TY - JOUR
T1 - Ambient-temperature waterborne polymer/rGO nanocomposite films
T2 - effect of rGO distribution on electrical conductivity
AU - Fadil, Yasemin
AU - Dinh, Le N. M.
AU - Yap, Monique O. Y.
AU - Kuchel, Rhiannon P.
AU - Yao, Yin
AU - Omura, Taro
AU - Aregueta-Robles, Ulises A.
AU - Song, Ning
AU - Huang, Shujuan
AU - Jasinski, Florent
AU - Thickett, Thickett
AU - Minami, Hideto
AU - Agarwal, Vipul
AU - Zetterlund, Per B.
PY - 2019/12/25
Y1 - 2019/12/25
N2 - Electrically conductive polymer/rGO (reduced graphene oxide) films based on styrene and n-butyl acrylate are prepared by a variety of aqueous latex based routes involving ambient temperature film formation. Techniques based on miniemulsion polymerization using GO as surfactant and "physical mixing" approaches (i.e., mixing an aqueous polymer latex with an aqueous GO dispersion) are employed, followed by heat treatment of the films to convert GO to rGO. The distribution of GO sheets and the electrical conductivity depend strongly on the preparation method, with electrical conductivities in the range 9 × 10-4 to 3.4 × 102 S/m. Higher electrical conductivities are obtained using physical mixing compared to miniemulsion polymerization, which is attributed to the former providing a higher level of self-alignment of rGO into larger linear domains. The present results illustrate how the distribution of GO sheets within these hybrid materials can to some extent be controlled by judicious choice of preparation method, thereby providing an attractive means of nanoengineering for specific potential applications.[Graphic presents]
AB - Electrically conductive polymer/rGO (reduced graphene oxide) films based on styrene and n-butyl acrylate are prepared by a variety of aqueous latex based routes involving ambient temperature film formation. Techniques based on miniemulsion polymerization using GO as surfactant and "physical mixing" approaches (i.e., mixing an aqueous polymer latex with an aqueous GO dispersion) are employed, followed by heat treatment of the films to convert GO to rGO. The distribution of GO sheets and the electrical conductivity depend strongly on the preparation method, with electrical conductivities in the range 9 × 10-4 to 3.4 × 102 S/m. Higher electrical conductivities are obtained using physical mixing compared to miniemulsion polymerization, which is attributed to the former providing a higher level of self-alignment of rGO into larger linear domains. The present results illustrate how the distribution of GO sheets within these hybrid materials can to some extent be controlled by judicious choice of preparation method, thereby providing an attractive means of nanoengineering for specific potential applications.[Graphic presents]
KW - graphene
KW - graphene oxide
KW - nanocomposite
KW - emulsion
KW - radical polymerization
UR - http://www.scopus.com/inward/record.url?scp=85076522052&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/arc/DP190100831
UR - http://purl.org/au-research/grants/nhmrc/1139060
U2 - 10.1021/acsami.9b19183
DO - 10.1021/acsami.9b19183
M3 - Article
C2 - 31747744
AN - SCOPUS:85076522052
SN - 1944-8244
VL - 11
SP - 48450
EP - 48458
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 51
ER -