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三重生物启发的形状记忆微腔,具有强大且可切换的粘附性
Yufen Li1, Xiaofeng Liu1, Ruijie Wang1
1State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China.
ACS nano
|November 20, 2023
概括
研究人员开发了一种由大自然启发的新型智能粘合剂. 这种粘合剂使用形状记忆聚合物来控制对固体和液体的粘合,从而实现可编程的运输和高粘合强度.
科学领域:
- 材料科学 材料科学 材料科学
- 生物启发工程 生物启发工程
- 表面科学是一门学科.
背景情况:
- 具有可切换粘合力的智能粘合剂对于机器人和传感器等先进应用至关重要.
- 现有表面对固体和液体具有可控制的粘附力,往往缺乏足够的粘附强度来进行强大的固体抓地.
- 有需要的粘合剂,提供可调节的粘合不同表面和液体.
研究的目的:
- 开发一种新型智能粘合剂,可切换粘合到固体和液体.
- 为了克服现有的可切换粘合剂粘合强度不足的局限性.
- 探索生物灵感设计的潜力,以实现先进的粘合功能.
主要方法:
- 设计了一种三重生物灵感粘合剂,采用由形状记忆聚合物 (SMP) 制成的微腔.
- 利用SMP的形状记忆效应和玻璃 (R-G) 阶段过渡来控制粘附.
- 研究了通过调整温度和施加力的方法,将粘附转换为光滑固体,粗固体和水滴.
主要成果:
- 开发的粘合剂证明了对固体和液体的可切换粘合.
- 通过形状锁定和负压效应,在固体上 (高达420kPa) 实现了高附着强度.
- 展示了使用可切换粘附的固体和液体的可编程运输.
结论:
- 这种新的生物灵感形状记忆智能粘合剂有效地克服了现有的可切换粘合剂的局限性.
- 设计的粘合剂提供了高粘合强度和可控制的对各种表面和液体的粘合力.
- 这项技术为机器人,传感器和可编程材料运输领域的应用提供了巨大的潜力.
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