FN Archimer Export Format PT J TI Accelerated ageing and lifetime prediction of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in distilled water BT AF DEROINE, Morgan LE DUIGOU, Antoine CORRE, Yves-Marie LE GAC, Pierre-Yves DAVIES, Peter CESAR, Guy BRUZAUD, Stephane AS 1:1;2:1;3:1;4:2;5:2;6:3;7:1; FF 1:;2:;3:;4:PDG-REM-RDT-LCSM;5:PDG-REM-RDT-LCSM;6:;7:; C1 Univ Bretagne Sud, LIMATB, EA 4250, F-56100 Lorient, France. IFREMER, Ctr Bretagne, Marine Struct Grp, F-29280 Plouzane, France. Univ Bretagne Sud, SERPBIO, F-56321 Lorient, France. C2 UBS, FRANCE IFREMER, FRANCE UBS, FRANCE SI BREST SE PDG-REM-RDT-LCSM IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 2.24 TC 42 UR https://archimer.ifremer.fr/doc/00203/31396/29785.pdf LA English DT Article DE ;Poly(3-hydroxybutyrate-co-3-hydroxyvalerate);Accelerated ageing;Hydrothermal degradation;Lifetime prediction AB 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. PY 2014 PD OCT SO Polymer Testing SN 0142-9418 PU Elsevier Sci Ltd VL 39 UT 000343384100011 BP 70 EP 78 DI 10.1016/j.polymertesting.2014.07.018 ID 31396 ER EF