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Provedor de dados:  ArchiMer
País:  France
Título:  Accelerated ageing and lifetime prediction of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in distilled water
Autores:  Deroine, Morgan
Le Duigou, Antoine
Corre, Yves-marie
Le Gac, Pierre-yves
Davies, Peter
Cesar, Guy
Bruzaud, Stephane
Data:  2014-10
Ano:  2014
Palavras-chave:  Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)
Accelerated ageing
Hydrothermal degradation
Lifetime prediction
Resumo:  Accelerated ageing was performed in distilled water at different temperatures (25, 30, 40 and 50°C) on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), which is a biodegradable biopolymer, in order to estimate its lifetime in aqueous environment. In a first part, degradation mechanisms were followed by gravimetry, tensile tests and steric exclusion chromatography. Both immersion and relative humidity have been examined. In a second part, the strain at break was used as an indicator for lifetime prediction with an Arrhenius extrapolation. The study revealed the presence of only one irreversible degradation mechanism, i.e. hydrolytic degradation, which is temperature dependant. So, within the approach assumptions, the lifetime in distilled water of PHBV following Arrhenius behaviour can be predicted.
Tipo:  Text
Idioma:  Inglês

Editor:  Elsevier Sci Ltd
Formato:  application/pdf
Fonte:  Polymer Testing (0142-9418) (Elsevier Sci Ltd), 2014-10 , Vol. 39 , P. 70-78
Direitos:  2014 Elsevier Ltd. All rights reserved


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