SKM 2023 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 35: Poster Session II

CPP 35.62: Poster

Wednesday, March 29, 2023, 11:00–13:00, P1

Synthesis of diblock copolymer brush surfaces to control the adaptation time to water — •Benjamin Leibauer¹, Andres de los Santos Pereira², Ognen Pop-Georgievski², Hans-Jürgen Butt¹, and Rüdiger Berger¹ — ¹Max-Planck institute for polymer research, Ackermannweg 10, 55128 Mainz — ²Institute of macromolecular chemistry cas, Heyrovskeho nam. 1888, 162 00, Praha 6

The Young's model describes the wetting behavior of an ideal surface. Recently, Butt et al. presented a model, which connects adaptation processes of the surface to dynamic contact angles. We developed an experimental setup, which allows measuring adaptation processes. The adaptation model was experimentally verified by Li et al. using surfaces coated with films of statistical copolymers. We synthesize polymer brush surfaces with the aim to control the adaptation time scale upon wetting and dewetting systematically. We used the surface-initiated atom transfer radical polymerization / ATRP to selectively synthesize diblock copolymer brushes. We prepared poly(2-hydroxyethyl methacrylate) (PHEMA) as a hydrophilic block from the surface and we grafted polystyrene (PS)) as hydrophobic block on top of the PHEMA block. By regulating the architecture and thickness of the polymer brush we can tune surface adaption to wetting.