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2005-06-01 - Article/Dans un journal avec peer-review - Anglais - 9 page(s)

Mespouille Laetitia , Degée Philippe, Dubois Philippe , "Amphiphilic poly(N,N-dimethylamino-2-ethyl methacrylate)-g-poly(e-caprolactone) graft copolymers : synthesis and characterisation" in European Polymer Journal, 41, 6, 1187-1195

  • Edition : Elsevier Science
  • 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) Amphiphilic poly(N,N-dimethylamino-2-ethyl methacrylate)-g-poly(e-caprolactone) graft copolymers (PDMAEMA-g-PCL) with various compositions and molecular weights were synthesised via a fully controlled three-step strategy. First, poly(e-caprolactone) macromonomers (PCLMA) were prepared by ring-opening polymerization (ROP) of e-caprolactone (CL) initiated by aluminum triisopropoxide (Al(OiPr)3), followed in a second step by quantitative esterification of PCL hydroxy end-groups with a methacrylic acid derivative. Finally, the controlled copolymerization of PCLMA and N,N-dimethylamino-2-ethyl methacrylate (DMAEMA) was carried out by atom transfer radical polymerisation (ATRP) in THF at 60 °C using CuBr ligated with 1,1,4,7,10,10, hexamethyl triethylenetetramine and ethyl 2-bromoisobutyrate as catalyst and initiator, respectively. Furthermore, PDMAEMA-g-PCL graft copolymers were reacted with methyl iodide to convert the pendant tertiary amines into quaternary ammonium iodides increasing accordingly their water solubility. Some preliminary experiments was further carried out by tensiometry and dynamic light scattering in order to shed so light on the tensioactive behaviour of these amphiphilic graft copolymers (with protonated amines or quaternary ammonium cations).

Notes :
  • (Anglais) Publié en ligne le 28 janvier 2005
  • (Anglais) Lecture en ligne: http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TWW-4FBW5RG-7-1&_cdi=5573&_user=532054&_pii=S0014305705000121&_origin=search&_coverDate=06%2F30%2F2005&_sk=999589993&view=c&wchp=dGLzVlb-zSkWb&md5=1ae1e7b380abf0607ad49e655732475a
Identifiants :
  • DOI : 10.1016/j.eurpolymj.2004.12.016