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CNTs对软机器人双向双层聚合物执行器的光响应的影响,具有两个形态化机制

Ronen Verker¹, Asaf Bolker¹, Ehud Galun²

¹Space Environment Department, Soreq Nuclear Research Center, Yavne 81800, Israel.

ACS applied materials & interfaces

|February 18, 2026

概括

碳纳米管 (CNTs) 通过增加热吸收来增强光驱动形状记忆的聚合物执行器. 这些纳米复合材料表现出更快,更大的运动,并揭示了由水分驱动的二次形状变化机制.

科学领域:

聚合物科学聚合物科学
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

在双层驱动器中使用的多分子聚合物 (polyPOSS) 和卡普顿聚合物.
响应光的形状记忆聚合物对于先进的执行技术至关重要.

研究的目的:

研究碳纳米管 (CNTs) 对卡普顿/polyPOSS双层执行器光响应性的影响.
探索这些执行器中的双重形状变化机制.

主要方法:

在PolyPOSS纳米复合材料中加入不同度的CNT (高达0.5%重量%)
光响应,机械性能和光学吸收的表征.
在热和水分驱动条件下分析形状变化机制.

主要成果:

CNT在照射时显著增加光学吸收和温度升高,从而导致更强的启动.
与不含CNT的驱动器相比,含CNT的驱动器表现出高达3倍的更大和更快的运动.
确定了一种二次的,依赖于湿度的形状变化机制 (湿度膨胀系数不匹配),它独立于CNT运行.

结论:

在基于PolyPOSS的执行器中,CNT是光驱动执行的有效增强剂.
执行器具有双重变形机制 (热驱动和湿气驱动),它们相互竞争并取决于环境条件.
了解这些机制对于优化各种应用中的执行器性能至关重要.

关键词:

执行器执行器执行器碳纳米管是如何使用的的光响应性.改变形态的机制.双向形状记忆聚合物的双向形状记忆.

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