Lowering the percolation threshold of single-walled carbon nanotubes using polystyrene/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) blends

被引:63
作者
Hermant, Marie Claire [1 ]
Klumperman, Bert [1 ]
Kyrylyuk, Andriy V. [2 ]
van der Schoot, Paul [2 ]
Koning, Cor E. [1 ]
机构
[1] Tech Univ Eindhoven, Dept Polymer Chem, NL-5600 MB Eindhoven, Netherlands
[2] Tech Univ Eindhoven, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands
关键词
AQUEOUS DISPERSIONS; POLYMER COMPOSITES; POLYANILINE; PHOTOLUMINESCENCE; CONDUCTIVITY; POLYSTYRENE; NETWORKS;
D O I
10.1039/b814976c
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Single-walled carbon nanotubes (SWCNTs) are introduced into a polymer matrix via a latex-based route resulting in a conductive composite. The percolation threshold for a polystyrene (PS)-based composite prepared with SWCNTs dispersed in water using a conventional surfactant like sodium dodecyl sulfate (SDS) is approximately 0.4 wt%. In this study, SDS is substituted by a conductive polymer latex, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) also known as PEDOT:PSS. This latex can effectively stabilize individual SWCNTs in water and composites prepared with these dispersions show a lower percolation threshold value of 0.2 wt%. The percolation of PEDOT:PSS in PS in a binary polymer blend without SWCNTs is also investigated, and found to occur at a remarkably low loading of 2.2 wt% of the conductive latex. The morphology of the final polymer-filled blend is further investigated and the findings provide an explanation as to why PEDOT:PSS lowers the percolation threshold of the SWCNTs, and in fact has such a low threshold itself without the presence of the nanotubes.
引用
收藏
页码:878 / 885
页数:8
相关论文
共 44 条
[1]   Determination of the concentration of single-walled carbon nanotubes in aqueous dispersions using UV-visible absorption spectroscopy [J].
Attal, S. ;
Thiruvengadathan, R. ;
Regev, O. .
ANALYTICAL CHEMISTRY, 2006, 78 (23) :8098-8104
[2]   Percolation and tunneling in composite materials [J].
Balberg, I ;
Azulay, D ;
Toker, D ;
Millo, O .
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2004, 18 (15) :2091-2121
[3]   PERCOLATION THRESHOLDS IN THE 3-DIMENSIONAL STICKS SYSTEM [J].
BALBERG, I ;
BINENBAUM, N ;
WAGNER, N .
PHYSICAL REVIEW LETTERS, 1984, 52 (17) :1465-1468
[4]   ELECTRICALLY CONDUCTIVE POLYANILINE COPOLYMER LATEX COMPOSITES [J].
BEADLE, P ;
ARMES, SP ;
GOTTESFELD, S ;
MOMBOURQUETTE, C ;
HOULTON, R ;
ANDREWS, WD ;
AGNEW, SF .
MACROMOLECULES, 1992, 25 (09) :2526-2530
[5]   Self-assembled three-dimensional conducting network of single-wall carbon nanotubes [J].
Blanchet, GB ;
Subramoney, S ;
Bailey, RK ;
Jaycox, GD ;
Nuckolls, C .
APPLIED PHYSICS LETTERS, 2004, 85 (05) :828-830
[6]   Polyaniline nanotube composites: A high-resolution printable conductor [J].
Blanchet, GB ;
Fincher, CR ;
Gao, F .
APPLIED PHYSICS LETTERS, 2003, 82 (08) :1290-1292
[7]   Polymer-nanotube composites for transparent, conducting thin films [J].
Carroll, DL ;
Czerw, R ;
Webster, S .
SYNTHETIC METALS, 2005, 155 (03) :694-697
[8]   Pore structure of raw and purified HiPco single-walled carbon nanotubes [J].
Cinke, M ;
Li, J ;
Chen, B ;
Cassell, A ;
Delzeit, L ;
Han, J ;
Meyyappan, M .
CHEMICAL PHYSICS LETTERS, 2002, 365 (1-2) :69-74
[9]   Percolation-dominated conductivity in a conjugated-polymer-carbon-nanotube composite [J].
Coleman, JN ;
Curran, S ;
Dalton, AB ;
Davey, AP ;
McCarthy, B ;
Blau, W ;
Barklie, RC .
PHYSICAL REVIEW B, 1998, 58 (12) :R7492-R7495
[10]   Characterization of multiwall carbon nanotubes and influence of surfactant in the nanocomposite processing [J].
Cui, S ;
Canet, R ;
Derre, A ;
Couzi, M ;
Delhaes, P .
CARBON, 2003, 41 (04) :797-809