Oxygen Ion Beam and Plasma Induced Blood Compatibility of Polyetherurethane

Surface blood compatibility of ion beam and plasma treatment on polyetherurethane has been studied. O⁺ implantation was performed at 80keV with various doses. O₂ plasma treatment was carried out at 100 W with various exposure times. The results indicated that surface anticogulability was enhanced in varying degrees and anticalcific behavior was not decreased. X-ray photoelectron spectroscopy and electron spin resonance analysis showed that the two methods not only broke some chemical bonds, but also produced some new N-O and C-O bonds and radicals in the surface, which affected the surface biomedical behavior.