| 引用本文: | 王志航,徐泉,李维军,董潇潇,赵弘.基于荧光水凝胶的功能表面器件[J].中国表面工程,2019,32(5):45~54 |
| WANG Zhihang,XU Quan,LI Weijun,DONG Xiaoxiao,ZHAO Hong.Functional Surface and Its Device Based on Flouresence Hydrogel[J].China Surface Engineering,2019,32(5):45~54 |
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| 摘要: |
| 基于水凝胶体系的功能材料及应用发展迅速，在包括组织工程、能源存储、柔性器件等领域展现出广阔的应用前景。采用聚乙烯醇、壳聚糖和琼脂糖构建水凝胶主体结构，并添加羟乙基纤维素增塑保湿，添加碳量子点赋予材料荧光效应。制备获得了兼具有优良的自修复性能和优异拉伸性能的多网络结构水凝胶，具有高达33 MPa的拉伸强度并能够在多种媒介环境下实现快速的自修复，在空气中60 s自修复效率达93%。研究发现复合水凝胶材料的荧光强度同表面所受压强呈负相关性，而同其拉伸伸长率呈正相关。数据拟合证实，通过检测水凝胶的荧光强度可以监控其变形率，而结合水凝胶和仿壁虎表面结构制备出能够黏附于多种表面的压强检测器，通过对器件荧光强度的检测能够探测液下环境压强。该研究拓展了荧光水凝胶材料的应用途径，有望用于液下压强探测、工程结构失效监控等。 |
| 关键词: 水凝胶 压强测试器 仿壁虎表面 碳量子点 |
| DOI：10.11933/j.issn.1007-9289.20190415003 |
| 分类号:TB332;Q692 |
| 基金项目:国家自然科学基金（51875577）；北京市科技新星计划（Z171100001117058）；清华大学摩擦学重点实验室开放基金（SKLTKF16A06） |
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| Functional Surface and Its Device Based on Flouresence Hydrogel |
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WANG Zhihang, XU Quan, LI Weijun, DONG Xiaoxiao, ZHAO Hong
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State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
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| Abstract: |
| There are many functional applications based on hydrogel material, including tissue engineering, energy storage, and flexible devices. The main structure was constructed by polyvinyl alcohol, chitosan and agarose. Hydroxyethyl cellulose was added to enhance plasticity and maintain moisture. Carbon quantum dots were added to bring fluorescent property. The multi-network hydrogel had excellent self-healing properties and excellent tensile strength up to 33 MPa and the self-healing could take place quickly in a variety of media. The self-healing efficiency in air reached up to 93% in just 60 s. The result show that the fluorescence intensity of the hydrogel is negatively correlated with the pressure on the surface, and is positively correlated with its tensile elongation. The data fitting confirmation that the tensile elongation can be monitored by detecting the fluorescence intensity of the hydrogel, and combine composite hydrogel with gecko-like structure to form a pressure detector that can adhere to various surfaces. The liquid pressure is confirmed to be monitored by detecting the fluorescence intensity of the device. This research expands the application of fluorescent hydrogel materials and expects to be used for pressure detection under liquid and engineering structure failure monitoring. |
| Key words: hydrogel pressure detector gecko-inspired surface carbon quantum dots |
