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Bulletin of Materials Science

, Volume 21, Issue 6, pp 445–450 | Cite as

Si+ and N+ ion implantation for improving blood compatibility of medical poly(methyl methacrylate)

  • D J Li
  • F Z Cui
Biomaterials

Abstract

Si+ and N+ ion implantation into medical poly(methyl methacrylate) (PMMA) were performed at an energy of 80 keV with fluences ranging from 5×1012 to 5×1015 ions/cm2 at room temperature to improve blood compatibility. The results of the blood contacting measurementsin vitro showed that the anticoagulability and anticalcific behaviour on the surface morphology were enhanced after ion implantation. No appreciable change in the surface morphology was detected by scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) analysis indicated that ion implantation broke some original chemical bonds on the surface to form some new Si- and N-containing groups. These results were considered responsible for the enhancement in the blood compatibility of PMMA.

Keywords

Ion implantation poly(methyl methacrylate) blood compatibility 

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Copyright information

© Indian Academy of Sciences 1998

Authors and Affiliations

  • D J Li
    • 1
  • F Z Cui
    • 1
    • 2
  1. 1.State Key Lab. of Surface Modification by Three BeamDalian University of TechnologyDalianP.R. China
  2. 2.Department of Materials Science and EngineeringTsinghua UniversityBeijingP.R. China

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