Pervaporation of benzene/cyclohexane mixtures through aromatic polyamide membranes 

 -  Journal of Membrane Science, 185(2), p.193-200, 2001 .
<br/><br/> A series of novel aromatic polyamides based on the 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (BAPPH)and 2,2-bis[4-(4-aminophenoxy)phenyl]propane (BAPPP)with various aromatic diacids were investigated for pervaporation separation of benzene/cyclohexane binary system. The aromatic polyamide membranes exhibited a benzene-permselectivity for all the feed compositions and the permeation rate increased with increasing benzene in the feed solution. The fluorine-containing polyamide membranes were swollen in benzene but only slightly in cyclohexane. A separation factor toward benzene, a permeation rate, and a pervaporation separation index (PSI)value through the fluorine-containing polyamide membrane (F-3)for a 50 wt. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>FLUORINE-CONTAINING AROMATIC POLYAMIDES<br/>BENZENE/CYCLOHEXANE<br/>PERVAPORATION<br/>MEMBRANE