M. Hajibeygi, K. Faghihi, M. Shabanian
Sep 5, 2011
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0
Influential Citations
17
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Journal
Journal of Applied Polymer Science
Abstract
A new-type of dicarboxylic acid was synthesized from the reaction of 2,5-bis(4-aminobenzylidene)cyclopentanone with trimellitic anhydride in a solution of glacial acetic acid/pyridine (Py) at refluxing temperature. Six novel heat resistance poly(amide-imide)s (PAIs) with good inherent viscosities were synthesized, from the direct polycondensation reaction of N,N′-[2,5-bis(4-aminobenzylidene)cyclopentanone]bistrimellitimide acid with several aromatic diamines, by two different methods such as direct polycondensation in a medium consisting of N-methyl-2-pyrrolidone (NMP)/triphenyl phosphite (TPP)/calcium chloride (CaCl2)/pyridine (Py) and direct polycondensation in a p-toluene sulfonyl chloride (tosyl chloride, TsCl)/pyridine (Py)/N,N-dimethylformamide (DMF) system. All of the above polymers were fully characterized by 1H NMR, FTIR, elemental analysis, inherent viscosity, solubility tests, UV-vis spectroscopy, differential scanning calorimeter (DSC), thermogravimetric analysis (TGA), and derivative of thermaogravimetric (DTG). The resulted poly(amide-imide)s (PAIs) have showed admirable good inherent viscosities, thermal stability, and solubility. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011