A Novel synthesis method for the preparation of aromatic poly(imide benzoxazole) from trimellitic anhydride chloride and bis(o-aminophenol)

Steve Lien Chung Hsu, Keng Chuan Chang, Yuan Pin Huang, Shih Jung Tsai

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11 Citations (Scopus)

Abstract

A poly(imide benzoxazole) was prepared directly from trimellitic anhydride chloride and 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (BisAPAF) monomers in a two-step method. In the first step, a poly(hydroxyamide amic acid) precursor was synthesized by the low-temperature solution polymerization in an organic solvent. Subsequently, thermal cyclodehydration of the poly(hydroxyamide amic acid) precursor at 350°C produced the corresponding poly(imide benzoxazole). The inherent viscosity of the precursor polymer was 0.22 dL/g. The cyclized poly(imide benzoxazole) showed a glass transition temperature (Tg) at 329°C and a 5% weight loss temperature at 530°C in nitrogen and at 525°C in air. The poly(imide benzoxazole) is amorphous as evidenced by the wide-angle X-ray diffraction measurement. The structures of the precursor polymer and the fully cyclized polymer were characterized by Fourier transform infrared (FTIR) and proton nuclear magnetic resonance spectroscopy (1H NMR).

Original languageEnglish
Pages (from-to)2388-2391
Number of pages4
JournalJournal of Applied Polymer Science
Volume88
Issue number10
DOIs
Publication statusPublished - 2003 Jun 6

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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