The overall and preferential sorption of alcohol−toluene mixtures in homogeneous blends of
poly(acrylic acid) and poly(vinyl alcohol) were determined. Both the overall solubility and the
equilibrium sorption selectivity were strongly dependent on the composition of the blend and of
the liquid feed mixture. The swelling of the blends increased with increasing poly(acrylic acid)
content and with increasing alcohol content in the liquid mixtures. Alcohols were sorbed
preferentially over toluene in all cases tested. The equilibrium sorption selectivity increased
with increasing poly(vinyl alcohol) content in the blends and with decreasing alcohol content in
the liquid mixtures. The equilibrium sorption selectivity was predicted by a model which was
derived from Flory−Huggins thermodynamics. The agreement between the predicted and the
experimental results was very good. In addition, the equilibrium sorption results were compared
with the pervaporation results, and this clearly shows that preferential sorption dominates the
pervaporation selectivity in the systems studied.
ter verkrijging van de graad van doctor aan de Universiteit Twente, op gezag van de rector magnificus, prof. dr. Th.J.A. Popma, volgens besluit van het College van Dekanen in het openbaar te verdedigen op donderdag 7 januari P993 te 15.00 uur door geboren op 29 december 1959 te Kimhae, Korea PO 3. Liquid mixture separation by pervaporation P2 3.1. Separation of aqueous mixtures E? 3.2. Separation of organic-organic mixtures 13 4 Survey of pervaporation research in organidorganic separation 13 4.1. Separation of polar/non-polar solvent mixtures 14 4.2. Separation of aromatiddiphatic mixtures 1% 4.3. Separation of diphatic hydrocarbons P9 4 . 4 . Separation of aromafie isomers 21 5. S h c h e of the thesis 22 References 24
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.