Effects of solvent extraction on space charge behavior of LDPE

Kwang Seok Suh, Kyung Won Lee

Research output: Contribution to journalArticle

Abstract

Space charge behavior such as charge distributions and conduction characteristics has been investigated by treating three low density polyethylenes having equivalent density (0.920 g/cm3) and melt index (2.0 g/10 min) in a xylene solution at 50-72°C. It is found that the short chains of low molecular weight are removed by a boiling xylene solution increases with the increase of extraction temperature, the amount of which is different sample to sample and that short chains affect charge accumulation in a different manner depending on samples. In the case of conduction characteristics, the removal of short chains reduces current densities in all samples, but a space-charge-limited conduction(SCLC) mechanism, found in control LDPE samples remains unchanged regardless of extraction temperature. The charge formation in LDPE is also found to be independent of content of chemical structural irregularities.

Original languageEnglish
Pages (from-to)709-715
Number of pages7
JournalPolymer (Korea)
Volume20
Issue number4
Publication statusPublished - 1996

Keywords

  • Charge distributions
  • Electrical conduction
  • Low density polyethylene
  • Short chains
  • Space charge

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

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