Influence of Irradiation with Helium Ions on the Surface Properties of Kynar Polyvinylidene Fluoride

The surface energy characteristics of polyvinylidene fluoride irradiated with accelerated helium ions have been investigated. The bombardment of the polymer with helium ions leads to an increase in the acid–base component of the surface free energy and surface polarity due to the appearance of polar functional groups in the surface layer. Determination of the acidity parameters of the irradiated polymer surface indicates the predominance of acidic functional groups on the surface layer as a result of irradiation. It is likely that a decrease in the dispersion component of the surface free energy with the energy of ions and radiation dose is associated with the carbonization of irradiated polymer surface.