在高效率和可控制的玻璃水凝中动态激活机械孔
Qing Li1,2, Haoxue Du1, Yang Chen1,2
1Department of Polymer Science and Engineering, Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University, Hangzhou, China.
Advanced materials (Deerfield Beach, Fla.)
|March 12, 2026
概括
研究人员开发了一种坚固的玻璃状水凝,可以有效地激活聚合物中的机制体 (反应力分子). 这一突破增强了对机械响应材料的控制,使软机器人和适应性结构的新应用成为可能.
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
- 机械化学 机械化学
背景情况:
- 在聚合物中集成的机械光体提供可调的机械响应性质.
- 控制软材料中力传递到机械体的力传递至关重要,但具有挑战性.
- 现有的软材料缺乏高效和可预测的机械激活.
研究的目的:
- 开发一种坚固的玻璃状水凝,用于有效和可控的机械孔激活.
- 研究材料特性与机械反应之间的关系.
- 为高性能机械反应性水凝建立一个可通用的战略.
主要方法:
- 使用机械孔交叉连接的聚 ((phenyl acrylate-co-acrylamide)) 制造一个坚固的玻璃状水凝.
- 通过将水凝从状过渡到玻璃状状态来调整机械性能.
- 机械激活效率和力传递动态的表征.
主要成果:
- 玻璃状水凝在低压力 (∼0.2) 时显著增强机械孔激活 (高出几十倍).
- 材料的粘弹性过渡控制了链的移动性,并改善了力传递.
- 显而易见的机械体 (spiropyran, rhodamine) 表现出相反的速率依赖性,揭示了复杂的力-时间尺度效应.
- 有图案的水凝显示出空间和时间编程的机械反应.
结论:
- 为设计高性能机械响应性水凝制定了一个可通用的策略.
- 提供了关于聚合物材料中强力诱导的键裂变的见解.
- 开发的水凝平台可以精确控制机械响应功能.
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