Plasma Polymerization of Perfluorotributylamine (FC-43)

Abstract

Preparation of films by plasma polymerization of FC-43 (perfluorotributylamine) and coating of CA (cellulose acetate) or TPX [poly (4-methyl pentene-1)] with FC-43 were studied. The films formed by plasma polymerization contain CF₂, CF₂-CF₃, C-N, C=O, N-H and OH groups. In the presence of these functional groups, degradation of the film was initiated at a low temperature (100°C). The surface energy of CA and TPX is reduced by coating with plasma polymerized FC-43, particularly in the dispersion part of the surface energy, γ_s^d. The blood clotting time ratio of the film to glass was increased with a decrease of γ_s^d. The biocompatibility of films was found improved, especially in the plasma polymerized FC-43 on CA film. The permeability constant ratios, P_O2/P_N2 and P_Ar/P_N2, increased in plasma polymerized FC-43 on TPX film. Thus the plasma polymerized FC-43 on TPX films could be applied to the gas separation processes and the membrane type artificial lung.