The glass transition temperature of 6/6.9 random copolyamides

Meital Zilberman, A. Siegmann*, M. Narkis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The glass transition temperatures (Tg) of a 6/6.9 random copolyamide series have been investigated as a function of copolymer composition. The analysis was carried out using the technique of differential scanning calorimetry, and the degree of crystallinity was determined by wide angle X-ray diffraction. It was found that conventional models for determining Tg values do not fit the copolymers of this study. An appropriate description is achieved by considering a model that accounts for molecular interactions. Both hydrogen bond content and degree of crystallinity lead to the observed deviation in Tg from the values predicted by conventional models.

Original languageEnglish
Pages (from-to)5065-5067
Number of pages3
Issue number26
StatePublished - 1995
Externally publishedYes


  • copolyamides
  • glass transition temperature
  • random copolymers


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