Organosilane-modified maghemite nanoparticles and their use as co-initiator in the ring-opening polymerization of epsilon-caprolactone.
Langue
en
Article de revue
Ce document a été publié dans
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2005, vol. 262 (1-3), p. 150-157
Elsevier
Résumé en anglais
Hydroxyl and amino groups were introduced on maghemite nanoparticles surface by grafting of (3-glycidoxypropyl)trimethoxysilane and N-(2-aminoethyl)-3-aminopropyltrimethoxy silane, in several solvents including water, ...Lire la suite >
Hydroxyl and amino groups were introduced on maghemite nanoparticles surface by grafting of (3-glycidoxypropyl)trimethoxysilane and N-(2-aminoethyl)-3-aminopropyltrimethoxy silane, in several solvents including water, toluene and N,N-dimethylformamide. Coating of maghemite particles by a biocompatible and biodegradable polyester, namely the poly(epsilon-caprolactone) was then achieved, by an aluminum isopropoxide-catalyzed ring-opening polymerization of var epsilon-caprolactone initiated ‘from' the maghemite particles surface. Silane and polymer coating were characterized by TGA and DRIFT spectroscopy. In this manner, nanocomposites containing up to 0.43 g of polymer per gram of maghemite were obtained.< Réduire
Mots clés en anglais
(3-Glycidoxypropyl)trimethoxysilane
Silylation
Poly(var epsilon-caprolactone)
Nanocomposite
N-(2-aminoethyl)-3-Aminopropyltrimethoxysilane
Maghemite
Origine
Importé de halUnités de recherche