Electrically conductive, tough hydrogels with pH sensitivity

Naficy, Sina, Razal, Joselito M, Spinks, Geoffrey M, Wallace, Gordon G and Whitten, Philip G 2012, Electrically conductive, tough hydrogels with pH sensitivity, Chemistry of Materials, vol. 24, no. 17, pp. 3425-3433, doi: 10.1021/cm301666w.

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Title Electrically conductive, tough hydrogels with pH sensitivity
Author(s) Naficy, Sina
Razal, Joselito MORCID iD for Razal, Joselito M orcid.org/0000-0002-9758-3702
Spinks, Geoffrey M
Wallace, Gordon G
Whitten, Philip G
Journal name Chemistry of Materials
Volume number 24
Issue number 17
Start page 3425
End page 3433
Total pages 9
Publisher American Chemical Society
Place of publication Washington, DC
Publication date 2012
ISSN 0897-4756
Keyword(s) Conductive hydrogels
Mechanical properties
pH sensitivity
Poly(acrylic acid)
Poly(ethylene glycol) methyl ether methacrylate
Summary 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.
Language eng
DOI 10.1021/cm301666w
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30061328

Document type: Journal Article
Collection: Faculty of Science, Engineering and Built Environment
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