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A Physical Model for the Titanium-Tissue Interface

HEALY KEVIN E.; DUCHEYNE, PAUL
ASAIO Transactions: July-September 1991
SLIDE FORUM 3—BIOMATERIALS I: PDF Only

X-ray photoelectron spectroscopy (XPS) was used to determine changes in titanium oxide composition, oxide stoichiometry, and adsorbed surface species as a function of exposure to model physiologic environments. The oxide on titanium became heterogeneous and polarized as a function of exposure. Changes included an increase in surface hydroxyl groups, and adsorption of H2PO4− and HPO42-. The heterogeneous nature of the surface led to preferential adsorption of lipoproteins, glycolipids, or both from serum.

©1991 American Society of Artificial Internal Organs