## Abstract In the present work we report the results of a Thermally Stimulated Discharge Currents (TSDC) study of a side‐chain liquid‐crystalline polymer. The different discharges observed in the TSDC spectrum have been analysed by the thermal sampling technique and have been attributed to specifi
Dipolar relaxations in the glass transition region and in the liquid crystalline phase of two side-chain liquid crystalline polysiloxanes
✍ Scribed by Joaquim J. Moura Ramos; João F. Mano; David Lacey; G. Nestor
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 769 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0887-6266
No coin nor oath required. For personal study only.
✦ Synopsis
The molecular relaxation mechanisms in the glass transition region and in the liquid crystalline phase exhibited by two side-chain liquid crystalline polysiloxanes have been studied by Thermally Stimulated Discharge Currents. These results were compared with those previously obtained by dielectric relaxation spectroscopy. It was observed that two relaxation mechanisms were present in the liquid crystalline phase, and we suggest that these might correspond to the motions of the mesogenic moieties in the liquid crystalline phase. 0 1996 John Wiley & Sons, Inc.
📜 SIMILAR VOLUMES
## Abstract Thermal relaxation behavior of a mechanically induced macroscopic orientation of the mesogenic groups in a side‐chain liquid crystalline polyacrylate was investigated using timedependent polarized infrared spectroscopy. It was found that a complete relaxation occurred only at temperatur
The dielectric behavior of a series of ferroelectric side-chain liquid crystalline polysiloxanes containing 1-3 oligooxyethylene units as spacers, and 4-(S)-Z-methyl-l-butyl[ [($-hydroxybiphenyl-4'-yl)]carbonyl]oxy] benzoate or 4-(S) -2-methyl-1 -butyl[ [ (4-hydroxy-biphenyl-4'yl)carbonyl]oxy] -3-fl
is highly acknowledged.
## Abstract The structure of poly(L‐lysine) containing 44% azobenzene units in the side chain was studied by X‐ray diffraction between room temperature and 150°C. The polymer exhibits a mesomorphic structure of the smectic A1 type. In this structure, stable at least until 150°C, each smectic layer