Ultrasonic Investigation on Surfactants in the Presence of Builders and Fillers

Surfactants and builders are the two most important ingredients in laundry, household and personal-care cleaning products. They play a key role in washing processes. The enzyme Lipase is coupled with three fillers in the presence of aqueous surfactants builder solutions to study the efficiency of the detergent in the removal of dye colour through acoustical investigations. Ultrasonic velocities (U) and densities (ρ) are measured for different solutions at 303 K using thermostatically controlled water bath whose temperature was maintained to an accuracy of ±0.01°C. Acoustical Parameters such as adiabatic compressibility (β), free length (L_f), acoustic impedance (Z) and surface properties like surface tension (γ), surface area (Y) and molar surface energy (E) are determined.