A comparative study of the breakdown of cyclohexane- and toluene-based microemulsions by pervaporation technique

Microemulsion breakdown by pervaporation technique: Effect of the alkyl chain length of n-alkanol, a cosurfactant of the microemulsion

“…The activation energy results indicate that the pervaporation performance should be in the following order: I 1-prop < I 1-but < I 1-pent < I 1-hex . It is worthy to recall [16] that the microemulsions in the feed became turbid at temperatures higher than 45-50 • C after 3 h operation; however, for lower temperatures, this cloudiness appeared after 24 h. Fig. 8 illustrates the effect of temperature on the enrichment factor β for systems I and II.…”

“…To name but a few, there are the separation of organic components from aqueous or organic mixtures and of azeotropic binary systems [8][9][10][11], the control of oxidation of primary alcohols [12,13] and of some equilibrated reactions [14], and the breakdown of microemulsions [7,15,16]. Caron used the pervaporation technique to study the singlet oxygenation of some hydrophobic and natural substrates (α-terpinene, β-citronellol, and β-pinene) in microemulsion [17].…”

“…In continuation of our work on the microemulsion breakdown by means of pervaporation [7,15,16], we wish to report the results of the effect of the chainlength of n-alkanols used as cosurfactants, on the permselectivity parameters.…”

Interplay between grain structure and protein adsorption on functional response of osteoblasts: Ultrafine‐grained versus coarse‐grained substrates

“…The separation of liquid organics having close boiling points, or being azeotropic mixtures, isomers, or heat‐sensitive mixtures, is better performed by the pervaporation technique, mainly because of its simplicity and cost effectiveness. Not only has pervaporation been a convenient process for the separation of mixtures, but its performance also has been extended to other undertakings such as the control of organic reactions1–5 and the breakdown of microemulsions 6–8. That pervaporation has gained a weighty foothold in separation processes on a laboratory scale is owed to the diversity of membrane types, which, in turn, is due to the availability of polymeric materials 9.…”

Styrene–butadiene rubber membranes for the pervaporative separation of benzene/cyclohexane mixtures

“…Not only has pervaporation been a convenient process for the separation of mixtures, but its performance also has been extended to other undertakings such as the control of organic reactions [1][2][3][4][5] and the breakdown of microemulsions. [6][7][8] That pervaporation has gained a weighty foothold in separation processes on a laboratory scale is owed to the diversity of membrane types, which, in turn, is due to the availability of polymeric materials. 9 A membrane is selected for the separation of binary mixtures according to its solubility parameter (d m ) vis-à-vis that of one of the two components (d i ); that is, the closer d m is to d i , the more selective the membrane will be for component i, and the better the separation will be.…”