Keywords: PEDOT–PSS/, MWCNT coatings, PPy–DBS, PEDOT–CF3SO3, bilayer actuators, nanotechnology, conducting polymers, electrochemical deposition, multi–walled CNTS, MWCNTs, carbon nanotubes, poly(styrenesulphonate), poly(3,4–ethylenedioxythiophene), nanocomposites, flexibility, strain, triflouromethanesulphonate, poly(ethylene terephthalate), PET
PEDOT–PSS/MWCNT coatings on PET for conducting polymer actuators
The electrochemical deposition of a conducting polymer on a non–conductive polymer requires a conductive layer, which can be achieved by sputtering or vaporisation of precious metals such as gold or platinum. In this investigation we coated poly(styrenesulphonate) doped poly(3,4–ethylenedioxythiophene)/multi–walled carbon nanotubes (PEDOT–PSS/MWCNT), in a ratio of 2.4 : 1 on a poly(ethylene terephthalate) (PET) layer and investigated the electrochemical stability of the nanotechnology composite. The properties of the PEDOT–PSS/MWCNT in respect to flexibility and strain were studied, and it was shown that strains up to 10% did not lessen the conductive properties. The quality of the electrochemically deposited conducting polymer polypyrrole doped with dodecylbenzenesulphonate (PPy–DBS) and triflouromethanesulphonate doped PEDOT (PEDOT–CF3SO3) on the conductive PEDOT–PSS/MWCNT coatings were studied and compared with a PET–layer sputtered with Pt as the conductive layer. It was shown that the replacement of a sputtered metal electrode layer with a layer obtained by simple coating technology can be used to produce conducting polymer bilayer actuators with comparable actuation ability.