ORBi: Degée Philippe - Beneficial effect of triphenylphosphine on the bulk polymerization of L,L-lactide promoted by 2-ethylhexanoic acid tin (II) salt

Reference : Beneficial effect of triphenylphosphine on the bulk polymerization of L,L-lactide promot...


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/4396

Title :	Beneficial effect of triphenylphosphine on the bulk polymerization of L,L-lactide promoted by 2-ethylhexanoic acid tin (II) salt
Language :	English
Author, co-author :	Degée, Philippe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Dubois, Philippe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Jacobsen, S. [University of Stuttgart > > Institut für Kunststofftechnologie > >]
	Fritz, H.-G. [University of Stuttgart > > Institut für Kunststofftechnologie > >]
	Jérôme, Robert [Univerrsity of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Publication date :	15-Jul-1999
Journal title :	Journal of Polymer Science Part A-Polymer Chemistry
Publisher :	John Wiley & Sons
Volume :	37
Issue/season :	14
Pages :	2413-2420
Audience :	International
ISSN :	0887-624X
City :	Hoboken
Keywords :	[en] ring-opening polymerization (ROP) ; lactone
Abstract :	[en] The ring-opening polymerization of L,L-lactide has been studied in bulk using 2-ethylhexanoic acid tin (II) salt, Sn(Oct)2, as a catalyst over a wide range of temperature and monomer to Sn(Oct)2 molar ratio. Although Sn(Oct)2 was known to initiate a fast polymerization, it is reported now that some Lewis bases, particularly triphenylphosphine (P()3), can increase further the polymerization rate, without any detrimental effect on the polylactide thermal stability. In order to optimize the balance between propagation and competing depolymerization reactions, the experimental conditions, i.e., temperature and concentration of Sn(Oct)2 and P()3 have been optimized. The up-scaling of the laboratory experiments to reactive extrusion has proved to be feasible, which demonstrates the efficiency of this catalytic system to produce polylactide in a continuous one-stage polymerization process.
Research units :	Center for Education and Research on Macromolecules (CERM)
Funders :	Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Commission européenne
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/4396
DOI :	10.1002/(SICI)1099-0518(19990715)37:14<2413::AID-POLA15>3.0.CO;2-#
Other URL :	http://www3.interscience.wiley.com/cgi-bin/fulltext/62003254/PDFSTART

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