Effect of toluene extraction on Biomer surface: I. ESCA, ATR/FTIR, contact angle analysis and biological properties
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N Nurdin1, P François, A Magnani
1Group of Applied Physics, University of Geneva, Switzerland.
Journal of Biomaterials Science. Polymer Edition
|January 1, 1995
Abstract:
Biomer is a poly(ether-urethane-urea) block copolymer widely used as biomedical devices. Extraction process of this polymer has purified its surface of low molecular weight polyurethane chains and Santowhite Powder additive. ESCA and ATR/FTIR have suggested a homogenization of the polymer by enrichment of the first layers with poly(aminomethacrylate) additive after extraction. Therefore, the surface of the extracted Biomer exhibits a different wettability and biological response. The treatment causes a significant decrease in fibronectin adsorption and induces a reduction in Staphylococcus aureus adhesion.