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Front Cover: Creating Hydrophobic Foils From Biopolymer Blends Using Mechanical Microimprinting (ChemPhysChem 20/2023) |
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| Authors: | Hang Liu Michaela Zagler Prof Dr Michael Nase Prof Dr Katharina Weber Prof Dr Joachim Albrecht |
| Institution: | 1. Aalen University, Research Institute for Innovative Surfaces FINO, Beethovenstr. 1, 73430 Aalen, Germany;2. Hof University of Applied Sciences, Institute for Biopolymers and Sustainability ibp, Alfons-Goppel-Platz 1, 95028 Hof, Germany |
| Abstract: | The surface topography of biodegradable polymer foils is modified by mechanical imprinting on a submillimeter length scale. The created patterns strongly influence the wetting behavior and allow the preparation of hydrophobic surfaces with controlled solid-liquid interaction. A detailed analysis of anisotropic surface patterns reveals that the observed effect arises from a combination of topographical and compositional changes that are introduced to the surface. As a main result it is found that an individual combination of material and structure is required for the production of water-repellent biopolymer foils that are highly attractive for packaging applications. |
| Keywords: | hydrophobic biopolymer microimprinting anisotropic wettability tribology |