Synergistically toughening high-density polyethylene with calcium carbonate and elastomer

Authors

  • Tingxiu Xie,

    1. R&D Center, Shanghai Genius Advanced Materials Co., Limited, Shanghai, 201109, P. R. China
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  • Hongzhi Liu,

    1. CAS Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Science, Beijing, 100080, P. R. China
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  • Yuchun Ou,

    Corresponding author
    1. CAS Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Science, Beijing, 100080, P. R. China
    • CAS Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Science, Beijing, 100080, P. R. China
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  • Guisheng Yang

    1. R&D Center, Shanghai Genius Advanced Materials Co., Limited, Shanghai, 201109, P. R. China
    2. CAS Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Science, Beijing, 100080, P. R. China
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Abstract

The microstructure, impact strength, and rheological properties of blends consisting of high-density polyethylene (HDPE) and maleated poly (ethylene-octene) (POEg) and/or calcium carbonate (CaCO3) were investigated. The improvement of impact strength of HDPE/POEg was limited due to the high miscibility between them. The introduction of CaCO3 had a negative impact on the toughness of the matrix because of the poor interfacial adhesion. In ternary blends of HDPE/POEg/CaCO3, an elastomer layer was formed around CaCO3 particles due to the strong interaction between POEg and CaCO3, which improves the HDPE-CaCO3 interfacial strength and the toughness of the blends. A significant enhancement of dynamic viscosity, storage modulus, and the low-shear viscosity were observed as the results of the high miscibility of HDPE with POEg and strong interaction between POEg and CaCO3. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 3213–3221, 2005

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