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Role of organically modified layered silicate as an active interfacial modifier in immiscible polystyrene/polypropylene blends

机译:有机改性层状硅酸盐在不混溶的聚苯乙烯/聚丙烯共混物中作为活性界面改性剂的作用

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摘要

The role of organically modified layered silicate as a compatibilizer for immiscible polystyrene (PS) with polypropylene (PP) or polypropylene grafted with maleic anhydride (PP-g-MA) blends was investigated. Scanning electron micrographs (SEM) revealed efficient mixing of the polymers in the presence of organically modified layered silicate. X-ray diffraction (XRD) patterns and transmission electron microscopic (TEM) observations showed that silicate layers were either intercalated or exfoliated, depending on their interactions with the polymer pair, and were located at the interface between the two polymers. The compatibilizing action of the organically modified layered silicate resulted in a decrease in interfacial tension and particle size and in a remarkable increase in mechanical properties of the modified immiscible blends.
机译:研究了有机改性层状硅酸盐作为与聚丙烯(PP)或接枝马来酸酐(PP-g-MA)共混物的聚丙烯不相容的聚苯乙烯(PS)的增容剂的作用。扫描电子显微照片(SEM)显示在有机改性的层状硅酸盐存在下聚合物的有效混合。 X射线衍射(XRD)模式和透射电子显微镜(TEM)观察表明,硅酸盐层是插层的还是剥落的,取决于它们与聚合物对的相互作用,并且位于两种聚合物之间的界面。有机改性的层状硅酸盐的增容作用导致界面张力和粒度降低,并且改性的不混溶共混物的机械性能显着提高。

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