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    Preparation of polyurethane/hectorite, polyurethane/montmorillonite, and polyurethane/laponite nanocomposites without organic modifiers

    Year: 2010

    Journal: Journal of Applied Polymer Science, Volume 116, Issue 2, pages 832–837, 15 April 2010, 20111221

    Authors: M. Özgür Seydibeyoglu1, Sevim Isçi 2, Nurfer Güngör 2, O. Isik Ece 3, F. Seniha Güner 4

    Organizations: 1 Institute of Science and Technology, Materials Science and Engineering, Istanbul Technical University, Istanbul 34469, Turkey, 2 Faculty of Science and Letters, Department of Physics Engineering, Istanbul Technical University, Istanbul 34469, Turkey, 3 Faculty of Mines, Department of Geological Engineering, Istanbul Technical University, Istanbul 34469, Turkey, 4 Faculty of Chemical and Metallurgical Engineering, Department of Chemical Engineering, Istanbul Technical University, Istanbul 34469, Turkey

    Polyurethane (PU) nanocomposites were prepared from hectorite (HEC) and laponite without adding any organic modifier. PU-montmorillonite nanocomposites were prepared for comparison. The structure of the composites were investigated by transmission electron microscopy, X-ray diffraction spectroscopy, and Fourier transform infrared spectroscopy. Thermal gravimetric analysis and dynamic mechanic analysis were used for determination of the thermal and viscoelastic behaviors, respectively. Tensile tests were conducted for characterization of the mechanical properties. The results showed a 113.5% increase in the tensile strength of PU containing 7 wt % HEC compared to that of neat PU.