Improved electrical conductivity of polyamide 12/graphene nanocomposites with maleated polyethylene-octene rubber prepared by melt compounding.
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 × 10(-14) S/m of PA12 to 6.7 × 10(-2) S/m was achieved with ~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.
State Key Laboratory of Organic-Inorganic Composites, Department of Polymer Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Dong
D
Yan
Hao-Bin
HB
Zhang
Yu
Y
Jia
Juan
J
Hu
Xian-Yong
XY
Qi
Zhong
Z
Zhang
Zhong-Zhen
ZZ
Yu
D004553:Electric Conductivity; D006108:Graphite / Q000737:chemistry*; D008299:Maleic Anhydrides / Q000737:chemistry; D053761:Nanocomposites / Q000737:chemistry; D009757:Nylons / Q000737:chemistry*; D020959:Polyethylene / Q000737:chemistry*; D012408:Rubber / Q000737:chemistry*
D008299:Maleic Anhydrides; D009757:Nylons; C036222:nylon 12; D006108:Graphite; D020959:Polyethylene; D012408:Rubber