eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences August 2009 21 2 239 244 jusps-B 1113 article D. Geetha (gee_d72@yahoo.co.in.) 1 T. Thilagavathi 1 P.S. Ramesh 2 C. Rakkappan 2 Department of Physics, Physics wing DDE, Annamalai University, Annamalai Nagar- 608 002, Tamil Nadu -(INDIA) Physics wing DDE, Annamalai University, Annamalai Nagar- 608 002, Tamil Nadu -(INDIA) <p style="text-align:justify">Ultrasonic velocity measurements have been made in an anionic surfactant sodium laureyl sulphate (SLS) with Dextrin (Dx), Hydroxy ethyl cellulose (HEC) and Hydroxy Propyl cellulose (HPC) in ethanol solution as a function of concentration, at a fixed frequency (2MHz). SLS with different polymers are prepared and dissolved in different concentration ratio (1:9 to 9:1). Limiting parameters have been used to explain the salvation of surfactant-polymer molecules.</p> https://ultraphysicalsciences.org/paper/1113/ Dextrin Sodium lauryl sulphate Hydroxy ethyl cellulose Hydroxy propyl cellulose.