Thermal oxidation of polydicyclopentadiene - Changes in water absorption
TypeArticles dans des revues avec comité de lecture
This paper describes water absorption in polydicyclopentadiene (PDCPD) and more specially the impact of thermal oxidation on its behavior. Unaged PDCPD is found to be almost hydrophobic consistently with its non-polar structure. During thermal oxidation, hydrophilicity progressively increases with ageing time. This increase is linked with the buildup of polar products (mainly ketones, carboxylic acids, hydroperoxides, alcohols). Moreover, it appears that water absorption in PDCPD obeys to Flory Huggins law for all conditions considered here. In the meantime, water diffusivity seems to decrease when oxidation level increases. Finally, a mastercurve that links carbonyl concentration, water diffusivity and water-polymer interaction parameter is proposed and allows changes of water resistance of PDCPD to be predicted.
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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 ...
Impact of thermal oxidation on mechanical behavior of polydicylopentadiene: Case of non-diffusion limited oxidation DAVID, Adelina; HUANG, Jing; RICHAUD, Emmanuel; YVES LE GAC, Pierre (ELSEVIER, 2020)Impact of thermal oxidation on mechanical behavior of polydicyclopentadiene (pDCPD) is studied in this paper. Thermal oxidation is performed over a wide range of ageing temperature, from 20 °C to 120 °C using 60 μm thin ...
HUANG, Jing; DAVID, Adelina; LE GAC, Pierre-Yves; LORTHIOIR, Cédric; COELHO, Cristina; RICHAUD, Emmanuel (Elsevier Ltd, 2019)This paper reports chemical changes that occur in polydicyclopentadiene during thermal oxidation at several temperatures and oxygen pressures. A particular attention was paid to the double bond consumption since these ...
RICHAUD, Emmanuel; LE GAC, Pierre Yves; VERDU, Jacques; LE GAC, Pierre Yves (Elsevier, 2014)Thermal aging of thin ﬁlms of unstabilized polydicyclopentadiene (pDCPD) at several temperatures ranging from 120 to 30 C was investigated by means of carbonyl build up by FTIR with ammonia derivatization, double bond ...