Paper Information

Journal:   JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)   December 2004 , Volume 1 , Number 2; Page(s) 141 To 151.
 
Paper: 

SYNTHESIS AND CHARACTERIZATION OF NEW AROMATIC POLY(AMIDE-IMIDE)S DERIVED FROM BIS(3-TRIMELLITIMIDOPHENYL) PHENYL PHOSPHINE OXIDE AND VARIOUS AROMATIC DIAMINES

 
 
Author(s):  BANI HASHEMI A., TAMAMI B., ABD ALMALEKI A.
 
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Abstract: 
New aromatic poly(amide-imide)s with high inherent viscosities were prepared by direct polycondensation reaction of diimide-diacid (I) and aromatic diamines using triphenyl phosphite in N-methyl-2-pyrrolidone (NMP)/pyridine solution containing dissolved CaCl2. The bis(3-trimellitimidophenyl) phenyl phosphine oxide (I) was readily obtained by the condensation reaction of bis(3-aminophenyl) phenyl phosphine oxide (BAPPO) with trimellitic anhydride. The resulting poly(amide-imide)s showed high thermostability. Their decomposition temperatures at 10% weight loss in nitrogen atmosphere were above 532 C and the anaerobic char yield at 800 C ranged from 56% to 74%. Almost all the poly(amide-imide)s showed high glass transition temperature above 233 C by differential scanning calorimetry (DSC) measurements. These polymers were readily soluble in various organic solvents and by their casting into transparent, tough and flexible films can be easily achieved.
 
Keyword(s): AROMATIC POLY(AMIDE-IMIDE)S, POLYCONDENSATION, CHARACTERIZATION, THERMOSTABILITY
 
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