Reference : α-chloro-ε-caprolactone, a versatile precursor for grafting of aliphatic polyesters
Scientific congresses and symposiums : Poster
Engineering, computing & technology : Materials science & engineering
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/23023
α-chloro-ε-caprolactone, a versatile precursor for grafting of aliphatic polyesters
English
Riva, Raphaël [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Lenoir, Sandrine [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Lecomte, Philippe mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Jérôme, Christine mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
17-Sep-2009
No
No
International
Meeting on Controlled Radical Polymerization (CRP Meeting 2009) "Controlled/Living Radical Polymerizations: Latest trends in Synthesis, Characterization and Industrial Applications"
17/08/2009 - 18/09/2009
P. Dubois, F. Du Prez, C. Barner-Kowolik
Houffalize
Belgium
[en] ring-opening polymerization (ROP) ; lactone
[en] Macromolecular engineering is one of the most powerful tool to synthesise many polymers of various architectures and with tailored properties. This contribution aims at reporting on a novel strategy for the macromolecular engineering of poly-ε-caprolactone (PCL) which is based on the use of a dual monomer / initiator compound, α-chloro-ε-caprolactone (αClεCL). Indeed, αClεCL is not only polymerizable by ring opening initiated by metal alkoxides, but it is also an initiator for the atom transfer radical polymerization (ATRP) of vinyl monomers, so leading easily to the synthesis of macromonomers. Polystyrene macromonomer has been prepared by this method and successfully copolymerized with ε-caprolactone (εCL) with formation of the corresponding grafted PCL. αClεCL is also a precursor of copolyesters with εCL that bear pendant chlorides. These (co)polyesters have been used as macroinitiators for the ATRP of methyl methacrylate in order to synthesise the corresponding graft copolymer.
On the other hand, the pendant chlorides of poly(αClεCL-co-εCL) copolyesters were easily converted into azide with formation of the corresponding azide bearing copolyester. This copolyester was then reacted with an alkyne bearing an ATRP initiator by “Click chemistry”. The conversion of chlorides into more efficient ATRP initiators led to the improvement of the initiation efficiency of the macroinitiator.
Center for Education and Research on Macromolecules (CERM)
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/23023
This poster was presented by Raphaël Riva

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