Unsaturated para‐linked aromatic LC polyesters: Thermotropic and lyotropic systems
- 10 March 1995
- journal article
- research article
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 55 (13) , 1787-1795
- https://doi.org/10.1002/app.1995.070551309
Abstract
Liquid‐crystalline thermosets (LCT) are a new class of materials which combine typical properties of LC polymers with those of conventional thermosets. This article reports on the development of a lyotropic LC thermoset (LLCT) in which the solvent is a vinyl monomer. Such an LLCT is expected to have several advantages compared to conventional unsaturated polyester resins. The synthesis and characterization of a variety of novel substituted para‐linked aromatic polyesters and copolyesters containing unsaturated fumaroyl units is presented. The thermal and liquid crystal properties were investigated. It is demonstrated that it is possible to prepare a lyotropic LC solution in styrene. These lyotropic solutions are capable of thermal crosslinking by the addition of a free‐radical initiator. © 1995 John Wiley & Sons, Inc.Keywords
This publication has 21 references indexed in Scilit:
- Thermotropic hydrocarbon main-chain liquid-crystalline polymers based on a tolan mesogen. Synthesis and characterizationMacromolecules, 1993
- Crosslinked liquid crystal polymers from liquid crystal monomers: Synthesis and mechanical propertiesJournal of Polymer Science Part A: Polymer Chemistry, 1993
- High-temperature crystalline and molecular structures of the main-chain thermotropic polyester poly[(oxydodecanedioyl)oxy-1,4-phenylene(2-methylvinylene)-1,4-phenylene]. An application of the fiber whole-pattern methodMacromolecules, 1992
- The mechanical and magnetic alignment of liquid crystalline epoxy thermosetsJournal of Polymer Science Part A: Polymer Chemistry, 1992
- Thermotropic functionalized polyesters with main-chain aromatic ortho-linked unitsMacromolecules, 1991
- Polymers from multifunctional isocyanates. 5. Synthesis of liquid-crystalline polyurethanes from (methyl-substituted)diisocyanato-substituted benzoatesMacromolecules, 1991
- New polymer syntheses. XLII. Thermotropic polyesters of hydroquinone and various aryloxyterephthalic acidsJournal of Polymer Science Part A: Polymer Chemistry, 1990
- Influence of lateral substituents on thermal behavior and solubility of aromatic LC‐polyestersMakromolekulare Chemie. Macromolecular Symposia, 1989
- Topochemical photodimerization in polymer liquid crystalsMacromolecules, 1988
- Para-linked, aromatic, thermotropic polyesters with low mesophase temperaturesMacromolecules, 1987