Physical changes study of surfactants mixture in the presence of nano titanium dioxide

Abstract

The research included a study of the viscosity during the formation of worm-like or filamentous micelles of a binary mixture of surfactants and their susceptibility. The mixture of Anionic surfactant Sodium Dodecyl Sulfate (SDS) with cationic surfactant Cetyl Pyridinium Chloride (CPC) was studied at different temperatures (283.15, 303.15, 323.15, and 343.15)K, It was found that the highest viscosity value was at the ratio of 2: 8 of 3% wt of CPC and SDS, respectively, which indicates the formation of filamentous micelles. The research also included a study of the effect of ethyl alcohol with concentrations (0.001, 0.01, 0.1, 1.0)M, as well as at different temperatures on the formation of worm-like micelles at the ratio 2: 8 of CPC and SDS respectively. The thermodynamic functions, as well as the activation energy were calculated by the effect of Ethyl alcohol . The results showed an increase in the formation of worm-like micelles when increasing the concentration of ethyl alcohol as a result of interference with the composition of micelles and the formation of hydrogen bonds with the polar groups of the surfactant molecule . Therefore the mixture viscosity increased at (283.15)K, from 5.3741 Pa.s ×102 before adding (1.0) M, ethyl alcohol to be 5.7077 Pa.s x 102 after alcohol addiction. The research also included preparing titanium dioxide at the nanoscale and diagnosing it with AFM, TEM techniques. The results showed an increase in the formation of micelles with an increase in the concentration of nanoscale titanium dioxide, as the viscosity of the mixture increased at the temperature (283.15)K, from 5.7077 Pa.s ×102) before adding (0.001)M, titanium dioxide and (1.0)M, ethanol to 8.6318 Pa.s×102 after addition.