01790nam a2200277Ia 4500003001000000005001700010040000900027090001100036245007700047490005400124520082800178650003201006650001701038650001401055650001601069700001901085700002101104700002201125700001701147700001801164856015601182942001401338008004101352999001701393952010201410MX-MdCICY20260521091117.0  cCICY  aB-860610aHigh transport parameters and free volume of perfluorodioxole copolymers0 vJournal of Membrane Science, 126, p.123-132, 19973 aPermeability (P)and diffusion (D)coefficients of perfluoro-2,2-dimethyl-1,3-dioxole-tetrafluoroethylene copolymers were determined with respect to different gases (He, H2, 02, N2, CO2, hydrocarbons Ct-C3). The copolymers with large content of perfluorodioxole comonomer exhibit high permeability with respect to lighter gases comparable to that of poly(trimethylsilyl propyne). However, the copolymers studied are much more permselective than the latter polymer. Free volume as estimated via Bondi's method and free volume size distribution parameters which were determined by means of positron annihilation lifetimes (PAL)method are also unusually high if compared with other glassy polymers. A novel correlation of the P and D values, as well as of the solubility coefficients S with the PAL parameter 7-414 are reported.14aPERFLUORODIOXOLE COPOLYMERS14aPERMEABILITY14aDIFFUSION14aFREE VOLUME12aAlentiev, A.Y.12aYampolskii, Y.R.12aShantarovich, V.R12aNemser, S.M.12aPlaté, N.A.40uhttps://drive.google.com/file/d/1hU2HxxAuUdaxUWeGWGQSa9lyt86dRPtY/view?usp=drivesdkzPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx  2LoccREF1250602s9999    xx |||||s2   |||| ||und|d  c18849d18849  00102Loc40708F1aCICYbCICYcREd2025-06-25l0oB-8606r2025-06-25 12:47:23w2025-06-25yREF1