FN Archimer Export Format
PT J
TI Hydrolytic kinetic model predicting embrittlement in thermoplastic elastomers
BT 
AF Bardin, Antoine
   Le Gac, Pierre Yves
   Cérantola, Stéphane
   Simon, Gaelle
   Bindi, Hervé
   Fayolle, B.
AS 1:1,3,4;2:1;3:2;4:2;5:3;6:4;
FF 1:;2:PDG-REM-RDT-LCSM;3:;4:;5:;6:;
C1 Marine Structure Laboratory, IFREMER, Centre de Bretagne, 29280, Plouzané, France
   Plateforme RMN-RPE, UFR Sciences et Techniques, University of Western Brittany, 6 Av. V. Le Gorgeu CS93837, 29238, Brest Cedex 3, France
   Thales DMS France, 525 route des Dolines, 06560, Valbonne, France
   PIMM Laboratory, Arts et Métiers ParisTech, CNRS, Cnam, HESAM Université, 151 boulevard de l'Hôpital, 75013, Paris, France
C2 IFREMER, FRANCE
   UBO, FRANCE
   THALES, FRANCE
   ENSAM, FRANCE
SI BREST
SE PDG-REM-RDT-LCSM
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
IF 5.03
TC 18
UR https://archimer.ifremer.fr/doc/00588/70044/67978.pdf
LA English
DT Article
DE ;Thermoplastic elastomer;Hydrolysis;Kinetic model;Structure-property relationships
AB A hydrolytic kinetic model predicting chains scissions of a polyurethane elastomer (TPU) containing an anti-hydrolysis agent (stabilization via carbodiimide) was developed. This model is based on four components: uncatalysed hydrolysis, acid-catalysed hydrolysis, carboxylic acid dissociation and competitive carbodiimide-based deactivation of acid. Protons were considered as the key catalyst responsible for the hydrolysis. Model parameters were determined by fitting experimental data measured on unstabilized and stabilized TPUs, aged in immersion from 40 to 90 °C. Scission kinetics were predicted for immersion and 50% relative humidity conditions, from 10 to 100 °C. Structure-failure property relationships were also investigated, between molar mass and elongation at break. A master curve was established for elongation at break with molar mass, including both TPUs at four ageing temperatures. By combining predictions for scission kinetics with the molar mass-elongation at break master curve and an embrittlement molar mass as the end-of-life criterion, non-Arrhenian lifetime predictions are proposed for all exposure conditions considered. 
PY 2020
PD JAN
SO Polymer Degradation And Stability
SN 0141-3910
PU Elsevier BV
VL 171
UT 000509622300016
DI 10.1016/j.polymdegradstab.2019.109002
ID 70044
ER

EF