期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 48, 期 3, 页码 692-698出版社
WILEY-BLACKWELL
DOI: 10.1002/pola.23822
关键词
graphite nanosheet; in situ polymerization; metallocene catalysts; nanocomposite; polyethylene; polyolefins
The synthesis of polyethylene/graphite nanocomposites by in situ polymerization was achieved using the catalytic system Cp(2)ZrCl(2) (bis(cyclopentadienyl)zirconium(IV) dichloride)/ methylaluminoxane (MAO). Graphite with nano dimensions, previously treated with MAO, was added into the reactor as filler at percentages of 1, 2, and 5% (w/w). XRD analysis showed that the chemical and thermal treatments employed preserve the structure of the graphite sheets. The formation of graphite nanosheets and nanocomposites was confirmed by TEM and AFM. TEM micrographics showed that the polyethylene grew between the graphene nanosheets, giving intercalated and exfoliated graphite nanocomposites. (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 692-698, 2010
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