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New thermally stable polyesters based on 2,5-pyridinedicarbonyl dichloride and aromatic diols:Synthesis and characterization
Authors:Hossein Nasr Isfahania  Khalil Faghihi a Faculty of Chemistry  Shahrood University of Technology  Shahrood  Iran b Organic Polymer Chemistry Research Laboratory
Institution:a Faculty of Chemistry, Shahrood University of Technology, Shahrood, Iran;b Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, Arak University, Arak 38156, Iran
Abstract:Six new thermally stable polyesters(4a-f) were synthesized through the solution polycondensation reaction of 2,5-pyridine dicarbonyldichloride(2) with six aromatic diols in N,N'-dimethyl acetamide(DMAc) solution and in the presence of pyridine as a base.The polycondensation reactions produce a series of new polyesters(4a-f) in high yields,and inherent viscosity between 0.30 and 0.55 dL/g.The resulting polyesters were characterized by elemental analysis,viscosity measurements,thermal gravimetric analysis(TGA...
Keywords:High performance polymers  Polyesters  Pyridyl moiety
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