Jf. Mano et al., A THERMALLY STIMULATED DISCHARGE CURRENTS STUDY OF THE MOLECULAR MOTIONS IN 2 POLYSILOXANE SIDE-CHAIN LIQUID-CRYSTALLINE POLYMERS, Journal of polymer science. Part B, Polymer physics, 33(2), 1995, pp. 269-277
The technique of thermally stimulated depolarization currents was used
to study the dipolar relaxation mechanisms in two side-chain liquid-c
rystalline polysiloxanes. The studied polymers have the same mesogenic
side-group, but they differ in the number (or density) of side groups
attached to the main chain. In both cases three different relaxations
were observed: one in the vitreous state, one in the liquid crystalli
ne phase, and the glass transition relaxation. The features of those t
hermally stimulated discharges are discussed and some suggestions are
made concerning the attribution of those discharges at the molecular l
evel. (C) 1995 John Wiley and Sons, Inc.