Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 4, Issue 9, Pages 4740-4745Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am301119b
Keywords
polyamide 12; graphene; melt compounding; electrical conductivity; selective localization; nanocomposites
Funding
- National Natural Science Foundation of China [51073012, 51103007, 51125010]
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Electrically conductive polyamide 12 (PA12)/graphene binary nanocomposites with a low percolation threshold of 0.3 vol % were prepared by melt compounding. A rapid increase in electrical conductivity from 2.8 X 10(-14) S/m of PA12 to 6.7 X 10(-2) S/m was achieved with similar to 1.38 vol % graphene. It is shown that graphene sheets were homogeneously dispersed in PA12 matrix. Furthermore, polyethylene-octene rubber grafted with maleic anhydride (POE-g-MA) was used to further enhance the electrical conductivity of PA12/graphene nanocomposites. Three compounding sequences were adopted to tailor the microstructure and properties of the ternary nanocomposites. Both highest electrical conductivity and storage modulus were obtained when most graphene sheets were located in PA12 matrix rather than in POE-g-MA phase.
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