Thermal/Near-Infrared Light Dual-Responsive Reversible Two-Way Shape Memory cEVA/2D-MoO2 Composite for Multifunctional Applications
Thermal/Near-Infrared Light Dual-Responsive Reversible Two-Way Shape Memory cEVA/2D-MoO2 Composite for Multifunctional Applications
复制标题
适用于多功能应用的热/近红外光双响应可逆双向形状记忆 cEVA/2D-MoO2 复合材料
DOI：
10.1002/marc.202100056
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发表时间：
2021-03-17
影响因子：
4.6
通讯作者：
Zhu, Chengshen
中科院分区：
文献类型：
--
作者：
Hao, Chaobo;Wei, Cong;Zhu, Chengshen
光响应可逆双向形状记忆聚合物（2W-SMPs）由于具有间接加热、清洁和远程控制等优点，在许多领域都有很大的应用前景。在这项工作中，通过将极少量的2D非层状二氧化钼纳米片（2D- moo2）掺杂到半晶聚乙烯-醋酸乙烯酯（EVA）网络中，制备了具有热红外和近红外（NIR）光诱导可逆双向形状记忆效应（2W-SME）的复合材料。本文首次报道了采用2D-MoO2作为光热填料的光致可逆双向形状记忆复合材料。打开和关闭近红外光后，由于2D-MoO2优异的光热特性和稳定性，复合材料表现出显著的光致可逆2W-SME。基于复合材料和电路设计了用于传感应用的光驱动致动器，其中灯作为警报可以在响应近红外光时升起和褪色。基于光响应可逆2w - smp的优点，设计了一种完全柔性、无燃料的自行走软机器人。此外，这种复合材料作为轻型燃料起重机，能够提升和降低是其自重3846倍的负载。结果表明，所制备的复合材料在作动器、自动行走软机器人和起重机等方面具有广阔的应用前景。
Light-responsive reversible two-way shape memory polymers (2W-SMPs) are highly promising for many fields due to indirect heating, clean, and remote control. In this work, a composite with both thermal- and near-infrared (NIR) light-induced reversible two-way shape memory effect (2W-SME) is prepared by doping extremely little quantities of 2D non-layered molybdenum dioxide nanosheets (2D-MoO2) into semicrystalline poly(ethylene-co-vinyl acetate) (EVA) networks. This is the first report on light-induced reversible two-way shape memory composites employing 2D-MoO2 as photothermal fillers. Upon switching the NIR light on and off, due to the excellent photothermal feature and stability of 2D-MoO2, the composite exhibits remarkable light-induced reversible 2W-SME. A light-driven actuator for sensing applications is designed based on the composite and the circuit, where the lamp acting as an alarm can raise and fade upon responding to NIR light. A completely flexible, fuel-free self-walking soft robot is designed based on the advantages of the light-responsive reversible 2W-SMPs. Additionally, the composite acting as a light-fueled crane is able to lift and lower a load that is 3846 times its own weight. The results demonstrate that the prepared composite has a promising prospect for applications as actuators, self-walking soft robot and crane.