Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/1822

TitleLaurolactam as a stabilizer against the thermo-oxidative degradation of poly(ether-ester)
Author(s)Botelho, Gabriela
Gijsman, P.
Machado, A. V.
Queirós, Arlete
KeywordsPoly(ether-esters)
Stabilization
Thermo-oxidative degradation
Laurolactam
Issue dateSep-2004
PublisherElsevier
JournalPolymer Degradation and Stability
Citation"Polymer degradation and stability". 85:3 (2004) 991-995.
Abstract(s)In this study we examined the influence of laurolactam on the thermo-oxidative degradation of a copolymer of poly(butylene terephthalate) and polybutylene glycol and of di(ethyleneglycol) dibenzoate, used as model compound. The degradation was followed by measurement of the oxygen uptake, FTIR and 1H-NMR spectroscopy and measurement of the intrinsic viscosity changes during degradation. A stabilizing effect of laurolactam on the thermo-oxidative degradation could be observed, as an induction time was defined in which hydroperoxides were not formed and molecular weight was kept constant. After this period the oxygen uptake, hydroperoxide formation and polymer conversion increased more slowly.
TypeArticle
URIhttp://hdl.handle.net/1822/1822
DOI10.1016/j.polymdegradstab.2003.04.006
ISSN0141-3910
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CDQuim - Artigos (Papers)
IPC - Artigos em revistas científicas internacionais com arbitragem

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