Lugger Sean J D, Mulder Dirk J, Schenning Albertus P H J
Stimuli-responsive Functional Materials and Devices, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.
Institute for Complex Molecular Systems, Eindhoven University of Technology, Den Dolech 2, 5600 MB, Eindhoven, The Netherlands.
Angew Chem Int Ed Engl. 2022 Feb 1;61(6):e202115166. doi: 10.1002/anie.202115166. Epub 2021 Dec 20.
The application of reprocessable and reprogrammable soft actuators is limited by the synthetic strategies, 3D-shaping capabilities, and small deformations. In this work, melt-processable supramolecular soft actuators based on segmented copolymers containing thiourethane and liquid crystal segments have been prepared via sequential thiol addition reactions in a one-pot approach using commercially available building blocks. The actuators demonstrated immediate, reversible response and weightlifting capabilities with large deformations up to 32 %. Through exploiting the supramolecular cross-links, the material could be recycled and reprogrammed into 3D actuators and welded into an actuator assembly with different deformation modes. Our work offers a one-pot synthesis and straightforward melt-processable approach to prepare supramolecular soft actuators with large deformations that can be reprocessed and reprogrammed into arbitrary 3D shapes.
可再加工和可重新编程的软致动器的应用受到合成策略、3D成型能力和小变形的限制。在这项工作中，基于包含硫脲和液晶链段的嵌段共聚物的可熔融加工的超分子软致动器，已通过使用市售构建块的一锅法中的顺序硫醇加成反应制备而成。这些致动器表现出即时、可逆的响应以及高达32%的大变形举重能力。通过利用超分子交联，该材料可以被回收并重新编程为3D致动器，并焊接成具有不同变形模式的致动器组件。我们的工作提供了一种一锅法合成和直接可熔融加工的方法，以制备具有大变形且可再加工和重新编程为任意3D形状的超分子软致动器。
