Amphiphilic poly(N,N-dimethylamino-2-ethyl methacrylate)-g-poly(ε- caprolactone) graft copolymers: Synthesis and characterisation

L. Mespouille, Ph Degée, Ph Dubois

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

Amphiphilic poly(N,N-dimethylamino-2-ethyl methacrylate)-g-poly(ε- caprolactone) graft copolymers (PDMAEMA-g-PCL) with various compositions and molecular weights were synthesised via a fully controlled three-step strategy. First, poly(ε-caprolactone) macromonomers (PCLMA) were prepared by ring-opening polymerization (ROP) of ε-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).

langue originaleAnglais
Pages (de - à)1187-1195
Nombre de pages9
journalEuropean Polymer Journal
Volume41
Numéro de publication6
Les DOIs
Etat de la publicationPublié - 1 juin 2005
Modification externeOui

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