Author/Authors :
Bongiovanni، نويسنده , , R. and Malucelli، نويسنده , , G. and Lombardi، نويسنده , , V. and Priola، نويسنده , , A. and Siracusa، نويسنده , , V. and Tonelli، نويسنده , , C. and Di Meo، نويسنده , , A.، نويسنده ,
Abstract :
New copolymers obtained by free radical copolymerization of methylmethacrylate (MMA) with a methacrylic monomer containing a perfluoropolyether structure (PFEUMA) were prepared. The products showed an excellent surface activity evidencing hydrophobic and lipophobic properties; the water contact angle of the films was always very high (>105°). Angle-dependent XPS analyses showed that the fluorinated monomer preferentially concentrates at the air surface and a fluorine gradient normal to the surface is present. A surface reorganisation was observed by changing the interface. The wettability increased when the films were dipped in water; after complete drying, the surface regained its hydrophobicity.
