High strain electromechanical actuators based on electrodeposited polypyrrole doped with di-(2-ethylhexyl)sulfosuccinate

Journal Article


Abstract


  • The low-voltageelectromechanicalactuationofpolypyrrole(PPy)dopedwithdi-(2-ethylhexyl)

    sulfosuccinate (DEHS)hasbeeninvestigated.ThePPy-DEHShasbeenpreparedbothchemically(cast

    as filmsfromsolution)andbymoreconventionalelectrochemicalpolymerization.Verylargestrainsof

    ∼30% wereobtainedduringslow-scanredoxcyclingoftheelectrochemicallypreparedPPy-DEHSfilms.

    In constrast,PPy-DEHSfilmscastfromsolutionsofthechemicallypolymerizedpolymergaveactuation

    strains of ∼2.5%. Thepolymerizationmethodwasalsofoundtohaveasignificanteffectonthestructure,

    conductivity andmechanicalpropertiesofthePPy-DEHSmaterials.Theconductivityoftheelectrochem-

    ically polymerizedPPy-DEHSwas75Scm−1, considerablyhigherthanthatfoundforthechemically

    derived polymer(7Scm−1). ThestructureofthePPy-DEHSwasfurtherelucidatedfromUV–vis,Raman

    and FT-IRspectralstudieswhichindicatedthattheconjugationlengthofthePPycouldbeincreased

    significantly byvaryingthepolymerizationmethod.FilmsobtainedbycastingchemicallypreparedPPy-

    DEHS showedhighermodulus(2.3GPa)thanelectropolymerizedPPy-DEHS(0.6GPa),butweremore

    brittle. Bothmaterialswereelectroactiveinacetonitrile/waterelectrolyte.Thehigheractuationstrain

    observed intheelectrochemicallypreparedfilmswasattributedtoamoreopenmolecularstructure(as

    indicated bythelowermodulus)allowingforeasieriondiffusionandahigherconductivityallowing

    easier chargetransfer.

Publication Date


  • 2011

Citation


  • Foroughi, J., Spinks, G. M. & Wallace, G. G. (2011). High strain electromechanical actuators based on electrodeposited polypyrrole doped with di-(2-ethylhexyl)sulfosuccinate. Sensors and Actuators B: Chemical: international journal devoted to research and development of physical and chemical transducers, 155 (1), 278-284.

Scopus Eid


  • 2-s2.0-79956364377

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/450

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 278

End Page


  • 284

Volume


  • 155

Issue


  • 1

Abstract


  • The low-voltageelectromechanicalactuationofpolypyrrole(PPy)dopedwithdi-(2-ethylhexyl)

    sulfosuccinate (DEHS)hasbeeninvestigated.ThePPy-DEHShasbeenpreparedbothchemically(cast

    as filmsfromsolution)andbymoreconventionalelectrochemicalpolymerization.Verylargestrainsof

    ∼30% wereobtainedduringslow-scanredoxcyclingoftheelectrochemicallypreparedPPy-DEHSfilms.

    In constrast,PPy-DEHSfilmscastfromsolutionsofthechemicallypolymerizedpolymergaveactuation

    strains of ∼2.5%. Thepolymerizationmethodwasalsofoundtohaveasignificanteffectonthestructure,

    conductivity andmechanicalpropertiesofthePPy-DEHSmaterials.Theconductivityoftheelectrochem-

    ically polymerizedPPy-DEHSwas75Scm−1, considerablyhigherthanthatfoundforthechemically

    derived polymer(7Scm−1). ThestructureofthePPy-DEHSwasfurtherelucidatedfromUV–vis,Raman

    and FT-IRspectralstudieswhichindicatedthattheconjugationlengthofthePPycouldbeincreased

    significantly byvaryingthepolymerizationmethod.FilmsobtainedbycastingchemicallypreparedPPy-

    DEHS showedhighermodulus(2.3GPa)thanelectropolymerizedPPy-DEHS(0.6GPa),butweremore

    brittle. Bothmaterialswereelectroactiveinacetonitrile/waterelectrolyte.Thehigheractuationstrain

    observed intheelectrochemicallypreparedfilmswasattributedtoamoreopenmolecularstructure(as

    indicated bythelowermodulus)allowingforeasieriondiffusionandahigherconductivityallowing

    easier chargetransfer.

Publication Date


  • 2011

Citation


  • Foroughi, J., Spinks, G. M. & Wallace, G. G. (2011). High strain electromechanical actuators based on electrodeposited polypyrrole doped with di-(2-ethylhexyl)sulfosuccinate. Sensors and Actuators B: Chemical: international journal devoted to research and development of physical and chemical transducers, 155 (1), 278-284.

Scopus Eid


  • 2-s2.0-79956364377

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/450

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 278

End Page


  • 284

Volume


  • 155

Issue


  • 1