Graduate School of Energy, Environment, Water, and Sustainability (EEWS), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
Nanoscale. 2017 Mar 9;9(10):3399-3407. doi: 10.1039/c6nr08168a.
We propose that a silver nanowire (AgNW)-embedded conducting film can be monolithically applied onto an arbitrary cloth with strong adhesion and environmental stability. We employ a vapor-phase method, initiated chemical vapor deposition (iCVD), for conformal coating of a scaffold polymer film on the cloth. AgNWs are applied on the surface of iCVD polymer films, and the embedding of AgNWs is completed within only 20 s on heating the polymer-coated cloth to 70 °C. Crosslinking the copolymer at 120 °C renders the AgNW-embedded conducting films on the cloth not only thermally and chemically stable, but also mechanically robust. Moreover, when a hydrophobic encapsulating polymer layer is added on the AgNW-embedded film via iCVD, it substantially improves the stability of the cloth against thermal oxidation under hot and humid conditions, showing applicability of the technology to wearable electronics. With these robust conducting films, we demonstrate the fabrication of a waterproof cloth-based heater and circuit for a seven-segment display, thus, confirming the wide applicability of the technology developed in this study.
我们提出，银纳米线（AgNW）嵌入的导电膜可以通过强附着力和环境稳定性整体应用于任意布料上。我们采用气相法，即引发化学气相沉积（iCVD），在布料上进行支架聚合物膜的共形涂层。AgNW 被施加在 iCVD 聚合物膜的表面上，并且仅在将聚合物涂覆的布料加热至 70°C 时加热 20 秒即可完成 AgNW 的嵌入。在 120°C 下交联共聚物，使 AgNW 嵌入的导电膜不仅在热和化学上稳定，而且机械坚固。此外，当通过 iCVD 将疏水性封装聚合物层添加到 AgNW 嵌入的膜上时，它可以大大提高布料在湿热条件下抵抗热氧化的稳定性，表明该技术适用于可穿戴电子设备。使用这些坚固的导电膜，我们展示了一种基于防水布的加热器和七段显示器的电路的制造，从而证实了本研究中开发的技术的广泛适用性。
