AVS 55th International Symposium & Exhibition
    Applied Surface Science Tuesday Sessions
       Session AS-TuP

Paper AS-TuP17
Temperature Effect on Chemical and Physical Stability of Low Pressure Plasma Polymerised Coatings for Biological Applications

Tuesday, October 21, 2008, 6:30 pm, Room Hall D

Session: Aspects of Surface Analysis Poster Session
Presenter: S.I. Cho, Pusan National University, South Korea
Authors: S.I. Cho, Pusan National University, South Korea
M. Dhayal, University of Washington
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The effects of substrates heating on chemical and physical stability of plasma polymerised acrylic acid films were studied. The change in surface chemistry and surface morphology were characterised by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). XPS result showed that C(=O)OX functionality was unstable with the substrate heating temperature whereas C-OX and C=O functionalities were quite stable for 400oC. Small changes in the surface roughness were observed when substrate was heated upto 100oC. Higher temperature heating had created well structured patterns at the surface. Effect of these patterns and change in surface functionalities on cell growth and no-specific adsorption of proteins will be discussed.