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Tarasova, Anna
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article
UV grafting of a vinyl monomer onto a methanol plasma polymer
Abstract
In this study we have shown that a uniformly grafted, low protein fouling polyethylene glycol methacrylate (PEGMA) coating can be generated from the surface of a methanol plasma polymer film via photopolymerization. It is proposed that the graft polymerization occurs primarily from the generation and initiation of surface radicals by the applied ultraviolet light, in the methanol plasma polymer surface and the PEGMA monomer in solution. The surface properties of the coatings were characterised using X-ray Photoelectron Spectroscopy (XPS) and Atomic Force Microscopy (AFM). AFM analysis showed the interaction forces obtained between a silica probe and the PEGMA graft coatings to be repulsive and long-ranged. The AFM and XPS results demonstrated the low fouling nature of the surface polymerized PEGMA coating, following exposure to a protein solution.