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Materials 2016, 9(4), 240;

Enhancement in Mechanical and Electrical Properties of Polypropylene Using Graphene Oxide Grafted with End-Functionalized Polypropylene

Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
Author to whom correspondence should be addressed.
Academic Editor: Biqiong Chen
Received: 30 November 2015 / Revised: 22 March 2016 / Accepted: 23 March 2016 / Published: 29 March 2016
(This article belongs to the Special Issue Polymer Nanocomposites)
PDF [4304 KB, uploaded 29 March 2016]


Terminally hydroxylated polypropylene (PP) synthesized by a chain transfer method was grafted to graphene oxide (GO) at the chain end. Thus obtained PP-modified GO (PP-GO) was melt mixed with PP without the use of a compatibilizer to prepare PP/GO nanocomposites. Mechanical and electrical properties of the resultant nanocomposites and reference samples that contained graphite nanoplatelets, partially reduced GO, or fully reduced GO were examined. The best improvement in the tensile strength was obtained using PP-GO at 1.0 wt %. The inclusion of PP-GO also led to the highest electrical conductivity, in spite of the incomplete reduction. These observations pointed out that terminally hydroxylated PP covalently grafted to GO prevented GO layers from re-stacking and agglomeration during melt mixing, affording improved dispersion as well as stronger interfacial bonding between the matrix and GO. View Full-Text
Keywords: nanocomposites; polypropylene; end-functionalization; grafting; graphene oxide nanocomposites; polypropylene; end-functionalization; grafting; graphene oxide

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Chammingkwan, P.; Matsushita, K.; Taniike, T.; Terano, M. Enhancement in Mechanical and Electrical Properties of Polypropylene Using Graphene Oxide Grafted with End-Functionalized Polypropylene. Materials 2016, 9, 240.

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