PHYSICAL STUDIES OF IONICALLY TERMINATED POLYTETRAHYDROFURAN POLYMERS.4. SOLID-STATE STUDIES

The object of this work was to investigate the effect of the introduct ion of pyridinium chain-ends in polytetrahydrofuran (PTHF) polymers on certain solid-state properties. A comparison of solid-state propertie s of methoxy-terminated (PTHF-OMe) with pyridinium bromide-terminated (PTHF-Py) polytetrahydrofuran polymers of virtually identical molecula r weights was made. Crystallization studies and dynamic mechanical and stress-strain analyses have been undertaken. It was concluded that th e introduction of the ionic pyridinium bromide groups to the PTHF poly mers influenced the degree of crystallinity and this, in turn, affecte d other physical properties.