DI-UMONS : Dépôt institutionnel de l’université de Mons

Recherche transversale
Rechercher
(titres de publication, de périodique et noms de colloque inclus)
2008-08-01 - Article/Dans un journal avec peer-review - Anglais - 17 page(s)

Mespouille Laetitia , Coulembier Olivier , Paneva Dilyana, Degée Philippe, Rashkov Iliya, Dubois Philippe , "Synthesis of adaptative and amphiphilic polymer model conetworks by versatile combination of ATRP, ROP and “Click chemistry"" in Journal of Polymer Science. Part A-1, Polymer Chemistry, 46, 15, 4997-5013

  • Edition : Wiley Interscience, New York (NY)
  • Codes CREF : Chimie macromoléculaire (DI1315), Catalyses hétérogène et homogène (DI1334)
  • Unités de recherche UMONS : Matériaux Polymères et Composites (S816)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) Well-defined adaptative and amphiphilic polymer conetworks based on hydrophilic poly(N,N-dimethylamino-2-ethyl methacrylate) (PDMAEMA) and hydrophobic poly(e-caprolactone) (PCL) have been prepared by combination of ATRP, ROP, and “Click chemistry.” Telechelic a,?-alkyne terminated PCL crosslinker was obtained by ring-opening polymerization (ROP) of CL in THF at 80 °C initiated by 1,4-butanediol and catalyzed by tin(II) bis 2-ethyl hexanoate (Sn(Oct)2), followed by the quantitative esterification of hydroxyl end-groups by activated 4-pentynoic acid. In parallel, an azido-containing PDMAEMA-based copolymer was obtained in a three-step strategy involving primarily the copolymerization of DMAEMA with newly synthesized 2-(2-azidoethoxy)ethyl methacrylate (AEEMA) monomer. The latter was obtained by nucleophilic substitution of chloride atom from 2-(2-chloroethoxy)ethanol by an azide group followed by the esterification reaction of the hydroxyl group with methacrylic anhydride. The copolymerization was carried out in an equivolumic mixture of H2O and isopropanol at r.t. and initiated by a ?-bromoisobutyryl oligo PEO macroinitiator in the presence of various ligated copper(I)-based catalysts. In a last step, both polymer precursors were chemically linked by the Huisgen-1,3-dipolar cycloaddition in anhydrous THF at r.t. using CuBr complexed by 2,2'-bipyridine ligand as catalyst. Final material was characterized by the means of DSC and SEM, both attesting of a homogeneous distribution of the PCL crosslinkers and a highly porous structure in this new amphiphilic model conetworks.

Notes :
  • (Anglais) Lecture en ligne: http://onlinelibrary.wiley.com/doi/10.1002/pola.22827/pdf
  • (Anglais) Publié le 17 juin 2008
Identifiants :
  • DOI : 10.1002/pola.22827