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Enhanced thermo-oxidative stability of polydicyclopentadiene containing covalently bound nitroxide groups

Article dans une revue avec comité de lecture
Author
NICOLAS, Clémence
203902 Institut des Molécules et Matériaux du Mans [IMMM]
HUANG, Jing
DAVID, Adelina
300022 Institut Français de Recherche pour l'Exploitation de la Mer [IFREMER]
GAC, Pierre-Yves Le
300022 Institut Français de Recherche pour l'Exploitation de la Mer [IFREMER]
MINNE, Wendy
359039 TELENE SAS
DROZDZAK, Renata
359039 TELENE SAS
RECHER, Gilles
359039 TELENE SAS
FONTAINE, Laurent
203902 Institut des Molécules et Matériaux du Mans [IMMM]
MONTEMBAULT, Véronique
203902 Institut des Molécules et Matériaux du Mans [IMMM]
ccRICHAUD, Emmanuel
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/22241
DOI
10.1016/j.polymdegradstab.2021.109765
Date
2022-01
Journal
Polymer Degradation and Stability

Abstract

The antioxidant 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) group was covalently introduced into polydicyclopentadiene (PDCPD) through ring-opening metathesis polymerization (ROMP) copolymerization of dicyclopentadiene (DCPD) with a TEMPO-derived norbornene comonomer. The thermal oxidation of the resulting thin films was monitored by ThermoGravimetric Analyses (TGA) and Fourier-Transform Infra-Red spectroscopy (FT-IR). This new PDCPD stabilized by immobilization of the TEMPO antioxidant shows a better thermo-oxidative stability at 60 °C under air than an industrial formulation of PDCPD stabilized with 2,6-di‑tert‑butyl‑4-methylphenol (BHT). Impact of thermal oxidation on mechanical behaviour of both formulations have been studied by tensile tests and fracture tests, based on the essential work of fracture (EWF) concept. The TEMPO-functionalized PDCPD offers a promising alternative to BHT-stabilized PDCPD with comparable ductility but slower decay and better cracking resistance, confirming the benefit of the TEMPO antioxidant in PDCPD formulation when chemically bound to the matrix.

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