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1996•Journal of Macromolecular Science Part ARequires access

Surface Effects with Natural Rubber Latex

Josef Schurz, U. Zaismann, F. Sommer

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Abstract

Measurements of zeta potential (microelectrophoresis) and surface charge (polyelectrolyte titration) were performed on natural rubber latex with the addition of anion-active tensides of the fatty acid type. The negative zeta potential showed a monotonous rise with increasing tenside concentration for decanate, while a maximum was observed for laurate, myristate, and palmitate. The surface charge increased monotonously. A comparison with direct adsorption measurements showed that zeta potential measurements allow a simple determination of optimal tenside concentration, and that the mentioned maximum is related to the saturation concentration of the tenside.

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What this paper is about

Measurements of zeta potential (microelectrophoresis) and surface charge (polyelectrolyte titration) were performed on natural rubber latex with the addition of anion-active tensides of the fatty acid type. The negative zeta potential showed a monotonous rise with increasing tenside concentration for decanate, while a maximum was observed for laurate, myristate, and palmitate. The surface charge increased monotonously. A comparison with direct adsorption measurements showed that zeta potential measurements allow a simple determination of optimal tenside concentration, and that the mentioned maximum is related to the saturation concentration of the tenside.

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Available abstract

Measurements of zeta potential (microelectrophoresis) and surface charge (polyelectrolyte titration) were performed on natural rubber latex with the addition of anion-active tensides of the fatty acid type. The negative zeta potential showed a monotonous rise with increasing tenside concentration for decanate, while a maximum was observed for laurate, myristate, and palmitate. The surface charge increased monotonously. A comparison with direct adsorption measurements showed that zeta potential measurements allow a simple determination of optimal tenside concentration, and that the mentioned maximum is related to the saturation concentration of the tenside.

Key concepts: Microelectrophoresis, Zeta potential, Surface charge, Chemistry, Adsorption, Natural rubber, Polyelectrolyte, Saturation (graph theory)

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