pH Influence on Adsorption Behavior, Surface Dilational Rheology and Foam Stability of Mixed Sodium Humates / Cetyltrimethylammonium Bromide Solutions

Authors

  • G. I. Kovtun Lytvynenko Institute of Physical-Organic and Coal Chemistry of National Academy of Sciences of Ukraine
  • S. L. Khil'ko Lytvynenko Institute of Physical-Organic and Coal Chemistry of National Academy of Sciences of Ukraine

Abstract

The results of the ring and the oscillating drop shape methods investigation of adsorption and surface rheological characteristics of natural polyelectrolytes–sodium humates solutions with additives of cetyltrimethylammonium bromide (CTAB) at a liquid–gas interface at different pH values are presented. The main features of concentration dependences of surface tension and visco-elasticity modulus for mixed sodium humates / CTAB solutions may be connected with the aggregate formation in the adsorption layer at appropriate CTAB concentrations. The possibility of foam formation from sodium humates / CTAB mixed solutions is studied. It was shown that pH reduction leads to an increase of foam stability.

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(1)
Kovtun, G. I.; Khil’ko, S. L. PH Influence on Adsorption Behavior, Surface Dilational Rheology and Foam Stability of Mixed Sodium Humates Cetyltrimethylammonium Bromide Solutions. Him. Fiz. Tehnol. Poverhni 2012, 3, 463-472.

Issue

Vol. 3 No. 4 (2012): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

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Articles

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