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The calculation of polymer adsorption by TiO2 pigment from interfacial measurements

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  • Colloid Science
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Summary

A method for calculating the adsorption of polymer onto pigmentary forms of titania from solution is described. It is based en the assumption that titania surfaces, coated. or not, can be treated as water surfaces. From a knowledge of interfacial parameters and the surface area of the pigment the amount of polymer adsorbed from solution can be calculated.

The experimentally determined polymer adsorption isotherms were found to lie within the two predicted polymer adsorption isotherms based on (a) surface area of pigment from nitrogen adsorption. (b) surface area of pigment from electron micrographs.

Zusammenfassung

Es wird eine Methode zur Berechnung der Adsorption von Polymeren aus Lösungen an Titandioxyd-Pigmenten beschrieben. Sie basiert auf der Annahme, daß Titandioxyd-Oberflächen, sowohl beschichtet als auch nicht beschichtet, wie Wasseroberflächen behandelt werden können. Wenn die Grenzflächenparameter und die Abmessungen der Oberfläche des Pigments bekannt sind, kann die aus der Lösung adsorbierte Polymerisatmenge berechnet werden.

Es wurde festgestellt, daß die experimentell bestimmten Polymeradsorptionsisothermen innerhalb der zwei vorhergesagten Polymeradsorptionsisothermen liegen, die auf (a) der Pigmentoberfläche aus der Stickstoff Adsorption, (b) der Pigmentoberfläche aus Elektronen-Mikrographien basieren.

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Authors and Affiliations

  1. Paints Division, Imperial Chemical Industries Limited, Slough Berks, England

    A. Doroszkoivski, K. Lambourne & J. Walton

Authors
  1. A. Doroszkoivski
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  2. K. Lambourne
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  3. J. Walton
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With 12 figures and 1 table

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Doroszkoivski, A., Lambourne, K. & Walton, J. The calculation of polymer adsorption by TiO2 pigment from interfacial measurements. Colloid & Polymer Sci 255, 896–901 (1977). https://doi.org/10.1007/BF01617097

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  • DOI: https://doi.org/10.1007/BF01617097

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