Apparent Molar Volume Studies of Triton X-100 in Aqueous and Mixed Solvents

Abstract

In the present study densities of Triton X-100 + water, Triton X-100 + water + propanol and Triton X-100 + water + fructose have been measured at different concentrations and temperatures. Apparent molar volumes have been calculated for the studied systems from density values to study the effect of added co-solute/co-solvent on the structure of the studied systems. The apparent molar volumes in Triton X-100 + water + additive (2- propanol/fructose) systems are found to be less than in Triton X-100 + water system. This is attributed to entrapping, as well as hydrogen bonding. With increase of temperature the apparent molar volume (f_v) values increase in all the studied systems, owing to breaking of water structure at higher temperature.