丙烯酸/丙烯酰胺/碳纳米管复合水凝胶及其传感性能研究

doi:10.11896/cldb.21030154

材料导报

2022, Vol. 36

Issue (12): 21030154-7 https://doi.org/10.11896/cldb.21030154

高分子与聚合物基复合材料

丙烯酸/丙烯酰胺/碳纳米管复合水凝胶及其传感性能研究

吕颖¹, 胡永琴^1,2, 厚琛^1,2, 张超³, 刘玉菲^1,2

1 重庆大学光电技术及系统教育部重点实验室,重庆 400044
2 重庆大学光电工程学院智能感知技术中心(CIST),重庆 400044
3 北京卫星环境工程研究所,北京 100094

Acrylic Acid/Acrylamide/Carbon Nanotubes Based Hydrogel and the Sensing Performance

LYU Ying¹, HU Yongqin^1,2, HOU Chen^1,2, ZHANG Chao³, LIU Yufei^1,2

1 Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
2 Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
3 Beijing Satellite Environmental Engineering Research Institute, Beijing 100094

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摘要以甘油/水二元溶剂为分散介质、丙烯酸/丙烯酰胺为单体、过硫酸铵为引发剂、N,N′-亚甲基双丙烯酰胺为交联剂,采用红外照射自由基聚合的方法,本工作成功合成了聚丙烯酸/丙烯酰胺/碳纳米管(AA/AM/CNTs)掺杂复合凝胶,并使用电子万能试验机和数字源表等对其进行表征以及性能测试。结果表明,甘油的引入使得凝胶具有高保湿性能,且可以在-20~ 60 ℃的温度范围内稳定存放7 d以上。CNTs的引入使得凝胶的抗压缩能力得到显著提高。此外,该凝胶在压力传感方面显示出良好的稳定性和可重复性,其压力传感器的电流变化可反映人体的运动形态,可利用该传感器监测人体活动(如膝盖弯曲、手肘运动、手腕弯曲以及手指运动)。监测结果表明,该CNTs掺杂凝胶在诊断关节类疾病方面具有潜在的应用价值。

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关键词: 复合水凝胶保湿凝胶碳纳米管压力传感器人体活动监测

Abstract: With binary glycerol/water as dispersion medium, acrylic acid/acrylamide as monomer, ammonium persulfate as initiator, and N,N′-methylenebisacrylamide as crosslinking agent, poly (acrylic acid/acrylamide/carbon nanotubes (AA/AM/CNTs) doped hydrogel were successfully fabricated with using the infrared irradiation radical polymerization method, and then studied by using the universal testing machine and electronic source-meter for characterization and performance testing. The results have shown that the introduction of glycerol makes the gel have great moisture properties, which can be maintained at -20—60 ℃ for more than 7 d. The anti-compression ability of the hydrogel has been improved via adding CNTs. In addition, the gel pressure sensors, showing good stability and repeatability, can be applied to human activities monitoring, such as knee bends, elbow movement, wrist and finger movement, the current changes of the gel pressure sensors reflect the human body movement. It is indicated that the CNTs doping hydrogel has a great application potential of joint disease diagnosis.

Key words: composite hydrogel hydrating gel carbon nanotube pressure sensor human activity monitoring

出版日期: 2022-06-25 发布日期: 2022-06-24

ZTFLH:

TB33

基金资助: 中央高校基本科研业务费专项资金(2020CDJGFCG006);国家重点研发计划项目(2016YFE0125200);国家自然科学基金(61927818)

通讯作者: Yufei.Liu@cqu.edu.cn

作者简介: 吕颖,重庆大学硕士研究生。2018年6月于哈尔滨理工大学获得测控技术与仪器专业工学学士学位。现主要从事水凝胶类智能材料与智能传感器的研究工作。
刘玉菲,重庆大学光电工程学院教授,分别于2003年、2006年和2011年获得北京大学、中国科学院和赫瑞-瓦特大学(Heriot-Watt University)的物理学理学学士学位、微电子与固体电子学硕士学位及电子科学与技术博士学位,其研究重点聚焦于MEMS技术、先进传感技术及便携式诊断技术等,发表学术论文50余篇,申请发明专利20余项。

引用本文:

吕颖, 胡永琴, 厚琛, 张超, 刘玉菲. 丙烯酸/丙烯酰胺/碳纳米管复合水凝胶及其传感性能研究[J]. 材料导报, 2022, 36(12): 21030154-7.
LYU Ying, HU Yongqin, HOU Chen, ZHANG Chao, LIU Yufei. Acrylic Acid/Acrylamide/Carbon Nanotubes Based Hydrogel and the Sensing Performance. Materials Reports, 2022, 36(12): 21030154-7.

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http://www.mater-rep.com/CN/10.11896/cldb.21030154 或 http://www.mater-rep.com/CN/Y2022/V36/I12/21030154

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