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

Type Article
Date 2022-01
Language English
Author(s) Nicolas Clémence1, Huang Jing2, Richaud Emmanuel2, David Adelina3, Le Gac Pierre YvesORCID3, Minne Wendy4, Drozdzak Renata4, Recher Gilles4, Fontaine Laurent1, Montembault Véronique1
Affiliation(s) 1 : Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS – Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
2 : Laboratoire PIMM, Arts et Metiers Institute of Technology, CNRS, CNAM, HESAM Université, 151 boulevard de l'Hôpital, F-75013, Paris, France
3 : IFREMER, Service Matériaux et Structures, Centre de Brest BP70, F-29280, Plouzané, France
4 : TELENE SAS, 2 rue Marie Curie, 59910 Bondues, France
Source Polymer Degradation And Stability (0141-3910) (Elsevier BV), 2022-01 , Vol. 195 , P. 109765 (6p.)
DOI 10.1016/j.polymdegradstab.2021.109765
Keyword(s) Polydicyclopentadiene, Nitroxide radical-containing norbornene, Ring-opening metathesis polymerization (ROMP), Thermo-oxidative ageing, Mechanical properties

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 behavior 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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Nicolas Clémence, Huang Jing, Richaud Emmanuel, David Adelina, Le Gac Pierre Yves, Minne Wendy, Drozdzak Renata, Recher Gilles, Fontaine Laurent, Montembault Véronique (2022). Enhanced thermo-oxidative stability of polydicyclopentadiene containing covalently bound nitroxide groups. Polymer Degradation And Stability, 195, 109765 (6p.). Publisher's official version : https://doi.org/10.1016/j.polymdegradstab.2021.109765 , Open Access version : https://archimer.ifremer.fr/doc/00733/84455/