Reference : Poly (ε-caprolactone-b-glycolide) and Poly(D,L-lactide-b-glycolide) diblock copolyesters...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/9834
Poly (ε-caprolactone-b-glycolide) and Poly(D,L-lactide-b-glycolide) diblock copolyesters: controlled synthesis, characterization, and colloidal dispersions
English
Barakat, Ibrahim [University of Liège (ULg) > Department of Chemistry and "Département des sciences biomédicales et précliniques" > Center for Education and Research on Macromolecules (CERM) and "Biochimie et Physiologie Générale" > >]
Dubois, Philippe [University of Liège (ULg) and University of Mons-Hainaut (UMH) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) and Laboratory of Polymeric and Composite Materials (SMPC) > >]
Grandfils, Christian mailto [University of Liège (ULg) > Department of Chemistry and "Département des sciences biomédicales et précliniques" > Center for Education and Research on Macromolecules (CERM) and "Biochimie et Physiologie Générale" > >]
Jérôme, Robert mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
15-Jan-2001
Journal of Polymer Science. Part A, Polymer Chemistry
John Wiley & Sons
39
2
294-306
Yes (verified by ORBi)
0887-624X
1099-0518
Hoboken
[en] ring-opening polymerization (ROP) ; lactone ; block copolymer
[en] Living -aluminum alkoxide poly--caprolactone and poly-D,L-lactide chains were synthesized by the ring-opening polymerization of -caprolactone (-CL) and D,L-lactide (D,L-LA), respectively, and were used as macroinitiators for glycolide (GA) polymerization in tetrahydrofuran at 40 °C. The P(CL-b-GA) and P(LA-b-GA) diblock copolymers that formed were fractionated by the use of a selective solvent for each block and were characterized by 1H NMR spectroscopy and differential scanning calorimetry analysis. The livingness of the operative coordination-insertion mechanism is responsible for the control of the copolyester composition, the length of the blocks, and, ultimately, the thermal behavior. Because of the inherent insolubility of the polyglycolide blocks, microphase separation occurs during the course of the sequential polymerization, resulting in a stable, colloidal, nonaqueous copolymer dispersion, as confirmed by photon correlation spectroscopy.
Center for Education and Research on Macromolecules (CERM)
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Researchers
http://hdl.handle.net/2268/9834
10.1002/1099-0518(20010115)39:2<294::AID-POLA50>3.0.CO;2-A
http://www3.interscience.wiley.com/cgi-bin/fulltext/76502058/PDFSTART

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Barakat_I_2001_J pol sci part A_39_2_294.pdfNo commentaryAuthor postprint297.03 kBRequest copy
Restricted access
Barakat I 2001 JPS Polym Chem 294.pdfPublisher postprint272.5 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.