Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (2): 355.

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Synthesis, Characterization and Property of Poly(aryl ether amides) from 2-(4-Aminophenyl)-4-(3-methyl-4-aminophenoxy)-2,3-phthalazinone

ZHU Xiu-Ling, JIAN Xi-Gao, LU Ye, WANG Rui-Ling, ZHANG Yuan-Hong   

  1. Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012, China
  • Received:2001-10-15 Online:2003-02-24 Published:2003-02-24

Abstract: A novel aromatic diamine 2-(4-aminophenyl)-4-(3-methyl-4-aminophenoxy)-2,3-phthalazinone-1(1, DAMPP) containing aza heterocycle was synthesized in a higher yield starting from 4-(3-methyl-4-hydroxyphenyl)-2,3-phthalazinone-1(OM-HPPZ) via two steps conveniently. Diamine 1 polymerized with three aryl dicarboxylic acids to prepare a series of new aromatic polyamides in a high yield using Yamazaki phosphorylation method. The synthesized polymer has a high molecular weight with the inherent viscosity in the range of 0.40-0.60 dL/g. They exhibited high glass transition temperatures of 598-620 K and good thermostable properties with the 10% weight loss temperature above 673 K(in nitrogen). The range of their surface resistance coefficients is 5.89×1015-9.87×1015 Ω and the range of volume resistance coefficients is 1.39×1016-4.09×1016 Ω·cm. These polymers were readily soluble in polar solvents such as NMP, DMF and m-cresol etc, clear tough films were cast from their DMAc solutions. The structures of diamine 1 and polymers obtained was confirmed by MS, FTIR and 1HNMR, which are consistent with the designed structure.

Key words: Poly(aryl amide), Heterocyclic polymer, Phthalazinone, Solubility

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