Electron Spin Resonance Studies of Free Radicals in Energetic Materials.

Abstract

Chemical reactions between fracture-induced free radicals in nylon 6 and energetic materials were explored. It was determined that picric acid (2,4,6-trinitrophenol) and nitrobenzene reacted with initial nylon 6 mechano-radicals but not with secondary nylon 6 radicals. Upon UV irradiation triaminotrinitrobenzene (TATB) forms free radicals which are thermally stable to at least 220 C. At 300 C they decay with a half-life of 20 minutes to a second radical having a half-life of ca 55 minutes at 300 C. The ESR spectrum of each radical consists of a single line lacking discernible splitting. The structures of these radicals have not yet been established. The radicals generated by irradiation of nitroguanidine, and by irradiation, grinding and impact of HMX in polymeric binders were examined by ESR at several temperatures. The radiation sources were variously UV, electron beams, and gamma rays. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1978
Accession Number
ADA062287

Entities

People

  • A. D. Britt
  • W. B. Moniz

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Electron Beams
  • Electron Spin Resonance
  • Energetic Materials
  • Fibers
  • Free Radicals
  • Insensitive Explosives
  • Jet Propulsion
  • Materials
  • Military Research
  • Munitions
  • Picric Acid
  • Resonance
  • Spin Resonance

Readers

  • Agricultural Chemistry/Soil Science
  • Organic Chemistry
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Directed Energy
  • Microelectronics