超伸缩,粘合,导电和防多网波酸以基凝用于可穿戴式应变传感器和VOC吸收
Ruixue Wang1, Chunjiao Liu1, Zhongwan Li1
1Hebei Provincial Key Laboratory of Photoelectric Control on Surface and Interface, and College of Science, Hebei University of Science and Technology, Yuxiang Street 26, Shijiazhuang 050080, PR China.
ACS sensors
|October 15, 2024
概括
这项研究开发了一种具有特殊强度,自我愈合和导电性的三重网络水凝. 先进的水凝传感器在极端温度下表现出强大的性能,并作为挥发性有机化合物的有效吸附剂.
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:
- 酸以为基础的水凝具有很高的抗拉强度和自我愈合特性.
- 现有的水凝在实现高导电性,耐性和粘合性方面面临着挑战,用于实际的应变传感器应用.
- 开发先进的水凝对于扩大其在生物研究和传感器技术中的使用至关重要.
研究的目的:
- 设计一种具有增强机械,电气和热性能的新型三重网络水凝.
- 改进水凝应变传感器,用于需要导电性,抗性和附着性的实际应用.
- 研究水凝作为应变传感器和挥发性有机化合物的吸附剂的潜力.
主要方法:
- 使用聚乙烯醇 (PVA),乙烯胺聚合物 (PEI) 和聚烯胺-联合酸 (PAM-Co-AA)) 制造三重网络水凝.
- 加入3 - 碳基-4 - 基酸 (CFBS) 作为交叉链接剂,糖醇 (GL) 作为耐低温,化 (NaCl) 作为导电.
- 机械性能 (抗拉强度,性),导电性,自愈能力,低温性能,应变感应灵敏度和吸附能力的表征.
主要成果:
- 这种水凝具有超高的抗拉强度 (4100%,266.8 kPa),高性 (6.5 MJ/m3) 和优异的低温耐受性 (-60 °C).
- 由于CFBS交叉连接,实现了高电导率 (1.83 mS/cm) 和出色的自我修复能力.
- 对人类活动表现出敏感的应变传感 (GF高达8.7),在-20°C下保持功能,并对挥发性有机化合物表现出高吸附能力 (甲醇:1.80g/g,:1.50g/g).
结论:
- 开发的三重网络水凝克服了传统水凝的局限性,为先进的应变传感器提供了有前途的材料.
- 水凝在极端温度下强大的性能及其吸附能力为可穿戴电子和环境监测的应用开辟了新的途径.
- 这项工作为设计功能性水凝提供了一个多功能平台,为各种技术应用提供了量身定制的特性.
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