SURFACE PROPERTIES OF THIN FILMS OF POLY(2,3,4,5,6-PENTAFLUOROSTYRENE) AND DIBLOCK COPOLYMERS BASED ON 2,3,4,5,6-PENTAFLUOROSTYRENE AND 2-HYDROXYETHYL METHACRYLATEстатья
Аннотация:The surface properties of thin films obtained by applying poly(2,3,4,5,6-pentafluorostyrine) (PPFS) and amphiphilicdiblock copolymers (DC) of 2,3,4,5,6-pentafluorostyrene (PFS) and 2-hydroxyethylmethacrylate (HEMA) on smooth substrates (silicone plates) from solutions in THF and DMF, respectively, in the presence and absence of a cross-linking agent– hexamethylenediisocyanate (HMDI) were studied. Comparative testing of the DC films obtained in the presence and in the absence of HMDI showed that the DC films have the higher water and diiodomethane(DI) contact angles: θН2О = 108 ± 2º and θCH2I2 = 83 ± 1º, than a film of PPFS (θН2О = 98 ± 1º and θCH2I2 = 74 ± 1º).The energy characteristics of the thin films surfacewere determined by the results of measuring the water and DI contact angles. It was established that DC films have a lower specific free surface energy than films based on PPFS.
