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Nanocomposites: Ultrahigh Electrical Resistance of Poly(cyclohexyl methacrylate)/Carbon Nanotube Composites Prepared Using Surface‐Initiated Polymerization (Adv. Funct. Mater. 11/2012)
Author(s) -
Hayashida Kenichi,
Tanaka Hiromitsu
Publication year - 2012
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201290064
Subject(s) - materials science , nanocomposite , carbon nanotube , composite material , methacrylate , dielectric , electrical conductor , polymer , nanotube , electrical resistivity and conductivity , polymerization , optoelectronics , electrical engineering , engineering
It is commonly thought that conventional polymer/carbon nanotube (CNT) nanocomposites are electrically conductive because the CNTs easily percolate in the polymer matrix. On page 2338 Kenichi Hayashida and Hiromitsu Tanaka report that this is not the case. A multiwalled CNT onto which poly(cyclohexyl methacrylate) is densely grafted has much higher volume resistivity than a conventional nanocomposite. Impedance analysis clearly shows that the highly insulated nanocomposite is a dielectric, not a conductor.