Accession Number:

AD0702753

Title:

THE GLASS TRANSITIONS OF ALIPHATIC IONENES.

Descriptive Note:

Technical rept.,

Corporate Author:

MCGILL UNIV MONTREAL (QUEBEC)

Personal Author(s):

Report Date:

1970-03-20

Pagination or Media Count:

25.0

Abstract:

The glass transition temperatures of a wide range of ionenes have been studied as a function of the spacing of ions and the dielectric constant of the plasticizer. For solvents of a high dielectric constant the extrapolated glass transition of most ionenes has a value of ca. OC, while for plasticizers of a low dielectric constant the value centers around -80C. It is suggested that a conformational transition is responsible for this drastic change in the extrapolated Tg values. A qa effect was also found, the slope of the Tg vs. qa plot being 695, i.e. quite similar to that for the phosphates, silicates and acrylates. Author

Subject Categories:

  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE