Article (Scientific journals)
Macromolecular engineering of polylactones and polylactides. 8. Ring-opening polymerization of ε-caprolactone initiated by primary amines and trialkylaluminum
Dubois, Philippe; Degée, Philippe; Jérôme, Robert et al.
1992In Macromolecules, 25, p. 2614-2618
Peer Reviewed verified by ORBi
 

Files


Full Text
Dubois P 1992 Macromolecules 2614.pdf
Publisher postprint (543.81 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
ring-opening polymerization (ROP); lactone
Abstract :
[en] Whenever added with triethylaluminum, primary amines have been found to be effective initiators for epsilon-caprolactone polymerization in both toluene and THF at 40°C. The IR and NMR analysis of the polyester has supported a polymerization mechanism proceeding through a "coordination-insertion" pathway and the selective rupture of the acyl-oxygen bond of the monomer. The alkylaluminum activates the carbonyl group of the monomer and accordingly favors the nucleophilic addition of the amine, which is the actual initiation step. Propagation is typically a living process, and the molecular weight distribution is controlled by both AlEt3/amine molar ratio and solvent As an extension of that mechanism, diethylaluminum omega-amino alkoxide has been prepared on purpose and successfully used as an initiator for the synthesis of α,ω-dihydroxypoly(ε-caprolactone).
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Dubois, Philippe;  Université de Liège - ULiège > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis
Degée, Philippe;  Université de Liège - ULiège > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis
Jérôme, Robert ;  Université de Liège - ULiège > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis
Teyssié, Philippe ;  Université de Liège - ULiège > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis
Language :
English
Title :
Macromolecular engineering of polylactones and polylactides. 8. Ring-opening polymerization of ε-caprolactone initiated by primary amines and trialkylaluminum
Publication date :
05 November 1992
Journal title :
Macromolecules
ISSN :
0024-9297
eISSN :
1520-5835
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Volume :
25
Pages :
2614-2618
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BELSPO - Politique scientifique fédérale [BE]
IRSIA - Institut pour l'Encouragement de la Recherche Scientifique dans l'Industrie et l'Agriculture [BE]
Available on ORBi :
since 02 July 2009

Statistics


Number of views
51 (5 by ULiège)
Number of downloads
1 (1 by ULiège)

Scopus citations®
 
58
Scopus citations®
without self-citations
45
OpenCitations
 
51

Bibliography


Similar publications



Contact ORBi