Author/Authors :
Patel, Hemant S. Veer Narmad South Gujarat University. - Department of Chemistry, India. , Patel, Naitik B. Veer Narmad South Gujarat University. - Department of Chemistry, India. , Patel, Keshav C. Veer Narmad South Gujarat University. - Department of Chemistry, India.
Abstract :
Ten copolyesters were synthesized by high temperature polycondensation of 2-(Nethylanilino)-4,6-bis(phenoxy-2-carbonyl chloride)-s-triazine [EAPCCT] with each of the following mixtures of diols: [Bisphenol-A(BPA)+Bisphenol-C(BPC)], [BPA+Bisphenol-S(BPS)], [BPA+Phenolphthalein(Ph)], [BPA+1,8-dihydroxyl anthraquinone(DHA-1,8)], [BPA+1,4-dihydroxy anthraquinone(DHA-1,4)], [BPA+catechol(C)], [BPA+resorcinol(R)], [BPC+Ph], [BPC+R], and [Ph+DHA-1 ,4]. All the copolyesters were characterized by solubility, density, and viscosity measurements, IR and NMR spectroscopy, and thermogravimetric analysis method. All the copolyesters were soluble at high temperature in acetone, dimethylformamide, dimethylsulphoxide, dimethylacetamide, etc. and have reduced viscosity in the range of 0.539-0.678 dUg in dimethylformamide at 30°C. Copolyester derived from the diol mixture [BPA+DHA-1,4] showed the greater thermal stability than the other copolyesters.
Keywords :
copolyesters , 2 , (N , ethyl anilino) , 4 , 6 , bis(phenoxy2 , carbonyl chloride) , s , triazine , high temperature polycondensation , viscosity terminations , IR spectroscopy.
