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聚 (乙烯基酒精) /碳氧化纤维素纳米纤维复合液凝柔性应变传感器

Xiaorui Liu¹, Zijian Wu², Taghrid S Alomar³

¹School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China; State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China.

International journal of biological macromolecules

|April 9, 2025

概括

这项研究开发了一种新型的双交联凝,使用碳化纤维素纳米纤维和酸. 由此产生的复合水凝表现出优越的机械强度,导电性和应变传感能力,使其适用于先进的传感器应用.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
纳米技术纳米技术

背景情况:

水凝是多功能材料,在各种领域都有应用.
开发具有增强机械和传感性能的先进水凝对于下一代设备至关重要.
双交叉连接策略提供了一个有前途的途径来提高水凝性能.

研究的目的:

引入一种用于构建双重交叉连接的水凝网络的新方法.
为了研究不同金属离子对水凝性质的影响.
评估水凝作为应变传感器和 triboelectric纳米发电机中的潜力.

主要方法:

制造聚乙醇 (PVA) /碳氧化纤维素纳米纤维 (CNF-C) 复合水凝,使用和酸 (TA).
合并金属 (Na+,Zn2+,Al3+) 形成一个多交叉连接的3D网络通过酸,协调和键.
机械强度,导电性,热稳定性和应变感应能力的表征.

主要成果:

这种PVA/CNF-C复合液凝具有出色的机械强度 (1.6 MPa),导电性 (1.7 × 10−2 S/cm) 和热稳定性 (在60°C时95%).
3+离子显著增强了水凝网络的张力,弹性和灵敏度.
水凝表现出强大的应变传感能力,产生2V的稳定开放电路电压作为自动供电的 triboelectric纳米发电器传感器.

结论:

通过结合化学和物理交叉连接,成功开发了一种双重交叉连接的水凝系统,具有可调节的特性.
加入Al3+离子对于优化水凝的机械适应性和灵敏性至关重要.
开发的水凝显示出适用于灵活电子和自动供电传感器件的巨大潜力.

关键词:

碳氧化纤维素纳米纤维的纳米纤维.灵活的应变传感器水凝是一种水凝.

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