Nitroxide radical-containing polynorbornenes by ring-opening metathesis polymerization as stabilizing agents for polyolefins

A series of original 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-containing dicarboximide norbornene monomers have been synthesized and polymerized via ring-opening metathesis polymerization (ROMP) using the Grubbs 3 rd generation catalyst. First-order kinetics and linear evolutions of the molar ma...

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Bibliographic Details
Published in:Polymer chemistry 2019-10, Vol.1 (4), p.5487-5497
Main Authors: Nicolas, Clémence, Fontaine, Laurent, Montembault, Véronique
Format: Article
Language:English
Subjects:
Anchors
Chemical Sciences
Metathesis
Monomers
Organic chemistry
Oxidation
Polymer chemistry
Polymerization
Polymers
Polynorbornene
Polyolefins
Reaction kinetics
Stabilizers (agents)
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Summary:A series of original 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-containing dicarboximide norbornene monomers have been synthesized and polymerized via ring-opening metathesis polymerization (ROMP) using the Grubbs 3 rd generation catalyst. First-order kinetics and linear evolutions of the molar mass with monomer conversion were obtained together with decreasing dispersity ( ) down to 1.05-1.15. The rate of polymerization decreased with increasing alkyl chain length and an amide anchor group bound to the TEMPO functionality. Well-controlled TEMPO-containing polynorbornenes were prepared with a monomer to initiator ratio up to 1000, resulting in polymers with a high density in radical sites uniformly distributed along the backbone. These TEMPO-containing polynorbornenes have shown to be efficient as stabilizing agents in polypropylene, through onset oxidation temperature (OOT) measurements. A series of original 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-containing dicarboximide norbornene monomers have been synthesized and polymerized via ring-opening metathesis polymerization using the Grubbs 3 rd generation catalyst.
ISSN:1759-9954
1759-9962
DOI:10.1039/c9py00769e