TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The fluorinated monomers containing sulfonyl groups are F2=CF-O-CF2-CF2-SO2F, F2C=CF-O-(CF2CXF-O)n', -CF2-CF2-SO2F, vinylsulfonylfluoride, F2C=CF-Ar-SO2F, whereX = Cl, F, or CF3;n' = 1-10;Ar = aryl ringThe radical initiators can be branched perfluoroalkanes of formula CaFx, halogenated compounds of formula ClO2S(CF2)nSO2Cl, periodic perfluoropolyether compounds having oxidizing power of 0.8-6 (preferably 1-3.5), of structure T-O-Rf-(O)c-T', wherex = 2a+2;a = 5-15 (preferably 7-11);n = 4-10;T,T' = -CF3, -CF2CF3, -CF2CF2CF3;c = integer of oxidizing power;Rf = perfluoropolyether chain having number average molecular weight of 1000-30000 (preferably 4000-20000, and comprising -(CF2O)-, -(CF2CF2O)-, -(CF2CF2CF2O)-, -(C3F6O)- (preferably (CF2O)a', (CF2CF2O)b', (CF2O)c', (C3F6O)d';a'-d' = molecular weight;b'/a' = 0.1-40 (preferably 0.5-20);c'/d' = 0.01-5.Preferred Composition: The sulfonic fluorinated ionomers comprise 54-71 mole % monomeric units deriving from TFE, 45-28 mole % monomeric units derived from vinylsulfonylfluoride, and 0.4-3 mole % monomeric units derived from (I).    TECHNOLOGY FOCUS - POLYMERS - Preferred Materials: The support is foamed, preferably bistretched polytetrafluoroethylene (PTFE).Preferred Method: The supported membrane is impregnating a prepared solution containing solution of sulfonic ionomer in fluorinated solvent, radical initiators, and bis-olefin of formula (I). The solvent can be hexafluoroxylene, perfluorohexane, perfluorooctane, perfluorobenzene, perfluoropolyether solvents, or fluoroether solvents. A porous support of foamed PTFE is dipped in the solution between two metal plates containing metal frame for 10 seconds to 1 minute. The dipping is repeated many times. The impregnated membrane is crosslinked at the crosslinking temperature for reaction time equivalent to 6 half-lives of used initiator. The supported membranes can also be obtain by casting or press. The plate/frame/film system is put in press oven by applying 500-2000 (preferably 750-1500) kg. The sulfonyl groups are transformed into sulfonic groups (SO2F) by salification for transforming the -SO2F into SO3K form, and acidification for transforming -SO3K to SO3H form. The salification is carried out in basic aqueous solution of potassium hydroxide or sodium hydroxide in 5-40degreesC for 4-40 hours. The acidification is carried out in aqueous solution containing 20 wt.% hydrochloric acid at 25degreesC for 5 hours. EXAMPLE - 17.64 g Ionomer were dissolved in 82.36 g perfluoropolyether solvent of formula CF3CF2O-(C3F6O)3-CF2H to obtain an ionomeric solution which was added with 5 wt.% ionomer of bis-olefin and 4 wt.% radical initiator. A PTFE porous support was dipped in the obtained mother solution for 10 seconds. The impregnation was repeated 3 times. The ionomeric solution was removed from the support by a roller system. The supported membrane obtained from the impregnation was dried at 50degreesC for 1 hour to eliminate the fluorinated solvent. The membrane was crosslinked at 270degreesC for 35 seconds, and activated in -SO3H to have a weight loss of 12.6%. The resulting membrane had % hydration of 40% and the release temperature of interstitial water was 175degreesC. This membrane was used as acid catalyst in Friedel-Craft acylation reaction to test its efficiency. It was found that in reacting 4-methoxyacetophenone at 22degreesC, the conversion reached 95% in 25 minutes, and 100% in 37 minutes.