Regensburg 2022 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 12: Poster 1
CPP 12.3: Poster
Montag, 5. September 2022, 18:00–20:00, P1
Cellulose-based programmable, robust, and healable actuators for smart packaging devices — •Qing Chen1, Benedikt Sochor1, Andrei Chumokov1, Marie Betker1,2, Nils Ulrich3,4, Maria E. Toimil-Molares4, Korneliya Gordeyeva2, Daniel Söderberg2, Volker Körstgens5, Matthias Schwartzkopf1, Peter Müller-Buschbaum5, and Stephan Roth1,2 — 1DESY, 22607 Hamburg, Germany — 2KTH, 10044 Stockholm, Sweden — 3GSI Helmholtz Center, 64291, Darmstadt, Germany — 4TU Darmstadt, 64287 Darmstadt, Germany — 5TU Munich, 85748 Garching, Germany
Programmable actuators are promising candidates for smart devices. Herein, we fabricated a cellulose-based actuator with polyvinyl alcohol (PVA) and polystyrene sulfonate (PSS) as reinforcement. Driven by moisture, the actuators bend in programmable directions when we cut the films at different oblique angle with respect to its radial axis. Furthermore, the actuator shows an exceptional elongation-at-break of 77%. Ultra-Small-Angle X-ray Scattering and scanning electron microscopy examination at the necking region of the film yields the formation of cavities with an average width of 75 nm. They decrease to 16.5 nm with an elevating relative humidity (RH) from 0 to 100% and remains constant when the RH decreases from 100% to 0%. The programmable, robust, and healing ability of the actuator suggests its potential as smart packaging devices.