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Cationic organomagnesium complexes as homogeneous catalysts for the ring-opening polymerization of lactones

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dc.contributor.advisor Hayes, Paul G.
dc.contributor.author Ireland, Benjamin John
dc.contributor.author University of Lethbridge. Faculty of Arts and Science
dc.date.accessioned 2011-08-19T19:21:05Z
dc.date.available 2011-08-19T19:21:05Z
dc.date.issued 2009
dc.identifier.uri http://hdl.handle.net/10133/2513
dc.description xxiii, 126 leaves ; 29 cm en_US
dc.description.abstract Polylactones are biodegradable polymers which may be used as alternatives to conventional plastics and have shown promise in novel medical applications. Industrial production of polylactones requires the use of a catalyst. The work described herein is directed toward the development of novel cationic magnesium-based lactone-polymerization catalysts. These cationic species are produced by alkide abstraction from a neutral precursor; a strategy which has seen only preliminary exploration in the context of lactone polymerization. The target catalyst system features a neutral phosphinimine-derivative ligand structure which was developed and produced specifically for the purpose of lactone polymerization catalysis. Target complexes were obtained by reaction of neutral alkylmagnesium precursors with protonated ligand derivatives. Syntheses and characterization of novel species are described herein. These catalysts are very active in the polymerization of 6-caprolactone, generating high molecular weight polymers in mere minutes under mild conditions. A preliminary study of polymerization catalysis is also reported. en_US
dc.language.iso en_US en_US
dc.publisher Lethbridge, Alta. : University of Lethbridge, Dept. of Chemistry and Biochemistry, c2009 en_US
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en_US
dc.subject Polymerization en_US
dc.subject Catalysts en_US
dc.subject Organomagnesium compounds en_US
dc.subject Plastics en_US
dc.subject Manufacturing process en_US
dc.subject Dissertations, Academic en_US
dc.title Cationic organomagnesium complexes as homogeneous catalysts for the ring-opening polymerization of lactones en_US
dc.type Thesis en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Chemistry and Biochemistry en_US

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