The thermal degradations of oligo-isobutylenes having oxygen-containing end groups

Autor:	Sh.A. Nasybullin, A.V. Dyul'deva, I.N. Faizullin, I.N. Zaripov, F.G. Bikmukhametova
Rok vydání:	1981
Předmět:	Exothermic reaction Fragmentation (mass spectrometry) Bond strength Chemistry Polymer chemistry General Engineering Liberation chemistry.chemical_element Organic chemistry Hydrogen atom abstraction Decomposition Oxygen Macromolecule
Zdroj:	Polymer Science U.S.S.R.. 23:349-358
ISSN:	0032-3950
DOI:	10.1016/0032-3950(81)90175-1
Popis:	A comparative study has been made of the thermal degradations of oligo-isobutylenes having carboxyl or ketonic end groups with that of polyisobutylene as model. The oligo-isobutylenes have found less heat-resistant owing to their content of unstable low mol. wt. fractions, the lower CC bond strength adjacent to the end groups, and to an exothermic chain-transfer reaction at the carboxyl group, in which hydrogen abstraction is coupled with fragmentation and CO 2 liberation, which is followed by a macromolecular decomposition from the chain ends.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6b45853a23a8fafdb2925581076fa209 https://doi.org/10.1016/0032-3950(81)90175-1 Zobrazit plný text záznamu