Synthesis and characterization of polyamideimides from diaminobenzophenone-3,3′ ,4,4′ -tetracarboxylic diimides and aromatic dicarboxylic acid— terephthalic acid (TPA)
Journal Title: International journal of Emerging Trends in Science and Technology - Year 2016, Vol 3, Issue 6
Abstract
Four polyamideimides have been synthesized by direct polycondensation of imide containing diamines with dicarboxylic acid- terephthalic (TPA). The diimide-diamines were synthesized from benzophenone-3,3′ ,4,4′ - tetracarboxylic dianhydride with aromatic diamines — p-phenylene diamine(5a); benzidine(5b); 4,4′ - diaminodiphenylmethane (5c) and 4,4’- diaminodiphenylsulphone(5d) respectively .The polycondensation reaction were done using triphenylphosphite(TPP)/pyridine(Py) in N-methyl-2-pyrrolidone(NMP) in the presence of calcium chloride and lithium chloride via. Phosphorylation method. The polyamideimides have been characterized by IR and 1H NMR spectroscopy and elemental analysis. The solubility and intrinsic viscosity of the polymers have been determined. Thermal stability of the polymers was checked by thermogravimetric analysis (TGA) and differential thermogravimetric analysis (DTG).
Authors and Affiliations
Saswati Phookan
Keywords
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