Reference : Controlled radical polymerization of alkyl methacrylates in the presence of NO/NO2 mi...
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http://hdl.handle.net/2268/26858
Controlled radical polymerization of alkyl methacrylates in the presence of NO/NO2 mixtures
English
Detrembleur, Christophe mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Claes, Michaël [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Jérôme, Robert mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
26-Jun-2003
Advances in controlled/living radical polymerization
Matyjaszewski, Krzysztof
The American Chemical Society, Division Polymer Chemistry
ACS Symposium Series
496-518
9780841238541
[en] radical polymerization ; nitroxide-mediated polymerization (NMP)
[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.
Center for Education and Research on Macromolecules (CERM)
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Researchers
http://hdl.handle.net/2268/26858
10.1021/bk-2003-0854.ch035
http://pubs.acs.org/doi/abs/10.1021/bk-2003-0854.ch035

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