1. Blends of an epoxy thermosetting polymer with aromatic liquid-crystalline polyesters
- Author
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Werner Mormann, Roger Legras, Wojciech Jasinski, and Véronique Carlier
- Subjects
Cloud point ,Materials science ,Polymers and Plastics ,Organic Chemistry ,Thermosetting polymer ,Epoxy ,Dynamic mechanical analysis ,Condensed Matter Physics ,Miscibility ,Polyester ,visual_art ,Materials Chemistry ,visual_art.visual_art_medium ,Composite material ,Thermal analysis ,Curing (chemistry) - Abstract
A series of aromatic liquid-crystalline polyesters with different composition have been synthesized to adjust transition temperatures and molecular weight. Miscibility of polyesters with bisphenol-A-diglycidyl ether (DEGBA), 4,4'-methylene-bis(3-chloro-2,6-dimethylaniline) (MCDEA) and the influence on transition temperatures has been studied. Miscibility of binary and ternary mixtures was found over the whole range of composition depending on the temperature. Thermoset formation by curing of LC-polyester / DEGBA / MCDEA mixtures containing different amounts of polyester resulted in reaction-induced phase separation with polyester content from 30 to 50 wt.%. Cloud point techniques, scanning electron microscopy (SEM) and dynamic mechanical thermal analysis (DMTA) have been applied.
- Published
- 2003
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