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Harnessing synergies in tin-clay catalyst for the preparation of poly(ϵ-caprolactone)/halloysite nanocomposites

AutorLahcini, M.; Elhakioui, S.; Szopinski, D.; Neuer, B.; El Kadib, A.; Scheliga, F.; Raihane, M.; Baltá Calleja, Francisco José ; Luinstra, G. A.
Palabras claveTetra(phenylethynyl)tin
Ring-opening polymerization
Halloysites nanotubes
Poly(ε-caprolactone)
Nanocomposites
Fecha de publicación13-may-2016
EditorPergamon Press
CitaciónEuropean Polymer Journal 81: 1-11 (2016)
ResumenThe first example of synergistic alkynyl-tin initiated ring-opening polymerization of cyclic ester in the presence of nanotubular silica particles is herein reported. Hydroxyl groups on the halloysite (HNTs) surface act as initiators for caprolactone polymerization and the resulting polymers are covalently grafted to the HNTs. The covalent anchorage of the poly(ϵ-caprolactone) (PCL) backbone to the HNTs ensures a high degree of interpenetration at the hybrid interface thereby allowing long-term stability of the PCL-grafted-HNTs suspension. Scanning electron microscopy analyses showed the uniform dispersion of the HNTs filler within the PCL matrix. The melt viscosity of the poly(ϵ-caprolactone)/HNTs composites decreases with increasing clay content. Thermal stability and microindentation hardness properties of the resulting nano-composites were significantly improved, as compared to native, non-reinforced PCL. 2016 Elsevier Ltd. All rights reserved.
Descripción11 págs.; 9 figs.; 5 tabs.
Versión del editorhttps://doi.org/10.1016/j.eurpolymj.2016.05.014
URIhttp://hdl.handle.net/10261/151425
DOI10.1016/j.eurpolymj.2016.05.014
Identificadoresdoi: 10.1016/j.eurpolymj.2016.05.014
issn: 0014-3057
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