PBT plasticity loss induced by oxidative and hydrolysis ageing
TypeArticles dans des revues avec comité de lecture
This paper reports the study of embrittlement of PBT submitted either to thermal or hydrolytic ageing. All changes were followed up by tensile tests, rheometry in molten state and gel permeation chromatography for molar mass changes, SAXS and DSC experiments for crystallinity changes. Both kind of ageing were shown to induce predominant chain scissions with moderate crystallinity increase, in great part due to annealing. The combination of all results were used to establish a Mw - χc embrittlement window helping for a determination of an end of life criterion.
Files in this item
Showing items related by title, author, creator and subject.
DEFAUCHY, Virginie; LE GAC, Pierre Yves; GUINAULT, Alain; VERDU, Jacques; RECHER, Gilles; DROZDZAK, Renata; RICHAUD, Emmanuel (Elsevier, 2017)The in situ thermal oxidation of thin unstabilized polydicyclopentadiene was studied by TGA to monitor mass gain, and DSC to characterize hydroperoxides concentration. Results were discussed using kinetic analysis, which ...
HUANG, Jing; MINNE, Wendy; DROZDZAK, Renata; RECHER, Gilles; LE GAC, Pierre Yves; RICHAUD, Emmanuel (ELSEVIER, 2020)Thin unstabilized PDCPD film were thermally oxidized in ovens at several temperatures ranging from 50 °C to 120 °C. Hydroperoxide concentration was monitored by DSC. It was observed that hydroperoxides concentration reaches ...
HUANG, Jing; RICHAUD, Emmanuel; LE GAC, Pierre-Yves; DAVID, Adelina; DROZDZAK, Renata; GILLES, Recher (Elsevier, 2020)Polydicyclopentadiene (PDCPD) is a thermoset polymer synthetized from Ring Opening Metathesis Polymerization and produced by Reaction Injection Moulding process. Due to its interesting properties, like short processing ...
ROMP of novel hindered phenol-functionalized norbornenes and preliminary evaluation as stabilizing agents† NICOLAS, Clémence; HUANG, Jing; RICHAUD, Emmanuel; MINNE, Wendy; DROZDZAK, Renata; RECHER, Gilles; FONTAINE, Laurent; MONTEMBAULT, Véronique (Elsevier, 2021)A series of new norbornene monomers containing sterically hindered phenol groups have been synthesized and polymerized via ring-opening metathesis polymerization (ROMP) using the Grubbs 3rd generation catalyst (G3’). ROMPs ...
DIANI, Julie; FREDY, Carole; GILORMINI, Pierre; MERCKEL, Yannick; REGNIER, Gilles; ROUSSEAU, Ingrid (Elsevier, 2011)A torsion device was designed and built for testing the shape fixity and shape recovery of shape memory polymers at large deformation. A simple thermal chamber was used to regulate the thermal environment during testing ...