A novel high-temperature naphthyl-based phthalonitrile polymer: Synthesis and properties

Fenghua Zhao, Ruojin Liu, Chao Kang, Xiaoyan Yu, Kimiyoshi Naito, Xiongwei Qu, Qingxin Zhang

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)


A novel naphthyl-based phthalonitrile monomer, 1,6-bis(3,4-dicyanophenoxy) naphthalene (1,6-BDCN), was prepared, and the phthalonitrile resin was cured with 4,4′-diaminodiphenyl ether (ODA) via two steps, namely, preparation of prepolymer and postcuring prepolymer at elevated temperatures. The 1,6-BDCN polymer might form triazine and phthalocyanine rings as demonstrated by FTIR spectra. The prepolymer shows fine solubility in organic solvents. The 1,6-BDCN polymer exhibits excellent structural integrity and superior thermal stability as indicated by thermogravimetric analysis (TGA). Dynamic mechanical analysis (DMA) revealed that the phthalonitrile resin has a high storage modulus and glass transition temperature (Tg). The water uptake is about 3% by weight after submersion in boiling water for 50 hours. The influence of curing processes on thermal stability and flame retardancy was also explored.

Original languageEnglish
Pages (from-to)8383-8390
Number of pages8
JournalRSC Advances
Issue number16
Publication statusPublished - 2014
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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