scholarly journals Alternative method to predict activity coefficients at infinite dilution of hydrocarbons in aqueous solutions

2015 ◽  
Vol 3 (6) ◽  
pp. 1073-1082 ◽  
Author(s):  
Gonzalo Astray ◽  
◽  
Jorge Morales ◽  
Miriam González-Temes ◽  
Juan C. Mejuto ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Infinite Dilution ◽  
Alternative Method

Activity coefficient at infinite dilution of aqueous solutions of nonionic hydrocarbon and fluorocarbon surfactants as well as their ternary mixtures

2015 ◽  
Vol 70 (1) ◽  
Author(s):  
Katarzyna Szymczyka ◽  
Anna Tarabab
Keyword(s):  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Infinite Dilution ◽  
Ternary Mixtures ◽  
Interface Tension ◽  
Surface Tension Data ◽  
Ethylene Glycols ◽  
Solid Liquid Interface ◽  
Triton X ◽  
Solid Liquid

AbstractActivity coefficients at infinite dilution of the aqueous solutions of nonionic hydrocarbon surfactants, p-(1,1,3,3- tetramethylbutyl) phenoxypoly(ethylene glycols), Triton X-100 (TX100) and Triton X-165 (TX165), fluorocarbon surfactants, Zonyl FSN-100 (FSN100) and Zonyl FSO-100 (FSO100) and their ternary mixtures were determined from the Gracia-Fadrique et al. method for non-volatile compounds. The values of activity coefficients were calculated taking into account the surface tension data of the studied systems at 293K and compared to those determined on the basis of the values of the contact angle of solutions on the polytetrafluoroethylene (PTFE) and polymethyl methacrylate (PMMA) surfaces and the solid-liquid interface tension.

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