Polymerization of epsilon-caprolactone initiated by Y alkoxide grafted onto porous silica

[en] Ring-opening polymerization of c-caprolactone has been initiated by Y isopropoxide grafted onto silica, in the presence of 2-propanol, in toluene at 40degreesC. The degree of polymerization is controlled by the initial monomer/(alcohol + alkoxide) molar ratio. Deactivation of the chains by an alcohol is essential for them to be detached from the support and to be collected totally free of metal and silica residues. The alkoxide is also regenerated at the surface of the support, which allows for recycling the catalyst.

Research Center/Unit :

Center for Education and Research on Macromolecules (CERM)

Disciplines :

Chemistry
Materials science & engineering

Author, co-author :

Martin, Eric; 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)

Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)

Language :

English

Title :

Polymerization of epsilon-caprolactone initiated by Y alkoxide grafted onto porous silica

Publication date :

23 September 2003

Journal title :

Macromolecules

ISSN :

0024-9297

eISSN :

1520-5835

Publisher :

Amer Chemical Soc, Washington, United States - Washington

Volume :

Issue :

Pages :

7094-7099

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://pubs.acs.org/doi/pdf/10.1021/ma025974l

Funders :

Omnichem, Louvain-la-Neuve, Belgium
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique

Available on ORBi :

since 19 January 2009

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