Article (Scientific journals)
Synthesis and thermal properties of linear amphiphilic diblock copolymers of L-lactide and 2-dimethylaminoethyl methacrylate
Kryuchkov, Maksym A.; Detrembleur, Christophe; Jérôme, Robert et al.
2011In Macromolecules, 44 (13), p. 5209-5217
Peer Reviewed verified by ORBi
 

Files


Full Text
Detrembleur C 2011 Macromolecules 44, 5209.pdf
Publisher postprint (770.58 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Abstract :
[en] A well-defined series of nine poly(l-lactide)-b-(2-dimethylaminoethyl methacrylate) (PLLA-b-PDMAEMA) linear diblock copolymers with low polydispersity were prepared by ring-opening polymerization of LLA using 4-isopropylbenzyl alcohol and tin octoate as the initiating system, conversion of the OH-terminated PLLA into Br-terminated macroinitiators (5, 13, and 19 kg/mol), followed by atom transfer radical polymerization of DMAEMA (to obtain one-half, equal, and twice the molecular weight of each PLLA block). Compositional analysis and molecular weight characterization were done using NMR, SEC–LS, TGA, polarimetry, and PDMAEMA quaternization/precipitation to test for residual PLLA homopolymer. DSC investigations indicate that low molecular weight amorphous PLLA or PDMAEMA blocks (less than or equal to ca. 5000 g/mol) are miscible in the second block. Compared to the parent PLLA homopolymers, PLLA crystallization in the block copolymers is significantly retarded, whereas the degree of crystallinity is only mildly affected and melting points are reduced only for the low molecular weight miscible blocks.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Kryuchkov, Maksym A.;  University of Montreal, Canada > Department of Chemistry > Centre de recherche sur les mat!eriaux auto-assembl!es (CRMAA/CSACS)
Detrembleur, Christophe ;  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)
Prud'homme, Robert E.;  University of Montreal, Canada > Department of Chemistry > Centre de recherche sur les mat!eriaux auto-assembl!es (CRMAA/CSACS)
Bazuin, C. Géraldine;  University of Montreal, Canada > Department of Chemistry > Centre de recherche sur les mat!eriaux auto-assembl!es (CRMAA/CSACS)
Language :
English
Title :
Synthesis and thermal properties of linear amphiphilic diblock copolymers of L-lactide and 2-dimethylaminoethyl methacrylate
Publication date :
12 July 2011
Journal title :
Macromolecules
ISSN :
0024-9297
eISSN :
1520-5835
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Volume :
44
Issue :
13
Pages :
5209-5217
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BELSPO - Politique scientifique fédérale [BE]
MRIF - Gouvernement du Québec. Ministère des Relations internationales et de la Francophonie [CA]
FRQNT - Fonds de Recherche du Québec - Nature et Technologies [CA]
NSERC - Natural Sciences and Engineering Research Council [CA]
MDEI - Ministère de l'Économie et de l'Innovation - Québec [CA]
Available on ORBi :
since 26 August 2011

Statistics


Number of views
87 (3 by ULiège)
Number of downloads
1 (1 by ULiège)

Scopus citations®
 
36
Scopus citations®
without self-citations
32
OpenCitations
 
34

Bibliography


Similar publications



Contact ORBi