MaterialsWeek 2025
Poster
Biomimetic morphological surface design for improved interfacial properties of polymers
AT

Dipl.-Ing. Annika Thormann

Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS

Thormann, A. (Speaker)¹; Bissinger, M.²; Friedmann, A.¹; Langer, L.³; Menzel, M.¹
¹Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale); ²Merseburg University of Applied Sciences (HoMe); ³Martin Luther University Halle-Wittenberg, Halle (Saale)

The gecko uses the hierarchical and fibrillar structures of its feet to adhere to vertical surfaces, while the lotus leaf is known for its self-cleaning properties based on its micro- and nanostructured surface. The Fraunhofer IMWS has developed a patented method for large-scale structuring of polymer surfaces, inspired by biological models. Laser processing can be used to create microstructures on aluminum molds, followed by anodic oxidation, which forms a nanoporous oxide layer with vertically aligned nanopores. These molding tools can be integrated into various plastic manufacturing processes (injection molding). In addition to increasing the effective surface area, material properties such as wettability and antimicrobial properties can be precisely adjusted without additional additives or coatings, which preserves the purity of the polymer and simplifies subsequent recyclability.

Abstract

Abstract

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Poster

Poster

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