Gas Transport Properties of Some Fluorine-Containing Polyethers 

 -  Ind. Eng. Chem. Res., 49(23), p.11948-11953, 2010 .
<br/><br/> A set of five polyethers containing the highly fluorinated monomer, 1,3-bis(1,1,1,3,3,3-hexafluoro-2- pentafluorophenylmethoxy-2-propyl)benzene (12F-FBE), were obtained by polycondensation with the monomers: biphenol, bisphenol F, bisphenol A, bisphenol AF, and a biphenol-substituted spirodilactam. Significant physical properties to characterize their application as membranes for gas separations processes were measured. They exhibit little crystalline domains (below 8