Copolyesters containing polyisobutylene soft segments and polybutylene terephthalate as the crystalline segments

G. Deák, J. P. Kennedy

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The preparation and characterization of multiblock copolymers consisting of polyiso-butylene (PIB) soft segments connected to dimethyl terephthalate (DMT) plus 1,4-butane diol (BD) hard segments (PIB-6-PBT)n are described. Syntheses involved solution poly-condensation of DMT + BD + hydroxyl ditelechelic PIB (HO-PIB-OH). The overall block composition, and the lengths of the soft segments were varied in the Mn,PIB=1,400-10,000 g/mol range. The presence of PIB in the multiblocks was demonstrated. The solubility in THF and other solvents, and extractability of the polymers with n-hexane were studied. Efforts to determine solution viscosity remained unsuccessful due to the insolubility of the polar and nonpolar segments in a common solvent. Mechanical testing gave unacceptable results, however, the multiblocks showed good thermal stability (up to 367 °C in air) and melt processibility appears to be feasible.

Original languageEnglish
Pages (from-to)439-449
Number of pages11
JournalJournal of Macromolecular Science - Pure and Applied Chemistry
Volume33
Issue numberSUPPL. 7/8
DOIs
Publication statusPublished - 1996

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

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