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Int. J. Mol. Sci. 2013, 14(2), 3254-3264; doi:10.3390/ijms14023254

Structure Formation of Ultrathin PEO Films at Solid Interfaces—Complex Pattern Formation by Dewetting and Crystallization

Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, D-01069 Dresden, Germany
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Received: 4 January 2013 / Revised: 25 January 2013 / Accepted: 28 January 2013 / Published: 5 February 2013
(This article belongs to the Special Issue Self-Assembled Soft Matter Nanostructures at Interfaces)
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Abstract

The direct contact of ultrathin polymer films with a solid substrate may result in thin film rupture caused by dewetting. With crystallisable polymers such as polyethyleneoxide (PEO), molecular self-assembly into partial ordered lamella structures is studied as an additional source of pattern formation. Morphological features in ultrathin PEO films (thickness < 10 nm) result from an interplay between dewetting patterns and diffusion limited growth pattern of ordered lamella growing within the dewetting areas. Besides structure formation of hydrophilic PEO molecules, n-alkylterminated (hydrophobic) PEO oligomers are investigated with respect to self-organization in ultrathin films. Morphological features characteristic for pure PEO are not changed by the presence of the n-alkylgroups. View Full-Text
Keywords: dewetting; DLA; PEO; PEG; thin film; crystallization dewetting; DLA; PEO; PEG; thin film; crystallization
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Braun, H.-G.; Meyer, E. Structure Formation of Ultrathin PEO Films at Solid Interfaces—Complex Pattern Formation by Dewetting and Crystallization. Int. J. Mol. Sci. 2013, 14, 3254-3264.

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