Correlations between Polymer Structure and Glass Transition Temperature. I. Polysiloxanes Polyarylenesiloxanes and Polyxylylenesiloxanes
Abstract
The glass transition temperatures of a number of polysiloxanes, polyarylenesiloxanes, poly(fluoro)alkylene siloxanes and polyxylylenesiloxanes were determined to provide much needed structure-property correlations for concurrent research efforts focused upon the tailoring or molecular backbone structures as a means of achieving desired property balance in novel polymers. These data supplemented with data from the literature were used to determine the effect of structural features on the glass transition temperature. Increases in glass transition temperatures were observed for polymers with larger and bulkier substituents on the silicone. The presence of aliphatic and aromatic moieties in the siloxane chain also coincided with higher glass transition temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1975
- Accession Number
- ADB009388
Entities
People
- Gerhard F. L. Ehlers
- Kurt R. Fisch
Organizations
- Air Force Research Laboratory