Synthesis and characterization of hyperbranched aromatic poly(ether imide)s with terminal amino groups

Yao Te Chang, Ching Fong Shu*, Chyi Ming Leu, Kung-Hwa Wei

*Corresponding author for this work

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

We synthesized an AB2-type monomer, 4-[4-[di(4-aminophenyl)methyl]-phenoxy}phthalic acid, which contained one phthalic acid group and two aminophenyl functionalities. The direct self-polycondensation of the AB2-type monomer in the presence of triphenylphosphite as an activator afforded a hyperbranched poly(ether imide) with a large number of terminal amino groups. This polymer was characterized with 1H NMR and IR spectroscopy. The degree of branching of the hyperbranched poly(ether imide) was approximately 56%, as determined by a combination of model compound studies and an analysis of 1H NMR spectroscopy integration data. The terminal amino groups underwent functionalization readily. The solubility and thermal properties of the resulting polymers depended on the nature of the chain end groups. In addition, the hyperbranched poly(ether imide) was grafted with polyhedral oligomeric silsesquioxane (POSS). Transmission electron microscopy analysis revealed that the grafted POSS molecules aggregated to form a nanocomposite material.

Original languageEnglish
Pages (from-to)3726-3735
Number of pages10
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume41
Issue number23
DOIs
StatePublished - 1 Dec 2003

Keywords

  • AB monomer
  • Degree of branching
  • Hyperbranched
  • Nanocomposites
  • Poly(ether imide)
  • TEM

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