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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2014.24.6.484

Prediction of Affinity between Membrane and Esters Using Solubility Parameter  

Song, Kun-Ho (Gangwon Institute for Regional Program Evaluation)
Lee, Kwang-Rae (Dept. of Chemical Engineering, Kangwon National Univ.)
Publication Information
Membrane Journal / v.24, no.6, 2014 , pp. 484-490 More about this Journal
Abstract
To find out the feasibility of the separating/enriching esters from aqueous solution using FASs (Fluoloalkyl-silanes-coupling agent)-surface modified hydrophobic membrane, the solubility parameter of FASs was obtained and compared with those of esters and water. The value of the solubility parameter of FASs (${\delta}_t=16.9$) was almost same with those of esters (ethyl acetate ${\delta}_t=18.1$, propyl acetate ${\delta}_t=18.0$, ethyl propionate ${\delta}_t=17.9$, butyl acetate ${\delta}_t=17.4$, ethyl butyrate ${\delta}_t=17.0$). However, the calculated value of the solubility parameter of water was ${\delta}_t=47.8$, which was far from the value of the solubility parameter of FASs (${\delta}_t=16.9$). This means that the FASs-modified membrane has a much higher affinity to esters than water. The experimental results of permeation flux of esters used in this study showed that the order of permeation flux predicted by the solubility parameter was almost coincide with experimental results. It might be concluded that the solubility parameter may be applicable for a separating/enriching flavors from aqueous natural-flavor solution, in which esters are main components of natural flavors.
Keywords
membrane; FASs; esters; solubility parameter; affinity;
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Times Cited By KSCI : 2  (Citation Analysis)
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