Characterization of latex-based isotactic polypropylene/clay nanocomposites |
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Authors: | Luljeta Raka Gordana Bogoeva-Gaceva Joachim Loos |
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Affiliation: | a Faculty of Natural Sciences and Mathematics, State University of Tetovo, Blvd Ilinden, 1200 Tetovo, Macedonia b Faculty of Technology and Metallurgy, University St. Cyril and Methodious, 16 Rudjer Boskovic, 1000 Skopje, Macedonia c Laboratory of Materials and Interface Chemistry, Eindhoven University of Technology, 5600 MB, The Netherlands d Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands |
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Abstract: | Polypropylene/clay nanocomposite (PCN) containing 1 wt% organo-modified clay was prepared by latex technology, previously successfully applied for preparation of carbon nanotubes (CNTs)/polymer composites. The level of dispersion of organoclay and the microstructure of the resulting PCNs were characterized by means of X-ray diffraction analysis, transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The obtained results have demonstrated that the latex technique represents a promising method for preparation of PP/clay nanocomposites with good dispersion of exfoliated nanoclay particles. The influence of clay nanoparticles on nonisothermal crystallization of PCN was investigated by DSC. The crystallization onset temperature of the matrix rises for about 5 °C when crystallizing from the quiescent melt. Improved thermal stability of PP/nanoclay was observed as evaluated by TGA. The dynamic mechanical analysis reveals an increase in storage modulus of PP matrix in the nanocomposites for 30% over a temperature range, indicating an increase in the stiffness of the material with the addition of organically modified clay. |
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Keywords: | Nanocomposite Polypropylene Organo-modified clay |
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