Compatibilizing effect of SEBS for electrical properties of LDPE/PS blends

Tae Hee Lee, Tae Young Kim, Dong Myung Kim, Won Jung Kim, Je Hyuk Lee, Kwang S. Suh

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17 Citations (Scopus)


In the previous study, we observed compatibilizing effects of low density polyethylene (LDPE)/polystyrene (PS) with polystyrene-block-poly(ethylene-co-butylene)-block-polystyrene (SEBS), a triblock copolymer. Blends consisting of 70 wt.-% LDPE and 30 wt.-% PS were prepared with a SEBS concentration of up to 10 wt.-%. This study examined the electrical properties such as the electrical break-down, water tree length, permittivity and tan δ in the blends. The possibility of using these blends as insulating material substitutes for LDPE was investigated. The electrical break-down strength reached a maximum of 66.67 kV/mm, which is superior to 50.27 kV/mm of the LDPE used as electrical insulators for cables. In addition, the water tree length decreased with increasing SEBS concentration. The water tree lengths of the blends containing SEBS were shorter than that of the LDPE. The permittivity of the blends was 2.28-2.48 F/m, and decreased with increasing SEBS concentration with the exception of S-0. Tan δ of the blends increased smoothly with increasing SEBS content.

Original languageEnglish
Pages (from-to)109-113
Number of pages5
JournalMacromolecular Materials and Engineering
Issue number2
Publication statusPublished - 2006 Feb 10


  • Blends
  • Compatibility
  • Electrical properties
  • Polyethylene (PE)
  • Polystyrene

ASJC Scopus subject areas

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


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