Surface Characterization of Biomaterials

Referencia Apresentador Autores
(Instituição)
Resumo
14-078
Rosarioa Espinosa Meléndez Meléndez, R.E.(Anton Paar); The zeta potential provides information about the surface charge and gives insight into the interaction of biomaterials with their environment. A biomaterial is a synthetic or natural material which is used for replacing and enhancing tissue and organs or accelerating wound healing. Biomaterials include permanent and temporary implants, and also medical devices for extra corporeal application. Common to all types of biomaterials is their interaction with biological environments when performing their dedicated functions. Acceptance or repulsion of a biomaterial device by the human body is determined by the biocompatibility of the material’s surface. Tailoring and controlling surface properties is therefore a major challenge in biomaterial engineering. Surface analysis techniques provide the key to the successful development of biomaterials. SurPASS™ 3 principle: The surface charge at the solid/water interface determines the electrostatic interaction between the biomaterial surface and dissolved components in the aqueous phase. Surface charge is related to the electrokinetic or zeta potential. For macroscopic solids the zeta potential is determined by the measurement of streaming potential or streaming current. Streaming potential and streaming current are electrokinetic effects that arise from the motion of the liquid phase relative to the solid surface.
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