Novel segmented polyurethane/organically modified montmorillonite nanocomposites were prepared, covering a wide range of inorganic composition. The influence of structural and compositional variety on constituent interactions, especially on the polymer ability to exfoliate the nanometer scale silicate layers of the organoclay, was studied by comparing nanocomposites with varying degrees of polarity, hydrophilicity, H-bonding ability of the soft polyurethane segments and clay loading.

The effect of nano-sized silicate layers of montmorillonite on glass transition, dynamic mechanical and thermal degradation properties of segmented polyurethane was investigated. X-ray diffraction analysis, thermal (differential scanning calorimetry, thermal gravimetric analysis) and spectral techniques (Fourier transform infrared measurements, solid-state nuclear magnetic resonance), optical observation (transmission electron/scanning electron microscopy) as well as mechanical and dynamic-mechanical analysis were used for the characterization of the newly prepared materials.

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