Abstract
Abstractβ‐Nucleated isotactic polypropylene (iPP) blends with polyamide 6 (PA6) were prepared with a novel and highly efficient nano‐CaCO3‐supported β‐nucleating agent. Maleic anhydride grafted polypropylene (PP‐g‐MA), glycidyl methacrylate grafted polypropylene (PP‐g‐GMA), maleic anhydride grafted poly(ethylene octene) (POE‐g‐MA), and maleic anhydride grafted poly(ethylene vinyl acetate) (EVA‐g‐MA) elastomers were added to the blends as compatibilizers. The nonisothermal crystallization behavior and melting characteristics of β‐nucleated iPP and its blends were investigated with differential scanning calorimetry and wide‐angle X‐ray diffraction. The results indicated that the β‐iPP content in the β‐nucleated iPP blends depended not only on the preparation conditions but also on the compatibilizer type. A high β‐iPP content (>95%) in the β‐nucleated iPP/PA6 blends was obtained. The addition of PP‐g‐MA, POE‐g‐MA, and EVA‐g‐MA to the β‐nucleated iPP/PA6 blends increased the content of β‐iPP but decreased the crystallization temperature of iPP in the β‐nucleated iPP/PA6 blends. However, the addition of PP‐g‐GMA decreased the content of β‐iPP in the β‐nucleated iPP/PA6 blends. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
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