X-ray photoelectron spectroscopy (XPS) was used to define the chemical composition of the outermost surface layer and the surface modification of a plasma-coated phospho-silicate glass (identified as BVA) when immersed in potassium phosphate buffer or in phosphate-buffered human albumin solution. Its behaviour was compared with that of a soda-lime-based glass (identified as BVH) treated in the same way. The surface percentage composition of plasma-sprayed glass was consistent with the bulk composition. After incubation with buffer, a Ca-P-rich layer developed only on the surface of BVA glass. Human serum albumin was bound reversibly to both glasses; however, the protein completely covered the BVA glass surface within 24 h, with the formation of a mixed albumin-Ca-P layer, whereas 4 days of incubation were necessary for complete coverage of the BVH glass surface. The thickness of the organic/inorganic overlayer has also been estimated.

Iucci, G., Frontini, A., Infante, G., Furlani, C., Avigliano, L., Rosato, N., et al. (2000). Surface modifications of plasma-sprayed bioglasses upon interaction with phosphate buffer and albumin solutions: a photoelectron spectroscopy study. SURFACE AND INTERFACE ANALYSIS, 30, 40-44.

Surface modifications of plasma-sprayed bioglasses upon interaction with phosphate buffer and albumin solutions: a photoelectron spectroscopy study

AVIGLIANO, LUCIANA;ROSATO, NICOLA;PALUMBO, GIUSEPPE;
2000-01-01

Abstract

X-ray photoelectron spectroscopy (XPS) was used to define the chemical composition of the outermost surface layer and the surface modification of a plasma-coated phospho-silicate glass (identified as BVA) when immersed in potassium phosphate buffer or in phosphate-buffered human albumin solution. Its behaviour was compared with that of a soda-lime-based glass (identified as BVH) treated in the same way. The surface percentage composition of plasma-sprayed glass was consistent with the bulk composition. After incubation with buffer, a Ca-P-rich layer developed only on the surface of BVA glass. Human serum albumin was bound reversibly to both glasses; however, the protein completely covered the BVA glass surface within 24 h, with the formation of a mixed albumin-Ca-P layer, whereas 4 days of incubation were necessary for complete coverage of the BVH glass surface. The thickness of the organic/inorganic overlayer has also been estimated.
2000
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore BIO/10 - BIOCHIMICA
English
Biomaterials; Plasma spraying; Potassium compounds; Silicates; Surface structure; Surface treatment; X ray photoelectron spectroscopy; Bioglass; Phosphosilicate glass; Potassium phosphate; Glass
Iucci, G., Frontini, A., Infante, G., Furlani, C., Avigliano, L., Rosato, N., et al. (2000). Surface modifications of plasma-sprayed bioglasses upon interaction with phosphate buffer and albumin solutions: a photoelectron spectroscopy study. SURFACE AND INTERFACE ANALYSIS, 30, 40-44.
Iucci, G; Frontini, A; Infante, G; Furlani, C; Avigliano, L; Rosato, N; Del Principe, D; Palumbo, G; Polzonetti, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/52140
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