Reversible Nonlinear Conduction in High-Density Polyethylene/Acetylene Carbon Black Composites at Various Ambient Temperatures

Yihu Song, Qiang Zheng, Xiao Su Yi

Research output: Journal PublicationArticlepeer-review

18 Citations (Scopus)

Abstract

The reversible nonlinear conduction (RNC) in of high-density polyethylene/acetylene carbon black composites with different degrees of crosslinking was studied above room temperature and below the melting point of high-density polyethylene (HDPE). The experimental current density-electric field strength curves can be overlapped onto a master curve, suggesting that the microscopic mechanisms for the appearance of RNC exist regardless of the ambient temperature and the crosslinking degree of the HDPE matrix. The relationship between the crossover current density and the linear conductivity can be explained in the framework of the dynamic random-resistor-network model. According to these results, two electron-tunneling models are suggested to interpret the microscopic conduction behavior.

Original languageEnglish
Pages (from-to)1212-1217
Number of pages6
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume42
Issue number7
DOIs
Publication statusPublished - 1 Apr 2004
Externally publishedYes

Keywords

  • Carbon black
  • Conducting composites
  • High-density polyethylene
  • Reversible nonlinear conduction
  • Scaling behavior

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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