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|Title:||Laurolactam as a stabilizer against the thermo-oxidative degradation of poly(ether-ester)|
Machado, A. V.
|Journal:||Polymer 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.|
|Appears in Collections:||CDQuim - Artigos (Papers)|
IPC - Artigos em revistas científicas internacionais com arbitragem