Relaxation phenomena in AOT-water-decane critical and dense microemulsions

Analysis of phase diagram and microstructural transitions in an ethyl oleate/water/Tween 80/Span 20 microemulsion system using high-resolution ultrasonic spectroscopy

“…Ultrasonic spectroscopy has a considerable potential in this area as demonstrated previously (Lang et al, 1980;Ballaro et al, 1980;Mehta and Kawaljit, 1998;Wines et al, 1999;Letamendia et al, 2001). This technique employs an ultrasonic wave (MHz frequency acoustical waves), which probes the elastic rather than electric and magnetic characteristics of materials.…”

The critical behavior of {water+AOT+decane} microemulsion with various molar ratios of water to AOT

“…The general concepts of scaling and universality are well established [1,2]. Recently, the study of critical phenomena in fluids has been extended to binary micellar solutions and multi-component microemulsion systems [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Critical microemulsion systems are of considerable interest because a controversy from experiments and theories was raised about whether these systems near the critical points belong to the 3D-Ising universality class [8,21].…”

Ultrasonic Characterisation of W/O Microemulsions - Structure, Phase Diagrams, State of Water in Nano-Droplets, Encapsulated Proteins, Enzymes

“…Ultrasonic spectroscopy has a considerable potential in this area as demonstrated previously (Lang et al, 1980;Ballaro et al, 1980;Zana et al, 1983;Cao et al, 1997;Mehta & Kawaljit, 1998;Wines et al, 1999;Letamendia et al, 2001). This technique employs an ultrasonic wave (MHz frequency range), which probes the elastic characteristics of materials.…”