TY - JOUR
T1 - Drastic modification of the piezoresistive behavior of polymer nanocomposites by using conductive polymer coatings
AU - Ventura, Isaac Aguilar
AU - Zhou, Jian
AU - Lubineau, Gilles
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2015/7/21
Y1 - 2015/7/21
N2 - We obtained highly conductive nanocomposites by adding conductive polymer poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (PEDOT/PSS)-coated carbon nanotubes (CNTs) to pristine insulating Polycarbonate. Because the PEDOT/PSS ensures efficient charge transfer both along and between the CNTs, we could attribute the improvement in electrical conductivity to coating. In addition to improving the electrical conductivity, the coating also modified the piezoresistive behavior of the nanocomposites compared to the material with pristine uncoated CNTs: whereas CNT/Polycarbonate samples exhibited a very strong piezoresistive effect, PEDOT/PSS-coated MWCNT/Polycarbonate samples exhibited very little piezoresistivity. We studied this change in piezoresistive behavior in detail by investigating various configurations of filler content. We investigated how this observation could be explained by changes in the microstructure and in the conduction mechanism in the interfacial regions between the nanofillers. Our study suggests that tailoring the piezoresistive response to specific application requirements is possible.
AB - We obtained highly conductive nanocomposites by adding conductive polymer poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (PEDOT/PSS)-coated carbon nanotubes (CNTs) to pristine insulating Polycarbonate. Because the PEDOT/PSS ensures efficient charge transfer both along and between the CNTs, we could attribute the improvement in electrical conductivity to coating. In addition to improving the electrical conductivity, the coating also modified the piezoresistive behavior of the nanocomposites compared to the material with pristine uncoated CNTs: whereas CNT/Polycarbonate samples exhibited a very strong piezoresistive effect, PEDOT/PSS-coated MWCNT/Polycarbonate samples exhibited very little piezoresistivity. We studied this change in piezoresistive behavior in detail by investigating various configurations of filler content. We investigated how this observation could be explained by changes in the microstructure and in the conduction mechanism in the interfacial regions between the nanofillers. Our study suggests that tailoring the piezoresistive response to specific application requirements is possible.
UR - http://hdl.handle.net/10754/561084
UR - http://linkinghub.elsevier.com/retrieve/pii/S0266353815300373
UR - http://www.scopus.com/inward/record.url?scp=84938068780&partnerID=8YFLogxK
U2 - 10.1016/j.compscitech.2015.07.007
DO - 10.1016/j.compscitech.2015.07.007
M3 - Article
SN - 0266-3538
VL - 117
SP - 342
EP - 350
JO - Composites Science and Technology
JF - Composites Science and Technology
ER -