Structural and Thermal Properties of Nanocomposites Based on Polyolefins and Montmorillonite Modified with Ethyl 2-Aminobenzoate
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Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarin 7 Str., 87-100 Toruń, Poland
Publish date: 2017-09-03
Adv. Sci. Technol. Res. J. 2017; 11(3):233–239
Our efforts were focused on improving thermal stability of polyethylene (PE) and polypropylene (PP) through incorporation of new organically modified montmorillonite. The reactive organofilic montmorillonite (MMT-EA) was prepared by exchanging the interlayer inorganic cations in montmorillonite by a large excess of ethyl 2-aminobenzoate (EA). Organic modification can affect not only microstructures, but also the properties of the polymer - montmorillonite nanocomposites. In the next step novel polyolefins/ organoclay nanocomposites were prepared by melt intercalation process. In order to obtain this new family of materials and enhance their properties was used very low filler level, from 1.5 to 5 wt.%. The dispersion of the montmorillonite layers in the polymers was characterized by using X-ray diffraction (XRD). The thermal properties and structure changes were studied by different scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Further studies indicated that the exfoliated clay modified with EA improved thermal stability of the PE and PP/MMT-EA nanocomposites.
Ewa Olewnik-Kruszkowska   
Nicolaus Copernicus University in Toruń, Faculty of Chemistry, Chair of Physical Chemistry and Physicochemistry of Polymers, Gagarin 7 Str., 87-100 Toruń, Poland