Interfacial charge in polyethylene/ethylene vinylacetate laminates

Kwang S. Suh, Jae Y. Kim, Hong S. Noh, Chang R. Lee

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Space charge formation in polyethylene (PE)/ethylene vinylacetate copolymer (EVA) laminates has been investigated using a pulsed electroacoustic method. The PE shows heterocharge while the EVA shows a broad distribution of positive charge over the sample. The positive charge in EVA decreases with the increase of vinylacetate (VA) content in EVA. Interfacial charge is found in all laminates and remains unchanged by heat treatment at 100°C to 1 h and by coating chemicals such as silicone oil and trimethylolpropane trimethacrylate at the interfaces. This interfacial charge distorts the electric field distribution in the direction of increasing the electric field in the PE layers. The charge distribution in PE/EVA blends has been measured and is explained via the results obtained with the laminates.

Original languageEnglish
Pages (from-to)758-764
Number of pages7
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Issue number6
Publication statusPublished - 1996

Bibliographical note

Funding Information:
This work was partly supported by the Electrical Engineering and Science Research Institute (95-7), Korea.

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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