弹性乙烯基性尿热的结构-属性关系及其作为闭环可回收的应变传感器的应用
Youwei Ma1, Francesco Stellacci1,2
1Institute of Materials, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
Macromolecules
|March 3, 2025
概括
这项研究引入了具有闭环可回收性的乙烯基体尿 (VU) 热聚. 这些可回收弹性体显示出可持续可穿戴传感器的潜力,在使用后有效回收组件.
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
- 可持续化学 可持续化学
背景情况:
- 推进循环材料经济需要闭环可回收的热.
- 了解结构-属性关系是开发可持续材料的关键.
研究的目的:
- 开发一种具有闭环可循环回收的乙烯酸性尿 (VU) 热固体.
- 研究VU弹性体的结构性质关系和可回收性.
- 探索VU弹性体作为可穿戴传感器可持续基板的潜力.
主要方法:
- 通过聚甲酸乙酸 (aPTHF) 和三-2-氨基乙烯) 胺 (TREN) 的反应合成VU热聚.
- 循环拉伸试验用于评估弹性和残余应变.
- 使用HCl和CDCl3的双相混合物进行水解研究,以评估VU链接稳定性.
- 在VU矩阵内使用多壁碳纳米管 (MCNs) 制造和测试应变传感器.
主要成果:
- 在100%的应变后,VU聚合物具有高弹性,残余应变低 (3-9%).
- 机械和减压特性可通过aPTHF分子量和交叉链密度进行调整.
- VU热聚在水中稳定,但在酸性条件下解离,在更高的温度/HCl度下速度加快.
- 一个应变传感器展示了强大的运动检测.
- 在酸性处理后,aPTHF (>90%) 和TREN (86%) 得到了很好的恢复,使用未损坏的MCN.
结论:
- 聚乙烯型尿 (VU) 热提供闭环可回收性和可调节性质.
- 这些弹性体显示出作为可穿戴传感器等先进应用的可持续材料的前景.
- 构成单体和功能填充物的有效回收是可以实现的,支持循环经济模式.
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