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Process for hydrophilizing surfaces of fluidic components and systems

  • US 20050255579A1
  • Filed: 04/14/2005
  • Published: 11/17/2005
  • Est. Priority Date: 04/26/2004
  • Status: Active Grant
First Claim
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1. A process for producing a film of a hydrophilic polymer on the inner surfaces of a fluidic component, the hydrophilic polymer having a surface wettability for aqueous solutions which is higher than the surface wettability of the inner surfaces of the fluidic component in the absence of a film of the hydrophilic polymer, comprising:

  • a) subjecting the inner surfaces of the fluidic component to a physicochemical pre-treatment, b) contacting the inner surfaces of the fluidic component with a solution of the hydrophilic polymer, c) replacing the solution of the hydrophilic polymer with a gaseous medium in such a manner that firstly the inner surfaces of the fluidic component remain wetted with part of the solution of the hydrophilic polymer, and d) removing the solvent to produce a film of the hydrophilic polymer on the inner surfaces of the fluidic component.

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