Characterization of Interphases Between PMDA/4-BDAF Polyimides and Silver Substrates Using Surface-Enhanced Raman Scattering and Reflection- Absorption Infrared Spectroscopy

Abstract

Surface-enhanced Raman scattering (SERS) and reflection-absorption infrared spectroscopy (RAIR) were used to determine the molecular structure of interphases formed by curing the polyamic acid of pyromellitic dianhydride (PMDA) and 2,2-BIS(4-(4-aminophenoxy)-phenyl)-hexafluoropropane (4-BDAF) against silver substrates. SERS spectra of the cured polymer were more simular to the SERS spectra of the polyamic acid than to the normal Raman spectrum of the polymide, indicating that curing of the polymer was inhibited by interaction of the polyamic acid with the substrate. Thus, the strongest band in the normal RAMAN spectrum of the polymide was near 1406 cm-1 and was assigned to the CNC axial stretching mode.

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Document Details

Document Type
Technical Report
Publication Date
Mar 15, 1990
Accession Number
ADA233531

Entities

People

  • F. James Boerio
  • W. H. Tsai

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Anhydrides
  • Chemical Synthesis
  • Chemistry
  • Classification
  • Composite Materials
  • Films
  • Infrared Spectra
  • Materials
  • Materials Science
  • Raman Scattering
  • Raman Spectra
  • Raman Spectroscopy
  • Scattering
  • Spectra
  • Spectroscopy
  • Substrates
  • Thin Films

Readers

  • Materials Science and Engineering.
  • Nanoscale Plasmonic Nanotechnology
  • Polymer Science and Engineering.