使用上循环TPEE的可逆传感技术:制造pH和光敏材料,实现可持续监测
Chun-Ting Chang1, Kai-Chuan Kuo1,2, Jhih-Hao Ho1
1Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan.
Small (Weinheim an der Bergstrasse, Germany)
|March 8, 2024
概括
这项研究介绍了一种使用回收材料的新型双响应智能传感器. 传感器根据光线和pH值改变颜色,为环境检测提供可持续的解决方案.
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
- 传感器技术 传感器技术
背景情况:
- 多响应材料对于环境监测至关重要,但往往需要复杂的制造.
- 开发可持续和可扩展的方法来生产这些先进的材料是一个重大挑战.
研究的目的:
- 使用简单,可扩展的制造工艺开发一种双响应 (光和pH) 的智能传感器.
- 在传感器制造中利用从回收聚乙烯二甲酸盐 (r-PET) 中提取的高循环热塑性聚弹性体 (TPEE).
主要方法:
- 使用层层组装 (LbL) 技术,将奇托和梅洛酸-COOH (MC-COOH) 沉积在TPEE基板上.
- 基于螺旋的传感器膜 (TPEE-CH-SP) 是使用正电荷的奇托和负电荷的MC-COOH溶液制造的.
- 通过紫外线辐射诱导的螺旋-COOH (SP-COOH) 到MC-COOH的异构化和随后的pH诱导的MC-COOH的质子化,实现了双重反应.
主要成果:
- 在TPEE-CH-SP膜上,由于螺旋异构化,在紫外线暴露时,颜色从无色变为紫色.
- 暴露在化 (HCl) 和酸 (HNO3) 蒸汽下,导致颜色从紫色变为黄色,表明pH响应.
- 制造的传感器表现出可逆和持久的特性.
结论:
- 一个简单而可扩展的LbL组装工艺被成功地用于从回收TPEE中创建一个双响应的智能传感器.
- 基于螺旋的传感器显示了环境变化检测应用的潜力.
- 这项工作强调了使用回收材料用于先进的功能传感器的可行性.
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