Synthesis and properties of novel aromatic polyimides derived from bis(p-aminophenoxy)methylphenylsilane

Der Jang Liaw*, Wen Chung Ou Yang, Lain Jong Li, Mei Hui Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A novel siloxane-containing diamine, bis(p-aminophenoxy)methylphenylsilane (BAMPS), was synthesized from the condensation of dichloromethylphenylsilane with p-aminophenol in the presence of triethylamine. A series of BAMPS-based aromatic polyimides were prepared from BAMPS and various aromatic tetracarboxylic dianhydrides by the usual two-step procedure including ring-opening polyaddition to poly(amic acid)s and subsequent cyclodehydration to polyimides. The inherent viscosities of poly(amic acid)s IIIa-IIIf ranged from 0.09 to 0.36 dL g-1 in N,N-dimethylacetamide at a concentration of 0.5 g dL-1 at 30°C. The inherent viscosities of polyimides were between 0.06 and 0.32 dL g-1 in various solvents at 30°C. Polyimides, especially IVc and IVb were soluble in a wide range of organic solvents such as N-methyl-2-pyrrolidinone, concentrated H2SO4. N.N-dimethylacetamide, N.N-dimethylfomamide, and dimethyl sulfoxide. The polyimides were characterized by elementary analysis, IR spectra. TGA, and DSC. They also had glass transition temperatures ranging from 128 to 181°C. The 10% mass loas temperature was recorded in the range of 404-443°C in nitrogen and of 315-339°C in oxygen.

Original languageEnglish (US)
Pages (from-to)369-376
Number of pages8
JournalJournal of Applied Polymer Science
Volume63
Issue number3
DOIs
StatePublished - Jan 18 1997

ASJC Scopus subject areas

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

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