纤维素基可穿戴压力传感材料的制备与应用  

Preparation and Application of Cellulosic-Based Wearable Pressure Sensing Materials

作　　者：吴玉涛[1] 高浩博 李昌俊 黄浩存 张伟[2] 李国栋[1,2,3] 赵汝和 孙姣姣[1,4] WU Yu-tao;GAO Hao-bo;LI Chang-jun;HUANG Hao-cun;ZHANG Wei;LI Guo-dong;ZHAO Ru-he;SUN Jiao-jiao(State Key Laboratory of Biobased Material and Green Papermaking/Key Lab of Pulp&Paper Science and Technology of Education Ministry of China,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China;Shandong Sun Paper Industry Joint Stock Co.Ltd.,Yanzhou 272100,China;National Demonstration Center for Experimental Light Chemistry Engineering Education(Shaanxi University of Science&Technology),Xian 710021,China;Tri-Y Environmental Research Institute,Vancouver V5M 4P7,Canada)

机构地区：[1]齐鲁工业大学(山东省科学院)生物基材料与绿色造纸国家重点实验室/制浆造纸科学与技术教育部重点实验室,济南250353 [2]山东太阳纸业股份有限公司,兖州272100 [3]轻化工程国家级实验教学示范中心(陕西科技大学),西安710021 [4]加拿大查韦环境研究院,温哥华V5M4P7

出　　处：《齐鲁工业大学学报》2020年第5期8-15,共8页Journal of Qilu University of Technology

基　　金：国家自然科学基金(21406112);国家级大学生创新创业训练计划项目(201910431027);轻化工程国家级实验教学示范中心(陕西科技大学)开放课题(2018QGSJ02-02);齐鲁工业大学校级大学生创新创业项目(xj201910431108,xj201910431109)。

摘　　要：随着科技水平的提高,具有良好力学响应性能的柔性传感器被广泛应用于健康监测、电子皮肤和虚拟现实等领域。本文以微纤化纤维素为主要原料,先通过物理吸附和化学键合的协同作用将二维纳米导电颗粒(多壁碳纳米管)负载在微纤化纤维素纤维表面;再利用冷冻干燥技术制备了具有多孔结构的纤维素基复合压力传感材料,并验证了其应用于压电传感领域的可行性。结果表明,当微纤化纤维素用量为2%,交联剂(N,N-二甲基甲酰胺)用量为1.5%,多壁碳纳米管用量为0.05%时,制备的传感材料的密度约为0.06 g/cm^3;当该复合材料的应变为10%时,产生的应力约为10 kPa;当压缩次数达到500次时,材料的回复率仍高达90%以上;经线性回归得到材料的灵敏度为3.33 kPa^(-1);人体穿戴测试结果表明,该新型微纤化纤维素复合压力传感材料的灵敏度较高、适应性较强。With the development of science and technology,flexible sensors with good mechanical response performance are widely used in the fields such as health monitoring,electronic skin,virtual reality and so on.In this study,microfibrillated cellulose(MFC)was used as a raw material,two-dimensional nano-conductive particles(multi-walled carbon nanotubes,MWCNT)were loaded on to the cellulose surfaces through a synergistic action of physical adsorption and chemical bonding.The cellulosic-based composite pressure sensing material was then obtained by freeze-drying technology.The results showed that,when the amount of microfibrillated cellulose was 2%,the cross-linking agent(N,N-dimethylformamide,DMF)was 1.5%,and carbon nanotubes were 0.05%,the density of the prepared sensing material was about 0.06 g/cm 3;and the stress was about 10 kPa when the strain of the composite was 10%.The recovery rate was higher than 90%when the number of compression reached 500 times,and the sensitivity was 3.33 kPa-1.Human wear test showed the new microfibrillated cellulose composite pressure sensing material had high sensitivity and strong adaptability.

关 键 词：微纤化纤维素 纤维素基压力传感材料 压力传感器 人体可穿戴 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]