聚天冬氨酸/聚(丙烯酰胺-丙烯酸)/Fe^(3+)离子水凝胶应变传感器的制备及在人体运动监测中的应用  

Preparation of Polyaspartic Acid/Poly(acrylamide-acrylic acid)/Fe^(3+)Ionic Hydrogel Strain Sensor and Its Application in Human Motion Monitoring

作　　者：崔聪聪 李汉红 毛林韩 陈朝霞[1] 张玉红[1] Congcong Cui;Hanhong Li;Linhan Mao;Zhaoxia Chen;Yuhong Zhang(Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry,Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules,College of Chemistry and Chemical Engineering,Hubei University,Wuhan 430062,China)

机构地区：[1]有机化工新材料省部共建协同创新中心湖北省功能化学品工程技术研究中心湖北大学化学化工学院,湖北武汉430062

出　　处：《高分子材料科学与工程》2023年第3期127-133,共7页Polymer Materials Science & Engineering

基　　金：湖北省功能化学品工程技术研究中心项目。

摘　　要：将聚天冬氨酸(PASP)引入聚(丙烯酰胺-丙烯酸)(P(AA-AM))中,制备了PASP/P(AA-AM)水凝胶基质,将该基质浸泡于FeCl_(3)·6H_(2)O水溶液,得到了高强度、超拉伸,灵敏度较好的新型双离子交联PASP/P(AA-AM)/FeCl_(3)(PAAF)水凝胶。Fe^(3+)的引入不仅提高了PAAF水凝胶力学性能,同时也赋予了优秀的传感性能。所得的水凝胶传感器表现出优异的拉伸性能(1125%)、良好的力学强度(802.97 kPa),出色的快速自恢复性能(几乎完全恢复),良好的抗疲劳性和较好的灵敏度(GF=3.04),可以监测不同的人体运动(例如手指、肘部和膝关节),在小应变和大应变下都具有较好的稳定性,有望应用于可穿戴柔性传感器领域,监测人体运动。Polyaspartic acid/poly(acrylamide-acrylic acid)(PASP/P(AA-AM))hydrogel matrix was prepared by introducing PASP into the poly(acrylamide-acrylic acid).A new type of double ion cross-linked PASP/P(AA-AM)/FeCl_(3)(PAAF)hydrogel with a high strength,super stretch,and better sensitivity was obtained through immersing the above matrix in FeCl_(3)·6H_(2)O aqueous solution.The introduction of Fe^(3+)can not only improve the mechanical properties of PAAF hydrogel,but also endow excellent sensing properties.The obtained hydrogel sensor shows excellent tensile properties(1125%),good mechanical strength(802.97 kPa),excellent fast self-healing performance(almost complete recovery),good fatigue resistance,and good sensitivity(GF=3.04),which could detect the different human movements(such as fingers,elbows,and knee joints)with good stability under both small and large strains.The obtained PAAF hydrogel can be used as wearable flexible sensor to monitor human movements.

关 键 词：水凝胶 传感器 聚天冬氨酸 人体运动监测 拉伸性 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]