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Jehnichen, D. ; Pospiech, D. ; Keska, R. ; Ptacek, S. ; Janke, A. ; Funari, S. ; Timmann, A. ; Papadakis, C.M.
Analysis of thin nanostructured block copolymer films by GISAXS and AFM

The aim of this work was to develop nanostructured polymer surfaces. For this purpose, diblock copolymers of poly(n-pentyl methacrylate) and poly(methyl methacrylate) with different block lengths and block length ratios were chosen, which show a bulk morphology with stacked lamellae or hexagonally packed cylinders. The bulk structure was characterized by SAXS investigations in dependence on temperature. Lamellar morphologies were found in a wide range of block length ratios. A set of polymers was selected for thin film investigations, and the phase behaviour of dip-coated films was studied by both AFM and GISAXS. In most cases, parallel ordered morphologies were formed, which is a result of the wetting behaviour of block copolymers. However, in a few cases, laterally ordered and demixed morphologies were detected, which are an essential precondition to obtain later on surfaces with regions of different wettability.

Source
Journal of Nanostructured Polymers and Nanocomposites 4, 119-128

DOI
http://www.jnpn.org/03,04,04,01.html

Published
April 2009
 
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