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      Matrix Degradation during High Speed Extrusion of Polypropylene/Clay Nanocomposites – Influence on Filler Dispersion

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          Abstract

          We prepared polypropylene/organoclay nanocomposites by melt blending in a twin-screw extruder, exploring the domain of high screw speeds (up to 1 100 min −1). The samples were characterized at both microscale (size of agglomerates) and nanoscale (level of exfoliation). We show that, despite a satisfactory exfoliation, the polymer matrix suffered important thermomechanical degradation by chain scission. We propose a way to correct this degradation on the viscosity curves and we confirm that high screw speeds are not necessarily favorable to clay exfoliation, essentially because of the too high melt temperatures encountered during the process.

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          Most cited references 44

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          Synthesis of nylon 6-clay hybrid

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            Synthesis and barrier properties of poly(ɛ-caprolactone)-layered silicate nanocomposites

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              Flammability Properties of Polymer−Layered-Silicate Nanocomposites. Polypropylene and Polystyrene Nanocomposites†

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                Author and article information

                Journal
                ipp
                International Polymer Processing
                Carl Hanser Verlag
                0930-777X
                2195-8602
                12 August 2016
                : 31
                : 4
                : 508-516
                Affiliations
                1 MINES ParisTech, PSL Research University, CEMEF – Centre de Mise en Forme des Matériaux, Sophia-Antipolis, France
                Author notes
                [* ] Correspondence address, Mail address: Bruno Vergnes, MINES ParisTech, PSL Research University, CEMEF – Centre de Mise en Forme des Matériaux, UMR CNRS 7635, CS 10207, 06904 Sophia-Antipolis, France. E-mail: bruno.vergnes@ 123456mines-paristech.fr
                IPP3285
                10.3139/217.3285
                © 2016, Carl Hanser Verlag, Munich
                Counts
                References: 44, Pages: 9
                Product
                Self URI (journal page): http://www.hanser-elibrary.com/loi/ipp
                Categories
                Regular Contributed Articles

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