Exploring the effects of polyacrylic acid on triton-X-100 aqueous solutions: Density, viscosity and ultrasonic velocity analysis

This study explore the intricate interplay between Triton-X-100 surfactant and polyacrylic acid (PAA) polymer in aqueous solutions, focusing on the influence of temperature variations and PAA concentrations on the physical properties. Through experimental analysis, including measurements of density, viscosity, and ultrasonic velocity, various interaction parameters were calculated to elucidate the underlying phenomena. Notably, the viscosity of the surfactant solution increases with increasing PAA concentration. Temperature alterations revealed nuanced effects: while ultrasonic velocity displayed an initial rise from 298.15 K to 308.15 K, followed by a decline at 313.15 K, density, adiabatic compressibility, and intermolecular free length decreased with rising temperatures. Conversely, ultrasonic velocities, acoustic impedance, molar volumes, and molar sound velocities exhibited an upward trend with increasing temperature. Moreover, the ultrasonic velocities demonstrated a complex relationship with PAA concentration, the ultrasonic velocities initially increases then decreases with increasing concentration of PAA. For 0.03% PAA it shows maximum ultrasonic velocities and maximum velocity observed at 0.03% PAA concentration. This comprehensive analysis sheds light on the thermodynamic and acoustic behavior of Triton-X-100/PAA aqueous solutions, offering valuable insights into their physical interactions.