Critical behaviour of { water +n-nonane+ sodium di(2-ethyl-1-hexyl)sulphosuccinate } microemulsions

Effects of the dispersed droplet sizes on the critical behavior of pseudobinary microemulsion

“…At present, some experimental controversies about whether microemulsion system belongs to 3D-Ising model or Fisher normalization model remain unsolved [1,2] . The critical behavior for microemulsion of {water/sodium di(2-ethylhexyl) sulfosuccinnate (AOT)/n-alkane} with a constant molar ratio of water to AOT (ω =40.8) in our previous works [3][4][5] has been studied and the results have shown that the critical behavior of the microemulsion system may be described as 3D-Ising characteristics in a region sufficiently close to the critical temperature. These results were confirmed by other experiments [6] .…”

Critical phenomenon of nonaqueous microemulsion (AOT/DMA/decane)

“…(7), and the values of ρ 1 , ρ 2 , and ρ d were calculated from Eqs. (10)- (12). The results are shown as lines in Fig.…”

“…For the mixture with ω = 2.86 and φ = 0.390, a higher consolute critical point was observed. Below the critical temperature T c the sample separates into two microemulsion phases of different compositions but with the same ratio ω [10][11][12][13]. Therefore such a microemulsion system can be regarded as a pseudobinary mixture [10,11].…”

“…The general concepts of scaling and universality are well established. Recently, the study of critical phenomena in fluids has been extended to multicomponent microemulsion and micellar systems [9][10][11][12][13][14][15]. A few experimental studies have been carried out to determine the critical exponent β that characterizes the shape of the coexistence curve and have observed an Ising value of the critical exponent β [10][11][12].…”

Coexistence curves of critical nonaqueous microemulsions of (AOT+DMA+nonane) and (AOT+DMA+octane)

“…Up to now, a great deal of progress has been made on this traditional system both experimentally and theoretically [1][2][3]. While in the novel genre, water has been replaced by polar nonaqueous organic solvents in the ''water pool'' to form a nonaqueous microemulsion system [4][5][6].…”