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Colloidal systems containing droplets or bubbles are important for a wide variety of practical products and industrial processes i. e. control of filtration, cleaning emulsions, fire extinguishing foams, preparing foods or formulating personal care products. The study investigates the structure and stability of foam and emulsion obtained from different surfactants used as a potential compounds of fire fighting agent or removal of chemicals. The optical microscope Olympus BX51 (USA) for purpose of structure observation was used. The foamability of micellar surfactant solutions was tested with perforated disc beating method. Emulsions were prepared with 0.05 – 5 % solution of surfactants and diesel oil. The stability was monitored by measuring the volume of separated phases and recorded after 30 min since the homogenization was performed. The foamability as well as emulsion stability of the surfactant solutions depends on the chemical character of compounds.

Selection of Surfactants on the Basis of Foam and Emulsion Properties to Obtain the Fire Fighting Foam and the Degreasing Agent