scholarly journals A Facile Solution Engineering of PEDOT:PSS-Coated Conductive Textiles for Wearable Heater Applications

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 945
Author(s):  
In Su Jin ◽  
Jea Uk Lee ◽  
Jae Woong Jung
Keyword(s):  
Dimethyl Sulfoxide ◽  
Sheet Resistance ◽  
Joule Heating ◽  
Applied Voltage ◽  
Solution Treatment ◽  
Simple Solution ◽  
Maximum Temperature ◽  
Electronic Textiles ◽  
Styrene Sulfonate ◽  
Poly Styrene Sulfonate

To enable highly conductive electronic textiles (E-textiles), we herein demonstrate a simple solution treatment of poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT:PSS)-coated textiles by dimethyl sulfoxide (DMSO) and methanol. The subsequent solution engineering of DMSO and methanol not only enhances crystallization of PEDOT chains but also the contact for PEDOT:PSS to the fibers. Additionally, the methanol dipping effectively removes the insulating PSS part from the conductive PEDOT chains, which contributes to subsequently reduced sheet resistance of less than 3 Ω/sq of the conductive textiles. Joule heating property of the highly conductive textiles achieves the maximum temperature with the temperature reaching 133 °C at a low applied voltage of 3 V within 20 s, which promises highly conductive E-textiles as multi-functional wearable heater applications.

Correlation between near infrared-visible absorption, intrinsic local and global sheet resistance of poly(3,4-ethylenedioxy-thiophene) poly(styrene sulfonate) thin films

2012 ◽  
Vol 100 (15) ◽  
pp. 153301 ◽  
Author(s):  
Felix Herrmann ◽  
Sebastian Engmann ◽  
Martin Presselt ◽  
Harald Hoppe ◽  
Sviatoslav Shokhovets ◽  
...  
Keyword(s):  
Thin Films ◽  
Sheet Resistance ◽  
Near Infrared ◽  
Visible Absorption ◽  
Styrene Sulfonate ◽  
Poly Styrene Sulfonate

Highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/nylon 6 nanofiber web treated with repetitive coating cycles and dimethyl sulfoxide multi-step treatment for electronic textiles

2021 ◽  
pp. 004051752199981
Author(s):  
Sungeun Shin ◽  
Eugene Lee ◽  
Gilsoo Cho
Keyword(s):  
Electrical Conductivity ◽  
Dimethyl Sulfoxide ◽  
Sheet Resistance ◽  
Contact Area ◽  
Nylon 6 ◽  
Electronic Textiles ◽  
Chemical Structures ◽  
One Step ◽  
Nanofiber Web ◽  
The One

Highly conductive nylon 6 nanofiber web was fabricated with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and dimethyl sulfoxide (DMSO) for electronic textiles. To improve electrical conductivity, repeated coating with PEDOT:PSS and multi-step treatment of DMSO was performed. The effects of these treatments on electrical conductivity, surface properties, and chemical structures were investigated. For repetitive coating cycles, pristine PEDOT:PSS dispersion was dropped onto a nylon 6 nanofiber web for between one and four times of coating. For DMSO multi-step treatment, in the one-step treatment, the nanofiber web was repeatedly treated using PEDOT:PSS doped with DMSO. In the two-step treatment, the nanofiber web was repeatedly treated with doped PEDOT:PSS at first and, then, it was immersed in a DMSO bath. As a result, the sheet resistance decreased dramatically as the number of coating cycles increased. When the two-step treatment was applied, the sheet resistance was much lower compared to that of the one-step treatment, and thereby sample PD4-D with the lowest resistance showed 6.56 Ω/sq. As a result, the surface of the nanofiber web was covered with more PEDOT:PSS as the coating cycle was repeated. The PEDOT particles became large and long shapes after the two-step treatment of DMSO. This inferred that the contact area among conducting PEDOT particles increased because insulating PSS was removed by DMSO. In addition, the presence of PEDOT:PSS and nylon 6 was confirmed. This study proved that the simultaneous treatments of repeated coating with PEDOT:PSS and multi-step treatment of DMSO can improve electrical conductivity, and it developed the highly conductive PEDOT:PSS/nylon 6 nanofiber web.

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