Thermal decomposition of energetic materials 12. Infrared spectral and rapid thermolysis studies of azide-containing monomers and polymers

✍ Scribed by Y. Oyumi; T.B. Brill

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 506 KB
• Volume: 65
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(86)90014-3

✦ Synopsis

The IR spectra of the monomers and homopolymers of glycidyl azide (GAP), 3-azidomethyl-3-methyloxetane (AMMO), 3,3-bis(azidomethyl)oxetane (BAMO), 3-azidooxetane (AZOX), and 3-(2,3-diazidopropoxymethyl)-3methyloxetane (DAPMMO) were assigned. Rapid-scanning Fourier transform infrared spectroscopy (10 scans s-~) was used to characterize the slow (5K min -t ) and rapid thermolysis (50-255K s -t ) of these compounds. The azide group decomposes before the polymer backbone does. However, once decomposed the products are essentially a mixture of those expected of low-membered cyclic ethers and methyl azide. The gaseous decomposition product concentrations are strikingly insensitive to the applied pressure (1-1000 psi Ar) and to the heating rate (50-255K s -t ). HCN is the dominant IR active product in all cases except for AMMO monomer, where CO is more abundant. AMMO polymer is the most thermally stable of the polymers.