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Controlled radical polymerization of alkyl methacrylates in the presence of NO/NO2 mixtures
Detrembleur, Christophe; Claes, Michaël; Jérôme, Robert
2003In Matyjaszewski, Krzysztof (Ed.) Advances in controlled/living radical polymerization
 

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Keywords :
radical polymerization; nitroxide-mediated polymerization (NMP)
Abstract :
[en] Radical polymerization of alkyl methacrylates initiated by AIBN is controlled when conducted in the presence of a mixture of NO/NO2. Reaction of alkyl methacrylates with NO/NO2 leads indeed to the monomer adduct and parent α-nitro, ω-nitroso oligomers, which are precursors of nitroxides, known to control the radical polymerization of alkyl methacrylates, according to a "Nitroxide-Mediated Polymerization" (NMP) mechanism. Although some side reactions may occur with time (increasing polydispersity), polymerization of MMA initiated by AIBN at low temperature (60°C) after bubbling of NO/NO2 is relatively fast, and the molecular weight is dictated by the amount of NO/NO2. Finally, for the first time, copolymerization of MMA with HEMA (10/1; v/v) has been controlled by this mixture of NO and NO2 although the reaction remains very fast (ca. 65% monomer conversion after 5 h at 60°C), which is of prime importance for coating applications.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Detrembleur, Christophe ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Claes, Michaël;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Controlled radical polymerization of alkyl methacrylates in the presence of NO/NO2 mixtures
Publication date :
26 June 2003
Main work title :
Advances in controlled/living radical polymerization
Editor :
Matyjaszewski, Krzysztof
Publisher :
The American Chemical Society, Division Polymer Chemistry
ISBN/EAN :
9780841238541
Collection name :
ACS Symposium Series
Pages :
496-518
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
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