Creating Hydrophobic Foils From Biopolymer Blends Using Mechanical Microimprinting

Author:

Liu Hang1,Zagler Michaela2,Nase Michael3,Weber Katharina4,Albrecht Joachim4

Affiliation:

1. Aalen University: Hochschule Aalen Research Institute for Innovative Surfaces FINO Beethovenstr. 1 73430 Aalen GERMANY

2. University of Hof: Hochschule fur angewandte Wissenschaften Hof Institute for Biopolymers and Sustainability ibp GERMANY

3. Hochschule Hof: Hochschule fur angewandte Wissenschaften Hof Institute for Biopolymers and Sustainability ibp GERMANY

4. Aalen University of Applied Sciences: Hochschule Aalen Research Institute for Innovative Surfaces FINO 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.

Publisher

Wiley

Subject

Physical and Theoretical Chemistry,Atomic and Molecular Physics, and Optics

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