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2007-02-27 - Article/Dans un journal avec peer-review - Anglais - 7 page(s)

Bougard F., Jeusette Mélanie, Mespouille Laetitia , Dubois Philippe , Lazzaroni Roberto , "Synthesis and Supramolecular Organization of Amphiphilic Diblock Copolymers Combining Poly( N,N-dimethylamino-2-ethyl methacrylate) and Poly(e-caprolactone)" in Langmuir, 23, 5, 2339-2345

  • Edition : American Chemical Society, Washington (DC)
  • Codes CREF : Chimie macromoléculaire (DI1315), Matériaux optiques (DI1256), Physique appliquée des surfaces (DI2723), Chimie quantique (DI1321), Catalyses hétérogène et homogène (DI1334), Optique (DI1250)
  • Unités de recherche UMONS : Matériaux Polymères et Composites (S816), Chimie des matériaux nouveaux (S817)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) Well-defined poly(e-caprolactone) (PCL)/poly(N,N-dimethylamino-2-ethyl methacrylate (PDMAEMA) diblock copolymers were synthesized, and their self-assembly was investigated as micelles both in aqueous solutions and in thin solid deposits. The synthetic approach combines controlled ring opening polymerization (ROP) of e-caprolactone (CL) and atom transfer radical polymerization (ATRP) of N,N-dimethylamino-2-ethyl methacrylate (DMAEMA). Diblock copolymers were prepared by ROP of CL initiated by (Al(OiPr)3), followed by quantitative reaction of the PCL hydroxy end-groups with bromoisobutyryl bromide. The a-isopropyloxy ?-2-bromoisobutyrate poly(e-caprolactone) (PCL-Br) obtained was used as a macroinitiator for the ATRP of DMAEMA. The molecular characterization of those diblock copolymers was performed by 1H NMR spectroscopy and gel permeation chromatography (GPC) analysis. The self-assembly of the copolymers into micellar aggregates in aqueous media was followed with dynamic light scattering (DLS), as a function of concentration and the pH. In parallel, the morphology of the solid deposits of those micelles was examined with atomic force microscopy (AFM).

Notes :
  • (Anglais) Publié en ligne le 10 janvier 2007
Identifiants :
  • DOI : 10.1021/la0620657