A new correlation between molecular parameters and physical properties of chlorobutyl rubbers grafted with polystyrene branches

Bela Pukanszky, Joseph P. Kennedy, Tibor Kelen

Research output: Contribution to journalArticle

Abstract

A series of chlorobutyl rubbers grafted with polystyrene branches have been prepared and backbone length, branch density and segment lengths between branches were calculated from the overall graft composition, number average molecular weight, and branch molecular weight. Analysis of the deformation process revealed unexpected correlations between the molecular parameters and tensile properties of the graft: the tensile strength is directly, and the elongation at break inversely proportional to the ratio of branch molecular weight to the molecular weight of segments between the branches. Further, the tensile strength and elongation at break are proportional to the molecular weight of the backbone. A general correlation was found between the backbone molecular weight and the specific breaking energy.

Original languageEnglish
Pages (from-to)437-443
Number of pages7
JournalPolymer Bulletin
Volume4
Issue number8
DOIs
Publication statusPublished - Apr 1981

ASJC Scopus subject areas

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

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