Selective Interaction in a Polymer−Single-Wall Carbon Nanotube Composite

Panhuis, Mih; Maiti, Amitesh; Dalton, Alan B.; Noort, Albert van den; Coleman, Jonathan N.; McCarthy, Brendan; Blau, Werner J.

doi:10.1021/jp026470s

Cited by 135 publications

(72 citation statements)

References 30 publications

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“…The high energy imparted through the use of an ultrasonic horn enables large bundles of nanotubes to be physically separated, with the resultant individual tubes stabilised through non-covalent interactions with dispersant molecules [5,6]. Filtration of these dispersions onto a support membrane, using either vacuum or positive pressure, then results in formation of the buckypaper [7], which consists of a tangled bed of nanotubes with a range of pore sizes that are larger than those present in aligned CNT membranes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, properties, water and solute permeability of MWNT buckypapers

Rashid

Pham

Sweetman

et al. 2014

Journal of Membrane Science

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High power tip sonication was used to prepare dispersions containing multi-walled carbon nanotubes (MWNTs), or multi-walled carbon nanotubes functionalised with carboxylic acid groups (MWNT-COOH) or amine groups (MWNT-NH2). The dispersion of carbon nanotubes was facilitated by the presence of a surfactant (Triton X-100) or various macrocyclic ligands (derivatised porphyrin, phthalocyanine or calixarene) in the solution. Vacuum filtration of the dispersions afforded self-supporting membranes known as buckypapers. Microanalysis provided evidence for retention of the surfactant or macrocyclic ligands in the buckypapers, which were also characterised by measurement of their electrical conductivities (24±16 to 58±11 S/cm), contact angles (28±1° to 55±10°) and mechanical properties (tensile strengths varied between 1.6±0.7 and 13±2 MPa). The surface and internal morphologies of the buckypapers were similar to each other, which correlates with the lack of variation observed in their permeability's towards water. The ability of selected buckypapers to remove trace organic contaminants (TrOCs) was also examined. A buckypaper prepared using Triton X-100 as the dispersant showed more than 80% removal efficiency for 11 out of the 12 TrOCs investigated in this study. On the other hand, a buckypaper prepared from MWNTs and phthalocyaninetetrasulfonic acid exhibited lower removal efficiencies for these TrOCs, possibly due to their smaller specific surface area. KeywordsCarbon nanotubes, buckypapers, water permeability, trace organic contaminants, bisphenol A, GeoQuest S/cm), contact angles (28 ± 1 to 55 ± 10 ) and mechanical properties (tensile strengths varied between 1.6 ± 0.7 and 13 ± 2 MPa). The surface and internal morphologies of the buckypapers were similar to each other, which correlates with the lack of variation observed in their permeability's towards water. The ability of selected buckypapers to remove trace organic contaminants (TrOCs) was also examined. A buckypaper prepared using Triton X-100 as the dispersant showed more than 80% removal efficiency for 11 out of the 12 TrOCs investigated in this study. On the other hand, a buckypaper prepared from MWNTs and phthalocyaninetetrasulfonic acid exhibited lower removal efficiencies for these TrOCs, possibly due to their smaller specific surface area.

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Section: Introductionmentioning

confidence: 99%

Synthesis, properties, water and solute permeability of MWNT buckypapers

Rashid

Pham

Sweetman

et al. 2014

Journal of Membrane Science

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“…This is not only mathematically interesting, but might also have technological consequences for the design of particularly stable polymer coated carbon nanotubes or other nanohybrid structures including SWCNTs and complex molecules [3,5,[37][38][39][40][41][42].…”

Section: Mapping Between Carbon Nanotubes and Polymer Tubesmentioning

confidence: 99%

Morphological Similarities between Single-Walled Nanotubes and Tubelike Structures of Polymers with Strong Adsorption Affinity to Nanowires

Vogel

Mutat

Adler

et al. 2013

Commun. comput. phys.

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Abstract. In their tubelike phase, nanowire-adsorbed polymers exhibit strong structural similarities to morphologies known from single-walled carbon (hexagonal) and boron (triangular) nanotubes. Since boron/boron nitride tubes require some disorder for stability the triangular polymer tubes provide a closer analog to the carbon tubes. By means of computer simulations of both two and three dimensional versions of a coarse-grained bead-spring model for the polymers, we investigate their structural properties and make a detailed comparison with structures of carbon nanotubes.

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“…One could obtain some useful information on this binding through classical molecular mechanics (MM) simulations on small segments of individual CNTs, as we have done using the COMPASS force field [27] on structures like Fig. 8(b), where chiral (12, 7) and (13, 6) CNTs were studied as specific examples [95].…”

Section: Cnt-polymer Compositesmentioning

confidence: 99%