The thermal and thermo-oxidative degradation of poly(tetrahydrofuran) and its complexes with LiBr and LiI

Autor:	Luigi Costa, G. Gordon Cameron, Maria Paola Luda, M.Y. Qureshi
Rok vydání:	2000
Předmět:	Thermal oxidation Reaction mechanism Polymers and Plastics Ethylene oxide Radical Inorganic chemistry Condensed Matter Physics Homolysis chemistry.chemical_compound chemistry Mechanics of Materials Polymer chemistry Materials Chemistry Thermal stability Chemical decomposition Tetrahydrofuran
Zdroj:	Polymer Degradation and Stability. 67:527-533
ISSN:	0141-3910
DOI:	10.1016/s0141-3910(99)00154-8
Popis:	The thermal degradation of poly(tetrahydrofuran) (PTHF) shows many features in common with its homologues poly(ethylene oxide) (PEO) and poly(trimethylene oxide), the main degradation processes being accounted for by homolysis of the C–O backbone bonds followed by further reactions of the radicals thus formed. The thermal stability of PTHF and its complexes with LiBr and LiI are in the order PTHF>PTHF/LiBr>>PTHF/LiI. The marked instability of the LiI complex is due in part to participation of I° radicals in promoting decomposition reactions. Pure PTHF is much less stable in air than in N2 while the stabilities of the complexes in air are similar to their stabilities under N2, so that the order of stability to thermal oxidation is PTHF
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dc4642be2bc23b7df4e3cbf2cf694a10 https://doi.org/10.1016/s0141-3910(99)00154-8 Zobrazit plný text záznamu Full Text from ScienceDirect