OXYGEN-ION BEAM AND PLASMA-INDUCED BLOOD COMPATIBILITY OF POLYETHERURETHANE

Surface blood compatibility of ion beam and plasma treatment on polyet herurethane has been studied. O+ implantation was performed at 80keV w ith various doses. O-2 plasma treatment was carried out at 100W with v arious exposure times. The results indicated that surface anticoagulab ility was enhanced in varying degrees and anticalcific behavior was no t decreased. X-ray photoelectron spectroscopy and electron spin resona nce 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 th e surface, which affected the surface biomedical behavior.