In this work, b-polypropylene/polystyrene (b-PP/PS) blends were prepared with PP, PS, and a novel supported b-nucleating agent or b-nucleated PP and PS. The b-PP/PS blends were compatabilized by PP-g-MA, PP-g-GMA, POE-g-MA, and EVA-g-MA, respectively. For exploring the effect of PS amount and compatibilizers on the b-nucleation of PP, crystallization behavior and melting characteristics, the b-crystal content and crystal morphology of b-PP are characterized by differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), and polarized light microscopy (POM). The results indicated that the PP with high content of b-crystal was obtained by addition of CaCO 3 supported b-nucleating agent (b-NA) into PP. The b-nucleation, crystallization behavior, and melting characteristics, and the b-crystal content of b-PP in these blends were not influenced by addition of PS and its amount. However, the increased content of PS decreased the size of b-spherulites of PP in these blends. The b-nucleation of PP in compatabilized blends slightly depended on the compatibilizers. b-PP/PS blends with high b-crystal content can easily be prepared.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.