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Gas plasma polymer surface modification methodologies for the reduction of device-related infection

Posted on:2002-05-09Degree:M.A.ScType:Thesis
University:University of Toronto (Canada)Candidate:Sahi, Vijendra PratapFull Text:PDF
GTID:2461390011993486Subject:Engineering
Abstract/Summary:
This research attempted to developed materials resistant to device related infection. First, water, ammonia or carbon dioxide plasmas were utilized in a remote microwave plasma (RMP) reactor. Increased hydrophilicity of the surface in water and ammonia plasma treatments was noted. A reduction in colony forming units was noted with water plasma treatment when challenged with Pseudomonas aeruginosa under static flow in the presence of ciprofloxacin.; To illustrate the ability of attaching a drug delivery system activation with primary amines was required with ammonia plasma on ethylene treated polyurethane (optimised separately). An optimum using the RMP plasma was found at 408 sccm, 20 W power and 1 minute.; Attachment of a drug delivery system through primary amine groups was assessed using isocynate chemistry and a commercial fluroalcohol. Surfaces with the activation registered a fluorine signal proving the feasibility of attaching a drug delivery system through this chemistry.
Keywords/Search Tags:Plasma, Drug delivery system
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