Machine-Washable Conductive Silk Yarns with a Composite Coating of Ag Nanowires and PEDOT:PSS
- Authors
- Hwang, Byungil; Lund, Anja; Tian, Yuan; Darabi, Sozan; Müller, Christian
- Issue Date
- Jun-2020
- Publisher
- NLM (Medline)
- Keywords
- Ag nanowire; conductive silk yarn; nanocomposite; PEDOT:PSS; washing machine proof
- Citation
- ACS applied materials & interfaces, v.12, no.24, pp 27537 - 27544
- Pages
- 8
- Journal Title
- ACS applied materials & interfaces
- Volume
- 12
- Number
- 24
- Start Page
- 27537
- End Page
- 27544
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/42720
- DOI
- 10.1021/acsami.0c04316
- ISSN
- 1944-8244
1944-8252
- Abstract
- Electrically conducting fibers and yarns are critical components of future wearable electronic textile (e-textile) devices such as sensors, antennae, information processors, and energy harvesters. To achieve reliable wearable devices, the development of robust yarns with a high conductivity and excellent washability is urgently needed. In the present study, highly conductive and machine-washable silk yarns were developed utilizing a Ag nanowire and PEDOT:PSS composite coating. Ag nanowires were coated on the silk yarn via a dip-coating process followed by coating with the conjugated polymer:polyelectrolyte complex PEDOT:PSS. The PEDOT:PSS covered the Ag nanowire layers while electrostatically binding to the silk, which significantly improved the robustness of the yarn as compared with the Ag nanowire-coated reference yarns. The fabricated conductive silk yarns had an excellent bulk conductivity of up to ∼320 S/cm, which is largely retained even after several cycles of machine washing. To demonstrate that these yarns can be incorporated into e-textiles, the conductive yarns were used to construct an all-textile out-of-plane thermoelectric device and a Joule heating element in a woven heating fabric.
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