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THERMO-OPTICAL AND WOUND HEALING PROPERTIES OF CERTAIN NEW POLY(ESTER AMIDES)

A series of six new poly(ester amides) (PEAs) are synthesized from 2,5-pyridine dicarboxylic acid and structurally different diamines and diols by direct polycondensation. The three diols employed are 1,8-dihydroxyanthraquinone, hydroquinone bis(2-hydroxyethyl)ether and hydroquinone. Two diamines, namely 1,6-diamino hexane and 1,4diamino benzene are used in polymerization. These polymers are characterized extensively by spectroscopic techniques such as as 1 HNMR, 13 C NMR and FTIR spectra. The different properties of this poly (ester amides) such as inherent viscosity and qualitative solubility are reported. The thermal characteristics of the poly(ester amides) are determined by differential scanning calorimetry (DSC). The liquid crystalline behavior of the polymers is identified by optical polarizing microscopy (OPM). The degree of crystallinity of the PEAs is studied by wide-angle X-ray diffraction (WAXD) method. Typical polymers are also tested for in vitro wound scratch assay.