[en] Poly(ε-caprolactone) layered silicate nanocomposites were synthesized by in situ inter-calative ring-opening polymerization (ROP) of ε-caprolactone. The polymerization was promoted by thermal or catalytic initiation starting from either non-modified natural sodium-montmorillonite (MMT-Na) or montmorillonite modified by different ammonium cations bearing either non-functional alkyl chains or chains terminated by carboxylic acid or hydroxyl functions. The resulting compositions were analyzed by small-angle X-ray diffraction and transmission electron microscopy. The clay dispersion depended on the structure of the alkyl ammonium. Exfoliated nanocomposites were formed when hydroxyl-containing alkyl-ammonium was used; otherwise, partially intercalated/partially exfoliated structures were observed. Moreover, caving to the inherent catalytic properties of the montmo-rillomte surface, it was also possible to prepare intercalated nanocomposites by in situ polymerization of ε-caprolactone in presence of non-modified montmorillonite-Na (MMT-Na) without any added catalyst.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering Chemistry
Author, co-author :
Pantoustier, Nadège; University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Alexandre, Michaël ; University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Degée, Philippe; University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Kubies, Dana; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Henrist, Catherine ; Université de Liège - ULiège > Department of Chemistry > Laboratory of Structural Inorganic Chemistry (LCIS)
Rulmont, André ; Université de Liège - ULiège > Department of Chemistry > Laboratory of Structural Inorganic Chemistry (LCIS)
Dubois, Philippe ; University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Language :
English
Title :
Intercalative polymerization of cyclic esters in layered silicates : thermal vs. catalytic activation
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique the "Région Wallonne" and the "Fonds Social Européen" in the frame of Objectif 1-Hainaut: Materia Nova The "Région Wallonne" in the framework of the WJD.U program TECMAVER