Suppression of charge injection into LDPE by addition of MgO nanofillers

Kazuyuki Ishimoto*, Toshikatsu Tanaka, Yoshimichi Ohki, Yoitsu Sekiguchi, Yoshinao Murata

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Recently, polymer nanocomposite has been attracting much attention as an emerging insulating material. In this paper, we measured space charge distribution in low-density polyethylene (LDPE)/MgO nanocomposite at room temperature and 90 °C. At room temperature, while a huge amount of packet-like charge moving from the anode to the cathode is observed in the base LDPE, such packet-like charge is not observed in the MgO-added nanocomposites. On the other hand, at 90 °C, while injection of negative charge from the cathode is dominant in the base LDPE, the filler addition significantly suppresses the injection. As a consequence space charge is barely formed in the 2-phr MgO-added sample at the two temperatures.

Original languageEnglish
Pages (from-to)742-743
Number of pages2
JournalIEEJ Transactions on Fundamentals and Materials
Issue number12
Publication statusPublished - 2008


  • Low-density polyethylene
  • Nanocomposite
  • Pulsed electro-acoustic method
  • Space charge

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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