Regensburg 2007 – scientific programme

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DS: Fachverband Dünne Schichten

DS 15: Poster Session

DS 15.11: Poster

Tuesday, March 27, 2007, 15:00–17:00, Poster B

Creation of microstructured poly(glycidyl-methacrylate) surfaces — •Viatcheslav Gruzdev, Anton Kiriy, and Manfred Stamm — Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, D-10069 Dresden, Germany

Here we describe a novel method for fabricating of microstructured polymer brushes based on grafting of monocarboxylated end-functional polymers to the microstructured poly(glycidyl-methacrylate) (PGMA) anchor layer. To achieve desirable morphology of PGMA layer two methods were applied. In the first method solutions of PGMA in different solvents spin-coated onto Si-wafer form porous, chainlike or patched PGMA surfaces. Type and size of PGMA structures depends on used solvent, modification of a substrate, concentration of PGMA and used add-ons. Addition of 1-0.5 % (mass.) of 1,4-butandiol to solutions of PGMA greatly increases reproducibility of the method and gives possibility to obtain PGMA structures from different solvents. Second method is based on the phase separation of PGMA/PS blend in thin film. Upon spincoating, blend forms regions of PS and PGMA on the surface. Chemical or termical fixation of PGMA structures on the surface followed by extraction of PS gives structured PGMA surface. Lateral dimensions of PGMA structures in both methods were in the range of 100-500 nm. Microstructured polystyrene brush and bicomponent PS/P2VP brush have been prepared. Combination of scanning probe microscopy, ellipsometry and contact angle measurements was used to study surface properties and morphology.