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New organo-soluble poly(amide-imide)s(PAIs) 8a-8f were prepared from newly synthesized 1,2-bis[4,4’-(trimellitimido) phenoxy]ethane 6 via direct polycondensation with various aromatic diamines.The diacid 6 was synthesized by the condensation reaction of 12-bis[4-atninophenoxy]ethane 4 with trimellitic anhydride 5 in acetic acid.All polymers were obtained in quantitative high yields with inherent viscosities of 0.48-0.61 dL/g.All of these polymers were highly soluble in organic solvents such as,N-methyl-2-pyrrolidone(NMP),dimethylformamide(DMF),N,N’-dimethylacetamide (DMAc) and dimethylsulfoxide(DMSO) at room temperature and were fully characterized by means of NMR spectroscopy, FTIR spectroscopy,elemental analyses,inherent viscosity,solubility test,specific rotation,differential scanning calorimetry (DSC) and thermogravimetric analysis(TGA).
New organo-soluble poly (amide-imide) s (PAIs) 8a-8f were prepared from newly synthesized 1,2-bis [4,4 ’- (trimellitimido) phenoxy] ethane 6 via direct polycondensation with various aromatic diamines. 6 was synthesized by the condensation reaction of 12-bis [4-atninophenoxy] ethane 4 with trimellitic anhydride 5 in acetic acid. All polymers were obtained in quantitative high yields with inherent viscosities of 0.48-0.61 dL / g. All of these polymers were highly soluble in organic solvents such as N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), N, N’- dimethylacetamide (DMSOc) and dimethylsulfoxide (DMSO) at room temperature and were fully characterized by means of NMR spectroscopy , FTIR spectroscopy, elemental analyzes, inherent viscosity, solubility test, specific rotation, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).