Electrical properties of acrylic acid grafted polyethylene

Chang Ryung Lee, Ok Kim, Kwang Suck Suh

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Abstract

Electrical properties such as space charge accumulation, conduction characteristics, dielectric breakdown and water treeing of acrylic acid-grafted polyethylene (PE-g-AA) were investigated. In PE-g-AA, heterocharge found in LDPE decreased with the increase of AA graft ratio and changed to the homocharge formation above 0.1 wt% due to the introduction of carbonyls. Conduction currents and charge mobilities of PE-g-AAs decreased with the increase of AA graft ratio, while conduction mechanism remains unchanged. AC breakdown strength increased and water treeing length decreased with the increase of graft ratio in PE-g-AA. Carbonyls acting as trap sites and sources of charge injection may play an important role in the determination of electrical properties of grafted polyethlene.

Original languageEnglish
Pages (from-to)991-998
Number of pages8
JournalPolymer (Korea)
Volume21
Issue number6
Publication statusPublished - 1997 Dec 1

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Keywords

  • AC breakdown strength
  • Electrical conduction
  • Grafting
  • Polyethylene
  • Space charge
  • Water treeing

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

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