Affiliation:
1. Kazan National Research Technological University
Abstract
This work was carried out to obtain a number of aromatic oligoetheramides and to evaluate the effect of their structure on mesomorphic and thermal properties. Oligoetheramides based on 4-aminobenzoic acid (4-ABA) were synthesized by hightemperature polycondensation. The structure of the obtained compounds was identified by IR spectroscopy, the thermal parameters were determined from the data of thermogravimetric analysis (TGA), the phase transition temperatures were determined by differential scanning calorimetry (DSC), and the manifestation of the optical activity of oligoetheramide solutions was studied by optical polarization microscopy (OPM). It was revealed that the samples dissolve when heated in sulfuric acid, in dimethylformamide (DMF), dimethylacetamide (DMAA) and have limited solubility in dimethylsulfoxide (DMSO). Solutions of oligomers exhibited optical activity at crossed microscope polarizers.
Publisher
Publishing House Plastic Ltd
Subject
Polymers and Plastics,Chemical Engineering (miscellaneous)
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