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Fabrication and characterization of PE/MMT nanocomposites via copolymerization of ethylene and in situ formed α-olefins

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Abstract

An iron-based ethylene oligomerization catalyst, {[(2-ArN = C(Me))2C5H3N]FeCl2}(Ar = 2-CH3-4-OCH3(C6H4)) (Fe-Cat.) was synthesized and PE/MMT nanocomposites were prepared successfully employing the obtained catalyst supported on MMT and rac-Et(Ind)2ZrCl2 (Zr-Cat.) with ethylene as the single monomer and MAO the cocatalyst. The iron-based catalyst could oligomerize ethylene to α-olefins and they copolymerized with ethylene the same time to form PE/MMT nanocomposites in the interlayer of MMT under rac-Et(Ind)2ZrCl2. The catalytic system was of high polymeric activities towards ethylene copolymerization and produced branched PE matrix. Characterization of the resultant PE/MMT nanocomposites was performed with 13C nuclear magnetic resonance (NMR), X-ray diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimeter (DSC), and thermogravimetric analysis (TGA) etc. Also investigated were the mechanical properties of the resulting PE/MMT nanocomposites.

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Acknowledgements

The authors gratefully thank National Natural Science Foundation of China (Nos. 50573081, 50103012) for its financial support.

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Authors and Affiliations

  1. Science, Technology & Information Management Department, PetroChina Company Limited, Beijing, 100011, P.R. China

    Jinhua Qian

  2. Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, P.R. China

    Cun-Yue Guo, Hang Wang & Youliang Hu

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  1. Jinhua Qian
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  2. Cun-Yue Guo
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  3. Hang Wang
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Correspondence to Cun-Yue Guo.

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Qian, J., Guo, CY., Wang, H. et al. Fabrication and characterization of PE/MMT nanocomposites via copolymerization of ethylene and in situ formed α-olefins. J Mater Sci 42, 4350–4355 (2007). https://doi.org/10.1007/s10853-006-0692-5

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  • DOI: https://doi.org/10.1007/s10853-006-0692-5

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