Article (Scientific journals)
Analysis of living tert-butyl methacrylate oligoanions in tetrahydrofuran by NMR spectroscopy, viscosity and light scattering
Zune, Catherine; Dubois, Philippe; Grandjean, Jean et al.
1999In Macromolecular Chemistry and Physics, 200 (3), p. 562-573
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Keywords :
anionic polymerization
Abstract :
[en] Previous kinetic studies concluded on the aggregation of the anionic chain ends of living tert-butyl methacrylate oligomers [PtBMA-, Li+] in THF at low temperature. This aggregation has been confirmed by viscosimetry, light scattering and gradient field NMR techniques in a range of temperature from 253 K to 298 K. These techniques have been systematically used for the analysis of both the living oligomers and the same chains recovered after hydrolysis of the anionic end groups. The structure of the growing anionic species was analyzed by means of 13C and 7Li NMR spectroscopy. 13C NMR required the selective labeling of the last monomer units by 13C atoms.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Zune, Catherine;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Dubois, Philippe;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Grandjean, Jean ;  Université de Liège - ULiège > Department of Chemistry > Chimie organique et spectroscopie multinucléaire (COSM)
Jérôme, Robert ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Analysis of living tert-butyl methacrylate oligoanions in tetrahydrofuran by NMR spectroscopy, viscosity and light scattering
Publication date :
March 1999
Journal title :
Macromolecular Chemistry and Physics
ISSN :
1022-1352
eISSN :
1521-3935
Publisher :
Wiley-V C H Verlag Gmbh, Weinheim, Germany
Volume :
200
Issue :
3
Pages :
562-573
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 22 January 2009

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