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2006-12-02 - Article/Dans un journal avec peer-review - Anglais - 14 page(s)

Coulembier Olivier , Ghisdal J., Degée Philippe, Dubois Philippe , "Benzyl b-malolactonate : synthesis, copolymerization and design of novel biodegradable macomolecular surfactants" in ARKIVOC, 10, 57-70

  • Edition : Arkat USA Inc., Gainesville
  • 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) Racemic [R,S] benzyl ß-malolactonate monomer (MLABz) was synthesized according to the well-established “aspartic acid” route and purified to such an extend that it allowed the controlled synthesis of poly([R,S] ß-malic acid)-b-poly((D,L)-lactide) diblock copolymers by a versatile three-step pathway combining anionic and coordination-insertion ROP of MLABz and lactide monomers, respectively. For the sake of comparison, amphiphilic poly([R,S] ß-malic acid)-b-poly(e-caprolactone) diblock copolymers of identical composition were synthesized as well. The associating behavior of monodisperse diblock copolymers consisting of water-soluble poly(ß-malic acid) block and hydrophobic polylactide or poly(e-caprolactone) block was studied in aqueous solution. Accordingly, both types of copolymers were dissolved directly in water and (dynamic) surface tension measurements were carried out. It came out that poly(ß-malic acid)-b-poly((D,L)-lactide) amphiphilic diblock copolymers showed tensioactive properties with a lower critical micellar concentration, a higher efficiency of adsorption and a better monomer coefficient diffusion compared to corresponding poly(ß-malic acid)-b-poly(e-caprolactone) diblock copolymers of comparative composition.

Notes :
  • (Anglais) Lecture en ligne: http://www.arkat-usa.org/get-file/22946/
  • (Anglais) ISSN 1424-6376