Lewis acid initiated melt reactions of polystyrene and EPDM rubber

Erzsébet Móri, Béla Pukánszky, Tibor Kelen, Ferenc Tüdös

Research output: Contribution to journalArticle

10 Citations (Scopus)


In order to obtain high impact polystyrene (PS), experiments have been performed on coupling of EPDM rubber and PS in the mixing chamber of a HAAKE plastograph. Lewis acids were added to the melt and the torque increase observed by their addition proved that chemical reactions take place in the system. During the reaction, the rubber proved to be more active, it became crosslinked and/or it was coupled with the PS molecules. Only a small fraction of the PS present coupled to the rubber molecules. No significant degradation process could be detected. Mechanical properties (tensile modulus and strength) improved during the reaction. This can be interpreted by the increased solubility of the coupled rubber molecules in the continuous PS phase.

Original languageEnglish
Pages (from-to)157-163
Number of pages7
JournalPolymer Bulletin
Issue number2
Publication statusPublished - Aug 1 1984

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

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