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Templating Of Crystallization And Shear-induced Self-assembly Of Single-wall Carbon Nanotubes In A Polymer-nanocomposite

M. C. García-Gutiérrez, A. Nogales, D. Rueda, C. Domingo, J. García-Ramos, G. Broza, Z. Rosłaniec, K. Schulte, R. Davies, T. A. Ezquerra
Published 2006 · Materials Science

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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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