS from disposable cups. These materials were preground, washed only with water, dried with hot air, and ground again (PPb) or agglutinated (HIPS). Blends with three different weight ratios of PP, and HIPS (6:1, 6:2, and 6:3) were prepared, and three different concentrations of SEBS (5, 6, and 7 wt %) were used for investigations of its compatibilizing effect. Scanning electron microscopy showed that SEBS reduced the diameter of dispersed HIPS particles in the globular and fibril shapes and improved the adhesion between the disperse phase and the matrix. However, SEBS interactions with PPb and HIPS influenced the mechanical properties of the compatibilized PPb/HIPS/SEBS blends. An adequate composition of PP/ HIPS, for both virgin and recycled blends, for applications in composite films with characteristics similar to those of synthetic paper was obtained with a minimal amount of SEBS and a maximal HIPS/PP ratio in the range of concentrations studied. (C) 2003 Wiley Periodicals, Inc. [References: 20]
机译：三嵌段共聚物聚（苯乙烯-b-乙烯-共-丁烯-b-苯乙烯）（SEBS）对原始和再生聚丙烯（PP）/高抗冲聚苯乙烯（HIPS）共混物的形态和机械性能的增容作用为进行了研究，优化了刚性复合膜的性能。共混物的成分来自市政塑料废物，PP来自矿泉水瓶（PPb），HIPS来自一次性杯子。将这些材料进行预研磨，仅用水洗涤，用热空气干燥，然后再次研磨（PPb）或凝集（HIPS）。制备具有三种不同重量比的PP和HIPS（6：1、6：2和6：3）的共混物，并使用三种不同浓度的SEBS（5、6和7 wt％）对其混合物进行研究增容效果。扫描电子显微镜显示，SEBS减小了呈球状和原纤维状分散的HIPS颗粒的直径，并改善了分散相与基质之间的附着力。但是，SEBS与PPb和HIPS的相互作用影响了相容PPb / HIPS / SEBS共混物的机械性能。在所研究的浓度范围内，以最少的SEBS和最大的HIPS / PP比获得了适用于新膜和再生混合物的PP / HIPS的适当成分，可用于合成膜中，具有与合成纸相似的特性。 （C）2003 Wiley Periodicals，Inc. [参考：20]

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