Perfluorooctanoic acid aqueous solutions

Fig. 4.20 Surface tensions of aqueous solutions of perfluoroalkyl segmented alkanoic acids CF3(CF2)6CF(CF3)(CH2)ioCOONa (O), CF3(CF2)6CH=CH(CH2)8 COONa ( ), tetradecanoic acid (—), perfluorooctanoic acid ( ), and its ammonium salt ( ). (From Ref. 62. Reproduced by permission of the American Chemical Society.)...

Fig. 5.7 Hexadecane contact angles on polymer surfaces with perfluorooctanoic acid adsorbed from aqueous solutions. (From Ref. 33. Reproduced by permission of the American Chemical Society.)...

Fig. 5.8 Cos e versus surface tension of aqueous surfactant solutions on paraffin at 25°C ( ) Aerosol OT in 0.1 MNaCI (O) perfluorooctanoic acid. (From Ref. 34. Reproduced by permission of Academic Press.)...

Bongiovanni et al. [215] solubilized peifluorocarbons in aqueous solutions of commercial-grade perfluorooctanoic acid (about 80% Cg) and its sodium salt. The observed increase in solubility of perfluorooctanoic acid when neutralized with sodium hydroxide was related to lowering of the Ki afft point. W/0 and OAV isotropic monophasic liquid systems were obtained by changing the pH of the system. 

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