TY - JOUR T1 - Accelerated ageing and lifetime prediction of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in distilled water A1 - Deroine,Morgan A1 - Le Duigou,Antoine A1 - Corre,Yves-Marie A1 - Le Gac,Pierre-Yves A1 - Davies,Peter A1 - Cesar,Guy A1 - Bruzaud,Stephane AD - Univ Bretagne Sud, LIMATB, EA 4250, F-56100 Lorient, France. AD - IFREMER, Ctr Bretagne, Marine Struct Grp, F-29280 Plouzane, France. AD - Univ Bretagne Sud, SERPBIO, F-56321 Lorient, France. UR - https://doi.org/10.1016/j.polymertesting.2014.07.018 DO - 10.1016/j.polymertesting.2014.07.018 KW - Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) KW - Accelerated ageing KW - Hydrothermal degradation KW - Lifetime prediction N2 - 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. Y1 - 2014/10 PB - Elsevier Sci Ltd JF - Polymer Testing SN - 0142-9418 VL - 39 SP - 70 EP - 78 ID - 31396 ER -