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首页> 外文期刊>Journal of Applied Polymer Science >Effect of styrene-isoprene-styrene, styrene-butadiene-styrene, and styrene-butadiene-rubber on the mechanical thermal, rheological, and morphological properties of polypropylene/polystyrene blends
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Effect of styrene-isoprene-styrene, styrene-butadiene-styrene, and styrene-butadiene-rubber on the mechanical thermal, rheological, and morphological properties of polypropylene/polystyrene blends

机译：苯乙烯-异戊二烯-苯乙烯，苯乙烯-丁二烯-苯乙烯和苯乙烯-丁二烯-橡胶对聚丙烯/聚苯乙烯共混物的机械热学，流变学和形态学性能的影响

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The mechanical, thermal, rheological, and morphological properties of polypropylene (PP)/polystyrene (PS) blends compatibilized with styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS), and styrene-butadiene-rubber (SBR) were studied. The incompatible PP and PS phases were effectively dispersed by the addition of SIS, SBS, and SBR as compatibilizers. The PP/PS blends were mechanically evaluated in terms of the impact strength, ductility, and tensile yield stress to determine the influence of the compatibilizers on the performance properties of these materials. SIS- and SBS-compatibilized blends showed significantly improved impact strength and ductility in comparison with SBR-compatibilized blends over the entire range of compatibilizer concentrations. Differential scanning calorimetry indicated compatibility between the components upon the addition of SIS, SBS, and SBR by the appearance of shifts in the melt peak of PP toward the melting range of PS. The melt viscosity and storage modulus of the blends depended on the composition, type, and amount of compatibilizer. Scanning electron microscopy images confirmed the compatibility between the PP and PS components in the presence of SIS, SBS, and SBR by showing finer phase domains. (C) 2003 Wiley Periodicals, Inc. [References: 24]
机译：与苯乙烯-异戊二烯-苯乙烯（SIS），苯乙烯-丁二烯-苯乙烯（SBS）和苯乙烯-丁二烯-橡胶（SBR）相容的聚丙烯（PP）/聚苯乙烯（PS）共混物的机械，热，流变和形态学性质被研究了。通过添加SIS，SBS和SBR作为增容剂，可以有效地分散不相容的PP和PS相。根据冲击强度，延展性和拉伸屈服应力对PP / PS共混物进行机械评估，以确定增容剂对这些材料的性能的影响。在整个增容剂浓度范围内，与SBR增容的混合物相比，SIS和SBS增容的混合物显示出显着改善的冲击强度和延展性。差示扫描量热法通过在PP的熔解峰向PS的熔解范围内的偏移出现，表明在添加SIS，SBS和SBR后组分之间的相容性。共混物的熔体粘度和储能模量取决于相容剂的组成，类型和量。扫描电子显微镜图像通过显示更精细的相域，证实了在SIS，SBS和SBR存在下PP和PS组分之间的相容性。 （C）2003 Wiley Periodicals，Inc. [参考：24]

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