Nanocomposites based on a styrene-acrylate copolymer and organically modified montmorillonite 1. Mechanical properties |
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| Authors: | R D Maksimov S Gaidukovs J Zicans M Kalnins E Plume V Spacek P Sviglerova |
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| Institution: | (1) Institute of Polymer Mechanics, University of Latvia, Riga, LV-1006, Latvia;(2) Institute of Polymer Materials, Riga Technical University, Riga, LV-1048, Latvia;(3) Synpo Research Institute, Pardubice, 53207, Czech Republic |
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| Abstract: | The preparation of polymer nanocomposites by mixing a solution of a styrene-acrylate copolymer with a suspension of organically
modified montmorillonite in dimethyl formamide is described. Seven different compositions with organomontmorillonite content
from 0 to 7 wt.% were prepared and tested. Results of their X-ray diffraction analysis are presented. Data on the influence
of organomontmorillonite content on the tensile stress-strain curves, elastic modulus, strength, and ultimate elongation of
the nanocomposites are obtained. The concentration dependences of elastic properties of materials with differently oriented
platelike nanoparticles is analyzed by using an algorithm elaborated for stepwise calculations of elastic constants with account
of the features of structural hierarchy of intercalated and exfoliated nanocomposites.
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 42, No. 3, pp. 375–388, May–June, 2006. |
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| Keywords: | styrene-acrylate copolymer organically modified montmorillonite exfoliated nanocomposite intercalated nanocomposite mechanical properties |
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