THERMAL-DECOMPOSITION OF POLY-5-VINYLTETR AZOLE SODIUM-SALT

Authors
IVASHKEVICH OA LEVCHIK SV GAPONIK PN KRASITSKY VA
Citation
Oa. Ivashkevich et al., THERMAL-DECOMPOSITION OF POLY-5-VINYLTETR AZOLE SODIUM-SALT, Doklady Akademii nauk BSSR, 38(2), 1994, pp. 59-62
Citations number
11
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Doklady Akademii nauk BSSR → ACNP
ISSN journal
0002354X
Volume
38
Issue
2
Year of publication
1994
Pages
59 - 62
Database
ISI
SICI code
0002-354X(1994)38:2<59:TOPAS>2.0.ZU;2-P
Abstract
The thermal decomposition of poly-5-vinyltetrazole sodium salt studied by thermogravimetry, differential scanning calorimetry and complex th ermal analysis is found to involve two partially overlapping stages wh ich proceed after melting of polymer at 515-520 K. The first, endother mal stage, is accompanied by breaking of tetrazole ring within the tem perature range of 613-673 K and results in formation of sodium azide a nd polyacrylonitrile fragments. The second one, caused by decompositio n of sodium azide, is characterized by considerable heat evolution wit h maximum at 699 K and leads to formation of sodium and nitrogen evolu tion.