How to concentrate an aqueous polyelectrolyte/surfactant mixture by adding water

Article Abstract:

The phase separation of aqueous systems consisting of sodium polyacrylate and the surfactant cetyltrimethylammonium bromide was investigated. Experimental results showed that the aqueous systems can separate into a concentrated phase and a dilute phase, and this separation can be induced by the addition of water. Adding more water causes the concentrated phase to become more concentrated. It was also found that the surfactant ions are always aggregated into elongated micelles.

Water chemistry, Surface active agents, Electrolyte solutions, Polyelectrolytes, Sodium compounds

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Polyelectrolytic behavior of a novel fluorine-containing ionomer, PPFNA

Article Abstract:

A study was made of the solution properties of a novel fluorine-containing ionomer, PPFNA, by using pH titration, conductivity, and viscosity measurements. It was indicated that the polymer, which is a poly(carboxylic acid), dissociates strongly, resulting in a low pH value and a high specific conductance at low degrees of neutralization.

Science & research, Industrial Gas Manufacturing, Industrial gases, Fluorine, Usage, Hydrogen-ion concentration, Chemical properties, pH, Neutralization (Chemistry)

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