Tailored coatings for polymer surface permeability control in microfluidic devices

Conference: MikroSystemTechnik - KONGRESS 2009
10/12/2009 - 10/14/2009 at Berlin, Germany

Proceedings: MikroSystemTechnik

Pages: 4Language: englishTyp: PDF

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Schmidt, M.; Rupp, J.; Zinober, S.; Müller-Fiedler, R. (Robert Bosch GmbH, Corporate Sector Research and Advance Engineering, Robert-Bosch-Platz 1, 70839 Gerlingen, Germany)
Zheng, Z. (Reutlingen University, Department of Applied Chemistry, Alteburgstr. 150, 72762 Reutlingen, Germany)
Müller, C. (3University of Freiburg, Department of Microsystems Engineering, Laboratory for Process Technology, Georges-Köhler-Allee 103, 79110 Freiburg, Germany)

In this paper we present our results on the control of the permeability of polymer surfaces by organic silicon-oxide-layers (Aquacer(c), Lipocer(c)). The goal of our investigations is to guarantee defined physical and (bio)chemical surface properties over the shelf time of microfluidic devices made of polymers. A suitable coating providing the required surface energy and at the same time minimum permeability for migrating contaminants is needed. Inorganic silicon-oxidelayers and the two mentioned types of silicon-oxide-layers with organic content were tested regarding their barrier effect on gases, their surface energy and their adhesion to polymer surfaces.