A Photoorganizable Triple Shape Memory Polymer for Deployable Devices
A Photoorganizable Triple Shape Memory Polymer for Deployable Devices
复制标题
用于可部署设备的光组织三重形状记忆聚合物
DOI：
10.1002/smll.202106443
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发表时间：
2021
期刊：
影响因子：
13.3
通讯作者：
Yanlei Yu
中科院分区：
文献类型：
--
作者：
Jiahao Sun;Bo Peng;Yao Lu;Xianxi Zhang;Jia Wei;Chongyu Zhu;Yanlei Yu
受生物体的作用和愈合过程的启发，开发使用刺激响应材料或智能可展开设备的可展开设备，希望实现远程控制可编程变形，并进行额外的原位修复，以执行多种任务，同时延长其在航空航天中的使用寿命。本文报道了一种由含偶氮苯的热塑性聚氨酯组成的光可组织三重形状记忆聚合物（POTSMP）。在紫外线和可见光照射下，该POTSMP执行两种临时形状的任意编程和精确的逐步形状恢复，显示适应不同航空航天应用的各种临时形状。另一方面，在紫外线照射下，可以在几秒钟内实现快速的光重构，包括光重塑和光焊接，从而实现原位局部加工和永久形状的修复。结合这些光组织操作，具有复杂2D/3D结构的可变形设备无需特殊模具即可轻松制造。设想这种POTSMP可以扩大光响应tsmp在智能可部署设备中的潜力。
Inspired by the action and healing process from living organisms, developing deployable devices using stimuli-responsive materials, or smart deployable devices, is desired to realize remote-controlled programmable deformation with additional in situ repair to perform multiple tasks while extending their service life in aerospace. In this work, a photoorganizable triple shape memory polymer (POTSMP) is reported, which is composed of an azobenzene-containing thermoplastic polyurethane. Upon UV and visible illumination, this POTSMP performs arbitrary programming of two temporary shapes and precise and stepwise shape recovery, exhibiting various temporary shapes adapted to different aerospace applications. On the other hand, rapid light-reconfiguration in seconds, including light-reshaping and light-welding, is achieved in response to UV irradiation, allowing in situ localized process and repair of permanent shape. Combining these photoorganizable operations, deformable devices with complex 2D/3D structures are facilely manufactured with no need of special molds. It is envisioned that this POTSMP can expand the potential of photoresponsive TSMPs in smart deployable devices.