Simple and cost-effective method of highly conductive and elastic carbon nanotube/polydimethylsiloxane composite for wearable electronics.
Simple and cost-effective method of highly conductive and elastic carbon nanotube/polydimethylsiloxane composite for wearable electronics.
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简单且成本效益的高电导和弹性碳纳米管/聚二甲基硅氧烷复合材料的方法。
DOI：
10.1038/s41598-017-18209-w
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发表时间：
2018-01-22
影响因子：
4.6
通讯作者：
Lee SH
中科院分区：
文献类型：
--
作者：
Kim JH;Hwang JY;Hwang HR;Kim HS;Lee JH;Seo JW;Shin US;Lee SH
各种柔性和可拉伸材料的发展在生物医学工程和电子工业中具有广阔的应用前景。这种对可穿戴电子产品、可拉伸电路和柔性显示器的兴趣创造了对稳定、易于制造和廉价材料的需求。然而，柔性和弹性电子器件的构造仍然具有挑战性，商业电子部件可以通过简单且具有成本效益的处理安装在柔性和弹性电子器件上。我们开发了一种碳纳米管（CNTs）和聚二甲基硅氧烷（PDMS）弹性体的纳米复合材料。为了实现聚合物内的碳纳米管的均匀分布，开发了一种优化的分散过程，使用异丙醇（IPA）和甲基封端的PDMS结合超声处理。蒸发IPA后，根据模具的不同，可以很容易地用纳米复合材料形成各种形状和尺寸。该材料提供高柔性、弹性和导电性，而不需要夹层结构。细胞毒性试验和循环应变试验（超过10，000次）证明，它也具有生物相容性和机械稳定性。我们通过应变传感器，柔性电路和生物电位测量（如EEG，ECG和EMG）展示了医疗保健领域的潜力。这种简单、成本低廉的CNT/PDMS复合材料制备方法为可穿戴电子产品的各种应用提供了一种有前途的工艺和材料。
The development of various flexible and stretchable materials has attracted interest for promising applications in biomedical engineering and electronics industries. This interest in wearable electronics, stretchable circuits, and flexible displays has created a demand for stable, easily manufactured, and cheap materials. However, the construction of flexible and elastic electronics, on which commercial electronic components can be mounted through simple and cost-effective processing, remains challenging. We have developed a nanocomposite of carbon nanotubes (CNTs) and polydimethylsiloxane (PDMS) elastomer. To achieve uniform distributions of CNTs within the polymer, an optimized dispersion process was developed using isopropyl alcohol (IPA) and methyl-terminated PDMS in combination with ultrasonication. After vaporizing the IPA, various shapes and sizes can be easily created with the nanocomposite, depending on the mold. The material provides high flexibility, elasticity, and electrical conductivity without requiring a sandwich structure. It is also biocompatible and mechanically stable, as demonstrated by cytotoxicity assays and cyclic strain tests (over 10,000 times). We demonstrate the potential for the healthcare field through strain sensor, flexible electric circuits, and biopotential measurements such as EEG, ECG, and EMG. This simple and cost-effective fabrication method for CNT/PDMS composites provides a promising process and material for various applications of wearable electronics.
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