A novel method of fabricating carbon nanotubes-polydimethylsiloxane composite electrodes for electrocardiography
A novel method of fabricating carbon nanotubes-polydimethylsiloxane composite electrodes for electrocardiography
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DOI：
10.1080/09205063.2015.1082807
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发表时间：
2015-11-02
影响因子：
3.6
通讯作者：
Jin, Xun
中科院分区：
文献类型：
--
作者：
Liu, Benyan;Chen, Yingmin;Jin, Xun
聚合物基柔性电极由于其良好的穿着舒适性，在医学应用中受到广泛关注。目前这种电极的制造方法尚未得到广泛应用。本研究采用聚二甲基硅氧烷（PDMS）和导电添加剂碳纳米管（CNTs）制备复合心电图电极（ECG）。采用超声、搅拌和原位聚合的三步分散工艺制备了CNTs-PDMS的均匀混合物。采用复刻技术制备CNTs-PDMS复合电极。超声时间和碳纳米管浓度对聚合物电极性能的影响通过阻抗和心电测量来评估。超声时间为12h，碳纳米管含量为5wt%制备的电极信号幅值与商用Ag/AgCl电极相当。聚合物电极很容易用传统的制造技术制造，这表明了大规模生产降低成本的潜在优势。
Polymer-based flexible electrodes are receiving much attention in medical applications due to their good wearing comfort. The current fabrication methods of such electrodes are not widely applied. In this study, polydimethylsiloxane (PDMS) and conductive additives of carbon nanotubes (CNTs) were employed to fabricate composite electrodes for electrocardiography (ECG). A three-step dispersion process consisting of ultrasonication, stirring, and in situ polymerization was developed to yield homogenous CNTs-PDMS mixtures. The CNTs-PDMS mixtures were used to fabricate CNTs-PDMS composite electrodes by replica technology. The influence of ultrasonication time and CNT concentration on polymer electrode performance was evaluated by impedance and ECG measurements. The signal amplitude of the electrodes prepared using an ultrasonication time of 12h and CNT content of 5wt% was comparable to that of commercial Ag/AgCl electrodes. The polymer electrodes were easily fabricated by conventional manufacturing techniques, indicating a potential advantage of reduced cost for mass production.