Conductivity and Mechanical Properties of PEDOT Composite Fibers

2 Conductivity and Mechanical Properties of PEDOT Composite Fibers 

Composite conductive fibers based on poly(3,4-ethylene-diox)d hiophene]-polystyrene sulfonic acid (PEDOT-PSS) solution blended with polyacrylonitrile (PAN] were obtained via wet spinning. The influence of draw ratio on the morphology, structure, thermal degradation, electrical conductivity, and mechanical properties of the resulting fibers was investigated. The results revealed that the PEDOT-PSS/PAN composite conductive fibers crystallization, electrical conductivity and mechanical properties were improved with the increase of draw ratio. The thermal stability of the fibers was almost independent of draw ratio, and only decreased slightty with draw ratio. Besides, when the draw ratio was 6, the conductivity of the PEDOT-PSS/PAN fibers was 5.0 S cm, ten times the conductivity when the draw ratio was 2 (Fig 5.10].  

Poly(3,4-ethylenediox5d hiophene3 (PEDOT) nanoiiber mats by electrospinning combined with in situ interfacial pol3mierization (Fig 5.11], The PEDOT nanofiber mats displayed good mechanical properties (tensile strength 8.7 0.4 MPa Young s modulus 28.4  

3 MPa] and flexibility, which can almost be restored to its original shape even after serious twisting and crimping. Especially, from the results of the cellular morphology and proliferation of human cancer stem cells (hCSCs) cultured on the PEDOT nanofiber mats for 3 days, evidence was provided that the PEDOT nanofiber mats have similar biocompatibility to tissue culture plates (TCPs) combined with a high electrical conductivity of 7.8 0.4 S cm .  

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