Reversibly Switchable Topography Enabled by Melting and Crystallization of Melt-Electrowritten Polymer Fibers

IF 8.7 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Materials Letters Pub Date : 2024-12-29 DOI:10.1021/acsmaterialslett.4c02057

Ilia Sadilov, Gissela Constante, Martin Dulle, Dennis Schönfeld, Thorsten Pretsch and Leonid Ionov*,

引用次数: 0

Abstract

We report the fabrication of topographically structured surfaces with reversibly switchable topography by using melt electrowriting (MEW). In particular, MEW was used to produce continuous high aspect ratio lamellae of semicrystalline polyester urethane with a poly(1,10-decylene adipate) soft segment. The switching of topography is achieved by the expansion and contraction of the polymer caused by the melting and crystallization of the soft segment that results in the buckling of lamellae. In the molten stage, lamellae can be buckled in a certain direction by capillary forces caused by water droplets between two lamellae. In addition, the interlamellar distance between neighbors’ lamellae can be managed by water droplets. Finally, we have demonstrated the possibility of creating electrically conductive surfaces with switchable conductivity achieved by the reversible buckling of the lamellae.

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熔融电写入聚合物纤维的熔融和结晶可实现可逆的可切换形貌

我们报道了用熔体电解（MEW）制造具有可逆可切换形貌的地形结构表面。特别是，MEW用于生产具有聚（1,10-己二酸癸烯）软段的连续高长宽比半晶聚酯聚氨酯片。形貌的切换是通过软段的熔化和结晶引起的聚合物的膨胀和收缩来实现的，从而导致片层的屈曲。在熔融阶段，两片片之间的水滴所产生的毛细力会使片片向一定方向屈曲。此外，相邻片层之间的片层间距可以通过水滴来控制。最后，我们已经证明了通过片层的可逆屈曲来创造具有可切换导电性的导电表面的可能性。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.