Thermooxidation of lactam-based polyamides with amino end-groups. Thermooxidation of hexano-6-lactam and decomposition of 6-hydroperoxyhexano-6-lactam in the presence of primary amines

Autor:	D. Doskočilová, Josef Rychlý, Božena Lánská, Lyda Matisová-Rychlá, Rudolf Puffr
Rok vydání:	1999
Předmět:	chemistry.chemical_classification Aldimine Reaction mechanism Polymers and Plastics Chemistry Singlet oxygen Condensed Matter Physics Homolysis End-group chemistry.chemical_compound Polymerization Mechanics of Materials Amide polycyclic compounds Materials Chemistry Lactam Organic chemistry
Zdroj:	Polymer Degradation and Stability. 63:469-479
ISSN:	0141-3910
DOI:	10.1016/s0141-3910(98)00076-7
Popis:	Oxygen consumption, reaction products and chemiluminescence in the course of the thermooxidation of hexano-6-lactam melt in the presence of primary amines as well as thermooxidation of lactam-based polyamides with amino end-groups were studied. Amines induce the homolysis of amide hydroperoxides, primary products of the chain oxidation of lactams, and react with aldehydes originating from hydroperoxide homolysis. By condensation of amines with aldehydes, aldimines are produced together with singlet oxygen, the initiator of N-alkylamide oxidation. In polylactams prepared by hydrolytic polymerization, the carboxylic and amino end-groups are associated and their effect on polymer thermooxidation is thus suppressed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3ad355360e605cb8e890b0d0efa6c936 https://doi.org/10.1016/s0141-3910(98)00076-7 Zobrazit plný text záznamu Full Text from ScienceDirect