Date of Completion
PEDOT:PSS, Fabric, Resistive Heating, Joule Heating, Electrochromic, PET, Spandex, Nylon
Field of Study
Doctor of Philosophy
Conductive fabrics have the potential to transform the textile industry with technological innovations that include self-warming clothing, adaptive camouflage, and biomimetics. Further understanding of the construction and properties of conductive fabric may one day realize the full potential of these applications. Herein, a poly(ethylene terephthalate) (PET) synthetic leather substrate was treated with dimethyl sulfoxide (DMSO) doped poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and was found to exhibit low sheet resistance and high thermal stability. A study that measured the resistance versus the concentration of conductive material found that saturation was achieved after the addition of only 1 wt. % doped PEDOT:PSS. The treated PET reached sheet resistances as low as 2 Ω/sq. and was capable of resistive heating, and reached a maximum temperature of 150°C in less than two minutes when a 5 V potential was applied. Additionally, the fabric was soaked in water and resistively heated, self-drying in approximately 8 minutes. In another series of experiments, a stretchable electrochromic fabric device (EFD) was demonstrated by utilizing an oligomeric urethane/ionic liquid electrolyte system. This EFD was capable of 50% deformation while still retaining its ability to change color upon the application of a potential difference. The electrochromic material used was a soluble alkylsilane-containing precursor polymer that was spray-coated onto the conductive fabric substrates, and was oxidatively converted chemically with a solution of FeCl3. All of the work contained within were proof of concept experiments that may one day help realize the commercialization in such applications.
Kline, Whitney M., "Resistive Heating and Electrochromic Devices Using PET, Nylon, and Spandex Fabrics Treated With PEDOT:PSS" (2014). Doctoral Dissertations. 649.