Evolution and evaluation of the polymer/nanotube composite

Curran, Seamus A.; Davey, A.P.; Coleman, Jonathan N.; Dalton, Alan B.; McCarthy, Brendan; Maier, Stefan A.; Drury, Anna; Gray, David H.; Brennan, Martin J.; Ryder, K.; Chapelle, Marc Lamy de la; Journet, Catherine; Bernier, Partrick; Byrne, Hugh J.; Carroll, D. L.; Ajayan, Pulickel M.; Lefrant, S.; Blau, Werner J.

doi:10.1016/s0379-6779(98)00279-3

Cited by 91 publications

(44 citation statements)

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“…However, in the vast majority of studies only one of the most common detergents (sodium dodecyl sulfate, SDS) is used, and surprisingly little research has been reported on the optimization of the surfactants. Polymers such as polyvinylpyrrolidone (PVP), [9] selected poly(phenylene-vinylene)s, [10,11] and DNA, [12,13] have also been found to act as useful surfactants for dispersing nanotubes. Last year, Islam et al demonstrated that sodium dodecylbenzene sulfonate (DDBS) is significantly more effective than SDS in dispersing SWNTs, [14] and a transmission electron microscopy (TEM) study of the morphology of surfactants on carbon nanotubes has been reported.…”

Section: Introductionmentioning

confidence: 99%

Efficient Isolation and Solubilization of Pristine Single‐Walled Nanotubes in Bile Salt Micelles

Wenseleers¹,

Власов

Goovaerts

et al. 2004

Adv Funct Materials

474

562

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We have investigated a wide variety of surfactants for their efficiency in dissolving isolated single‐walled carbon nanotubes (SWNTs) in water. In doing so, we have completely avoided the harsh chemical or mechanical conditions, such as acid or ultrasonic treatments, that are known to damage SWNTs. Bile salts in particular are found to be exceptionally effective in dissolving individual tubes, as evidenced by highly resolved optical absorption spectra, bright bandgap fluorescence, and the unprecedented resolution (∼ 2.5 cm–1) of the radial breathing modes in Raman spectra. This is attributed to the formation of very regular and stable micelles around the nanotubes providing an unusually homogeneous environment. Quantitative information concerning the degree of solubilization is obtained from absorption spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Efficient Isolation and Solubilization of Pristine Single‐Walled Nanotubes in Bile Salt Micelles

Wenseleers¹,

Власов

Goovaerts

et al. 2004

Adv Funct Materials

474

562

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“…There are four prominent methods for achieving dispersion: mechanical methods 8,10 , functionalizing the SWNTs [11][12][13][14][15][16][17][18][19][20] , using surfactants 21 , and non-covalent modification by using small molecules and polymer dispersants [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] . There are advantages and disadvantages associated with each of the listed methods.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Aromatic/Aliphatic Polyimides as Dispersants for Single Wall Carbon Nanotubes

et al. 2006

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Novel aromatic/aliphatic polyimides were prepared from 2,7-diamino-9,9′-dioctylfluorene (AFDA) and aromatic dianhydrides. Upon investigating the effectiveness of these polyimides for dispersing single wall carbon nanotubes (SWNTs) in solution, three were discovered to disperse SWNTs in N,N-dimethylacetamide (DMAc). Two of these polyimides, one from 3,3′,4,4′-oxydiphthalic anhydride (ODPA) and one from symmetric 3,3′,4,4′-biphenyltetracarboxylic dianhydride (s-BPDA), were used to prepare nanocomposites. Homogeneous polyimide/SWNT suspensions from both polymers were used in the preparation of films and fibers containing up to 1 wt% SWNTs. The samples were thermally treated to remove residual solvent and the films were characterized for SWNT dispersion by optical and high resolution scanning electron microscopy (HRSEM). Electrical and mechanical properties of the films were also determined.Electrospun fibers were examined by HRSEM to characterize SWNT alignment and orientation.

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“…Given these interesting properties, their combination with polymers offers a composite material with promising scientific enhancement. [1][2][3][4][5][6][7][8][9][10] Nanofiber-reinforced composites can yield smaller and lighter components that can provide greater flexibility in a variety of applications. The thermal conductivity of VGCNF composites makes them attractive for electronic heat sinks and radiator fins, for example.…”

Section: Introductionmentioning

confidence: 99%

Rheological analysis of vapor‐grown carbon nanofiber‐reinforced polyethylene composites

Lozano¹,

Yang²,

Zeng³

2004

J of Applied Polymer Sci

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ABSTRACT:The melt rheological analysis of high-density polyethylene reinforced with vapor-grown carbon nanofibers (VGCNFs) was performed on an oscillatory rheometer. The influence of frequency, temperature, and nanofiber concentration (up to 30 wt %) on the rheological properties of composites was investigated. Specifically, the viscosity increase is accompanied by an increase in the elastic melt properties, represented by the storage modulus GЈ, which is much higher than the increase in the loss modulus GЉ. The composites and pure PE exhibit a typical shear thinning behavior as complex viscosity decreases rapidly with the increase of shearing frequency. The shear thinning behavior is much more pronounced for the composites with high fiber concentration. The rheological threshold value for this system was found to be around 10 wt % of VGCNF. The damping factor was reduced significantly by the inclusion of nanofibers into the matrix.

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Evolution and evaluation of the polymer/nanotube composite

Cited by 91 publications

References 1 publication

Efficient Isolation and Solubilization of Pristine Single‐Walled Nanotubes in Bile Salt Micelles

Efficient Isolation and Solubilization of Pristine Single‐Walled Nanotubes in Bile Salt Micelles

Investigation of Aromatic/Aliphatic Polyimides as Dispersants for Single Wall Carbon Nanotubes

Rheological analysis of vapor‐grown carbon nanofiber‐reinforced polyethylene composites

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