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Electrically conductive, tough hydrogels with pH sensitivity

Journal Article


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Abstract


  • Electrically conductive, mechanically tough hydrogels based on a double network (DN) comprised of poly(ethylene glycol) methyl ether methacrylate (PPEGMA) and poly(acrylic acid) (PAA) were produced. Poly(3,4-ethylenedioxythiophene) (PEDOT) was chemically polymerized within the tough DN gel to provide electronic conductivity. The effects of pH on the tensile and compressive mechanical properties of the fully swollen hydrogels, along with their electrical conductivity and swelling ratio were determined. Compressive and tensile strengths as high as 11.6 and 0.6 MPa, respectively, were obtained for hydrogels containing PEDOT with a maximum conductivity of 4.3 S cm–1. This conductivity is the highest yet reported for hydrogel materials of high swelling ratios. These hydrogels may be useful as soft strain sensors because their electrical resistance changed significantly when cyclically loaded in compression.

UOW Authors


  •   Naficy, Sina (external author)
  •   Razal, Joselito M. (external author)
  •   Spinks, Geoff M.
  •   Wallace, Gordon
  •   Whitten, Philip G. (external author)

Publication Date


  • 2012

Citation


  • Naficy, S., Razal, J. M., Spinks, G. M., Wallace, G. G. & Whitten, P. G. (2012). Electrically conductive, tough hydrogels with pH sensitivity. Chemistry of Materials, 24 (17), 3425-3433.

Scopus Eid


  • 2-s2.0-84866140269

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1533&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/533

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 3425

End Page


  • 3433

Volume


  • 24

Issue


  • 17

Place Of Publication


  • United States

Abstract


  • Electrically conductive, mechanically tough hydrogels based on a double network (DN) comprised of poly(ethylene glycol) methyl ether methacrylate (PPEGMA) and poly(acrylic acid) (PAA) were produced. Poly(3,4-ethylenedioxythiophene) (PEDOT) was chemically polymerized within the tough DN gel to provide electronic conductivity. The effects of pH on the tensile and compressive mechanical properties of the fully swollen hydrogels, along with their electrical conductivity and swelling ratio were determined. Compressive and tensile strengths as high as 11.6 and 0.6 MPa, respectively, were obtained for hydrogels containing PEDOT with a maximum conductivity of 4.3 S cm–1. This conductivity is the highest yet reported for hydrogel materials of high swelling ratios. These hydrogels may be useful as soft strain sensors because their electrical resistance changed significantly when cyclically loaded in compression.

UOW Authors


  •   Naficy, Sina (external author)
  •   Razal, Joselito M. (external author)
  •   Spinks, Geoff M.
  •   Wallace, Gordon
  •   Whitten, Philip G. (external author)

Publication Date


  • 2012

Citation


  • Naficy, S., Razal, J. M., Spinks, G. M., Wallace, G. G. & Whitten, P. G. (2012). Electrically conductive, tough hydrogels with pH sensitivity. Chemistry of Materials, 24 (17), 3425-3433.

Scopus Eid


  • 2-s2.0-84866140269

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1533&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/533

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 3425

End Page


  • 3433

Volume


  • 24

Issue


  • 17

Place Of Publication


  • United States