Experimental investigation of plasma-immersion ion implantation treatment for biocompatible polyurethane implants production

摘要

Modification of the surface layer of polyurethane with plasma-immersion ion implantation (PHI) and studying its physical and chemical changes have been discussed in this paper. The goal of the research was to obtain carbonized layer allowing creating biocompatible polyurethane implants. The experiments of PHI treatment in various modes were performed. The investigation of the modified surface characteristics was carried out by observing the kinetics of free surface energy for two weeks after treatment. The regularities between treatment time and the level of free surface energy were detected. The explanation of high energy level was given through the appearance of free radicals in the surface layer of material. The confirmation of the chemical activation of the polyurethane surface after PHI treatment was obtained.