Templating of crystallization and shear-induced self-assembly of single-wall carbon nanotubes in a polymer-nanocomposite |
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Authors: | MC García-Gutiérrez A Nogales C Domingo G Broza K Schulte TA Ezquerra |
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Affiliation: | a Department of Macromolecular Physics, Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid, Spain b Technische Universität Hamburg-Harburg, Denickestrasse 15, D-21071 Hamburg, Germany c Institute of Materials Science and Engineering, Szczecin University of Technology, Piastow Av. 19, PL-70310 Szczecin, Poland d ESRF, B.P. 220, F-38043 Grenoble Cedex, France |
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Abstract: | We report the appearance of a novel self-assembling of a fraction of single-wall carbon nanotubes (SWCNT) within a SWCNT-polymer nanocomposite subjected to flow fields upon injection molding processing. By combining X-ray diffraction and Raman spectroscopy techniques, both working on a microfocus fashion, we probe that a fraction of the thinnest SWCNT self-assembles into a rectangular lattice in the sample regions where the shear stress induces the highest levels of nanotube aggregation. Additionally, we demonstrate that a modest amount in weight of nanotubes is enough to template the morphology of crystallization during flow providing a method to obtain a highly desirable fiber-like morphology. |
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Keywords: | Templating of crystallization Polymer-nanocomposite SWCNT |
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