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The effect of kaolin modification of silane coupling agents on the properties of the polyethylene composites

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Domka L., Malicka A., Stachowiak N.
Polish Journal of Chemical Technology
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2008
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vol. 10
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issue 2
5-10
EN
This paper shows the results of using the modified kaolin by silane coupling agents in HDPE composite and the effect of surface modifications of fillers on the properties of polyethylene composites. In the first stage pure and modified kaolin was subjected to a number of tests in order to determine the backfill density, water and paraffin oil absorbability, the surface area and pore volume, the morphology of their grains, thermal analysis and the FT-IR spectroscopy.In the second stage the composites, which were moulded into the samples that could be subjected to further tests, were produced. The samples were characterised by the determination of the hardness according to Shore, the elasticity modulus, the tensile strength and tearing strength.The modification of the kaolin surface has resulted in a substantial improvement of the strength parameters of the obtained polyethylene composites.
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Characterization of TiO2surface following the modification with silane coupling agents

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Jesionowski T., Siwińska-Stefańska K., Krysztafkiewicz A., Sójka-Ledakowicz J., Koprowska J., Pęczkowska B.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 4
72-76
EN
Studies were conducted on the modification of titanium white surface using selected silane coupling agents. The effect of the concentration of the organic coupling agents was examined (0.5; 1 or 3 weight parts per 100 weight parts of TYTANPOL R-003, TYTANPOL R-211 or TYTANPOL R-213 preparation of titanium white). The dispersive properties were determined by an estimation of the particle size distribution curves and of the polydispersity index. Moreover, microscopic observations were conducted permitting to evaluate the surface morphology of the modified TiO2 particles. The profiles of sedimentation in water were also determined for the titanium whites and the BET specific surface areas were determined. Selected samples of the modified and unmodified titanium whites were subjected to elemental analysis.
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