Preparation and Characterization of a Bisbenzimidazopyrazine Polymer

Abstract

A bisbenzimidazopyrazine polymer was prepared by the melt and solution of 2,2'-bis(carbophenoxy)-5,5'-bibenzimidazole. A maximum inherent viscosity of 0.62 in methane sulfonic acid was obtained. Polymer structure was verified by elemental and infrared analysis. The polymer was an orange-brown amorphous powder which did not soften up to 450C. Onset of breakdown during thermogravimetric analysis in a nitrogen atmosphere occurred at 475-500C.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1970
Accession Number
AD0871648

Entities

People

  • Robert C. Evers

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Acids
  • Air Force
  • Alcohols
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Hot Water
  • Hydroxides
  • Infrared Spectra
  • Materials
  • Materials Laboratories
  • Organic Chemistry
  • Physical Properties
  • Spectra
  • Sulfonic Acids
  • Thermal Stability
  • Viscosity

Fields of Study

  • Chemistry

Readers

  • Analytical Chemistry
  • Mechanical Engineering/Mechanics of Materials.
  • Surface Engineering/Surface Coating Technology.