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Chemical structure and surface properties of the polyurethane cationomers

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Abstract

Polyurethane cationomers were synthesised in the reaction of various diisocyanates with polyoxypropylene glycol and two N-alkyldiethanolamines. The obtained isocyanate prepolymers were then extended in the aqueous medium by means of 1,6-hexamethylenediamine; stable aqueous dispersions were thus obtained, which were applied to and distributed over the poly(tetrafluoroethylene) surface. After evaporation of water from those dispersions, thin polymer coatings were produced. The analyses with the use of 1H, carbon-13 nuclear magnetic resonance and infrared spectroscopy methods confirmed chemical structures of synthesised cationomers. Also, attempts were made to quantitatively characterise polarities of those structures by means of factors that were defined especially for that purpose. Moreover, the physical model of van Oss–Good and wetting angles for coatings obtained from the polyurethane cationomers in question, measured with the use of standard liquids with various polarity specifications, were utilised to determine the surface free energy values for the obtained ionomers.

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Authors and Affiliations

  1. Department of Polymer Science, Faculty of Chemistry, Rzeszów University of Technology, Al. Powstańców Warszawy 6, 35-959, Rzeszów, Poland

    Piotr Król & Bożena Król

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  1. Piotr Król
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  2. Bożena Król
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Correspondence to Piotr Król.

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Król, P., Król, B. Chemical structure and surface properties of the polyurethane cationomers. Colloid Polym Sci 286, 1243–1256 (2008). https://doi.org/10.1007/s00396-008-1881-3

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  • DOI: https://doi.org/10.1007/s00396-008-1881-3

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