Surface analysis of a new heparinisable material (PUPA) based on polyurethane (PU) and poly(amido-amine)(PAA) components has been performed by ATR FTIR, ESCA, SIMS and AFM measurements, on both dry and hydrated states. This analysis demonstrated that, as for PU, the PUPA surface is enriched in the soft-segment phase in air. Despite its crosslinked nature, PUPA underwent surface restructuring in aqueous media, as demonstrated by ATR FTIR, ESCA and AFM measurements, and the hydrophilic, high-energy component (PAA) migrated to the surface. This reorientation process is reversible and involves only the outermost surface layers

Magnani, A., Barbucci, R., Lewis, K.B., Leach Scampavia, D., & Ratner, B.D. (1995). Surface properties and restructuring of a cross-linked polyurethane-poly(amido-amine) network. JOURNAL OF MATERIALS CHEMISTRY, 5(9), 1321-1330 [10.1039/jm9950501321].

Surface properties and restructuring of a cross-linked polyurethane-poly(amido-amine) network

MAGNANI, AGNESE;
1995

Abstract

Surface analysis of a new heparinisable material (PUPA) based on polyurethane (PU) and poly(amido-amine)(PAA) components has been performed by ATR FTIR, ESCA, SIMS and AFM measurements, on both dry and hydrated states. This analysis demonstrated that, as for PU, the PUPA surface is enriched in the soft-segment phase in air. Despite its crosslinked nature, PUPA underwent surface restructuring in aqueous media, as demonstrated by ATR FTIR, ESCA and AFM measurements, and the hydrophilic, high-energy component (PAA) migrated to the surface. This reorientation process is reversible and involves only the outermost surface layers
Magnani, A., Barbucci, R., Lewis, K.B., Leach Scampavia, D., & Ratner, B.D. (1995). Surface properties and restructuring of a cross-linked polyurethane-poly(amido-amine) network. JOURNAL OF MATERIALS CHEMISTRY, 5(9), 1321-1330 [10.1039/jm9950501321].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/41300