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International Journal of Polymer Science - Volume 2016 2016, Article ID 8564245, 8 pages -

Research Article

Donetsk Institute for Physics and Engineering Named after A. A. Galkin, National Academy of Sciences of Ukraine, Pr. Nauki 46, Kiev 03028, Ukraine

Donetsk National University of Economics and Trade Named after M. Tugan-Baranovsky, Kurchatov Street, No. 13, Krivoi Rog 50042, Ukraine

Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza Street, No. 112, 90363 Lodz, Poland

Semenov Institute of Chemical Physics, Russian Academy of Sciences, Kosygin Street, No. 4, Moscow 119991, Russia

Received 27 May 2016; Revised 29 August 2016; Accepted 25 September 2016

Academic Editor: Miriam Rafailovich

Copyright © 2016 V. A. Beloshenko et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

By the example of polypropylene-organic montmorillonite composite PP-OMMT, the abilities of the method of equal channel multiangular extrusion have been studied with respect to the modification of the structure and the properties of polymeric nanocomposites. With using X-ray structure analysis, TEM, DSC, and dilatometry, it has been demonstrated that this kind of processing provides an additional intercalation of the polymer into OMMT tactoids with the succeeding exfoliation and facilitates an increase in the aspect ratio, the degree of platelet orientation, the crystalline lamellar thickness, and a decrease in the dispersion of the crystallite thickness, as well as the formation of biaxial orientation of the OMMT and PP crystals. The observed structure rearrangements determine enhanced microhardness, ductility, and the heat distortion temperature of the PP-OMMT composite.





Autor: V. A. Beloshenko, A. V. Voznyak, Yu. V. Voznyak, L. A. Novokshonova, V. G. Grinyov, and V. G. Krasheninnikov

Fuente: https://www.hindawi.com/



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