Proposal of a multi-core model for polymer nanocomposite dielectrics

Toshikatsu Tanaka*, Masahiro Kozako, Norikazu Fuse, Yoshimichi Ohki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1138 Citations (Scopus)


A multi-core model, i.e. a simplified term of a multi-layered core model, is proposed as a working hypothesis to understand various properties and phenomena that polymer nanocomposites exhibit as dielectrics and electrical insulation. It gives fine structures to what are called "interaction zones". An interfacial layer of several tens nm is multi-layered, which consists of a bonded layer, a bound layer, and a loose layer. In addition, the Gouy-Chapman diffuse layer with the Debye shielding length of several tens to 100 nm is superimposed in the interfacial layer to cause a far-field effect. Nano-particles may interact electrically with the nearest neighbors each other due to this effect, resulting in possible collaborative effect. Such a multi-core model with the far-field effect is discussed, for example, to explain partial discharge (PD) resistance of polyamide layered silicate nanocomposites, and is verified to demonstrate its effectiveness.

Original languageEnglish
Pages (from-to)669-681
Number of pages13
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Issue number4
Publication statusPublished - 2005 Aug


  • Dielectrics
  • Interaction zone
  • Interfaces
  • Multi-core model
  • Nanocomposites
  • Nanotechnology

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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