6533b820fe1ef96bd127a2be

RESEARCH PRODUCT

Thermotropic polyesters with mesogenic groups based on substituted hydroquinone units and highly flexible siloxan spacer in the main chain

Carlos AguileraHelmut Ringsdorf

subject

Polarized light microscopyMaterials sciencePolymers and PlasticsMesogenMesophaseGeneral ChemistryCondensed Matter PhysicsThermotropic crystalPolyesterDifferential scanning calorimetryLiquid crystalPolymer chemistryMaterials ChemistryGlass transition

description

New thermotropic Polyesters having mesogenic groups based on substituted hydroquinone units and highly flexible oligosiloxan spacer in the main chain, are synthesized and characterized. The mesophase formed at low temperature are studied by differential scanning calorimetry (DSC) and polarized light microscopy. The liquid crystalline behaviour of these polyesters, particulary their transition temperatures and the mesophase width could be explained on the basis of their structural features.

https://doi.org/10.1007/bf00258278