SKM 2023 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 58: Polymer Networks and Elastomers

CPP 58.4: Vortrag

Freitag, 31. März 2023, 10:30–10:45, ZEU 255

From Cellulose Model Surfaces to Elastic Papers — •Cassia Lux, Sabrina Kerz, and Regine von Klitzing — Department of Physics, Technische Universität Darmstadt, Darmstadt, 64289, Germany

Paper is a hierarchical material based on cellulose which allows functionalization on different length scales. The resulting multilateral use is especially crucial with regard to reducing plastic use and waste and replacing it with renewable and biodegradable resources. A novelty in terms of mechanical robustness and controllable fluid mechanics are elastic papers, prepared through the functionalization of the paper fibers with elastomeric particles that concentrate at the fiber-fiber-crossing points. In order to study the particle adsorption, planar cellulose model surfaces are prepared to mimic the surface of a cellulose fiber. The elastomeric core shell particles have a pH-responsive polycation shell, and their adsorption to the negative charged cellulose surface is studied in dependence of e.g. pH-value. The question we adress is how the properties of the cellulose surface and the particles affect the contact area between both, and what effect the adsorption has on the elastic behavior of the particles. A special focus is to resolve the core-shell structure of the particles by Indentation AFM.