## Abstract A series of new sideโchain liquid crystalline polymers was prepared with a polycarbonate backbone, bearing (__E__)โ4โฒโnitrostilbene mesogenic groups, connected to the backbone by spacers of different length. The polymers were synthesized in 1,4โdioxane by polycondensation of diphosgene
Synthesis and Characterization of Thermotropic Liquid Crystalline Main-Chain Polyurethanes from High-Aspect Ratio Mesogenic Diols
โ Scribed by Tallury Padmavathy; Sundarraj Sudhakar; Kalathur S. V. Srinivasan
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 206 KB
- Volume
- 202
- Category
- Article
- ISSN
- 1022-1352
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## SYNOPSIS Four series of thermotropic polyurethane elastomers (TPUEs) were synthesized in this study. The hard segments were formed by using 4,4'-methylenedicyclohexyl diisocyanate (H,,MDI) reacted with various mesogenic units, such as benzene-1,4-di(4-iminophenoxyn-hexanol), benzene-1,4-di(4-im
## Abstract We have synthesized a series of aliphaticโaromatic polyimides by high pressure polycondensation of monomer salts derived from diaminoalkanes and diethyl 4,4โณโterphenylโtetracarboxylates. The polyimides, designated as Pโ__n__TPE, were obtained with __n__, the number of methylene units in