F-SWNTs

Scheme 1.15 Functionalization ofSWCNTs and fluorinated F-SWNTs with benzoyl (R = C6H5) and lauroyl (R = CnH23) peroxides.

Polymer nanocomposites with medium density polyethylene were reported with a variety of fluorinated and un-fluorinated nanotubes (37). The nanocomposites consisting of 1 wt% F-SWNT-C H (fluorinated and surface treated nanotubes) nanotubes showed an increase in tensile strength by 52.4%, modulus by 15.9% and elongation by 18.9% as compared to the pure polymer. The composites with 1 wt% F-SWNT-CnH23 (fluorinated and surface treated nanotubes) had an increase of 28.3% in modulus as compared to the pure polymer. The tensile strength also increased from 4.33 MPa for the pure polymer to 5.01 Mpa for the nanocomposite, the elongation at... 

Unidym 50-900 SWNT, high-purity SWNT, DWNT, high-purify DWNT, F-SWNT... 

Figure 3.19 Delivery of plasmid DNA by f-SWNTs and expression in cells. Levels of marker gene (b-gal) expression in CHO cells in relative light units (RLU) per mg total protein. Reprinted with permission from ref. 170. Copyright 2004 Wiley-VCH Verlag GmbH Co. KGaA.

Armentano I, Alvarez-Perez MA, Carmona-Rodriguez B, Gutierrez-Ospina I, Kenny JM, Arzate H. Analysis of the biomineralization process on SWNT-CCX)H and F-SWNT films. Mater Sci Eng C 2008 28 1522-9. 

Scheme 10.2. Pi oposed covalent bonding of polyethylene to f-SWNTs during shear mixing processiiig [49]...

Figure 10.14. Storage modulus vs. temperature for neat polyethylene, 5 wt% SWNT/PE and 5 wt% f-SWNT/PE nanocomposites [49]...

Figure 10.15. Compai isoii of tensile strengths (a), elastic moduli (b) and percent elongations (c) for 130 pm fibers of PP, SWNT/PP and f-SWNT/PP [50]...

Figure 15 presents transmission electron microscope (TEM) images of the Au nanoparticles synthesized on the f-SWNTs, which have been treated in the IL for plasma irradiation time (b) f = 1 min and (c) t = 10 min. Pm = 60 Pa, and fo = 1 mA. Here the TEM image of the f-SWNTs which are not previously treated by the plasma irradiation is also present as a reference in Fig. 15(a). It is found that the high density and mono-dispersed Au nanoparticles are synthesized on the f-SWNTs when the SWNTs are previously treated by the plasma irradiation, while only a few Au nanoparticles are observed on the f-SWNTs in the absence of the plasma irradiation. In addition, the distance between the Au nanoparticles becomes small with an increase in the plasma irradiation time. This result means that the distance between the Au nanoparticles can be controlled by functionalization of the SWNTs using the plasma irradiation in the ionic liquid. 

The appearance of oxidation peaks in the CV is a direct evidence of PF f and BF 7 anions incorporation within the SWNT structure. The macromolecule Cn should then bear a positive charge as a result of subsequent oxidation following. In the case of PF 7 the anodic oxidation is ... 

H.J. Barraza, F. Pompeo, E.A. O Rear, and D.E. Resasco, SWNT-filled thermoplastic and elastomeric composites prepared by miniemulsion polymerization. Nano Lett. 2, 797-802 (2002). 

However the obtained system of the equations remains still too difficult for analyzing. For definiteness the (6,0) SWNT has been studied (N=6). To facilitate the solution of the equation system (8) we shall research first of all the case when only one oscillation mode (k=0) is induced. Obviously, the case corresponds to the oscillations, which are homogeneous along SWNT perimeter. For further simplification of the equation system we shall suppose that (pG = (p G, y/a = f/. Using Lorenz s invariance property for running... 

Figure 9 Spectroscopic in situ imaging of the laser plasma (f < 200 ps) and Rayleigh scattering images of the pliune (f > 200 ps) during the growth of SWNTs. (Reprinted with permission from A.A. Puretzky, H. Schittenhehn, X. Fan, M.J. Lance, L.F. Allard, and D.B. Geohegan, Phys. Rev. B., 2002, 65, 245425. 2002 hy the American Physical Society)...

Figure 14 Different types of carbon nanotubes formed by irradiation (A) and CVD synthesis (B). (A) Cross-linking of SWNTs using 60 s electron irradiation (1.25 MeV with beam intensity ca. 10 Acm ) at 800 °C (a) before irradiation and (b) after irradiation. (Reprinted with permission from M. Terrones, F. Banhart, N. Grobert, J.-C. Charlier, H. Terrones, and P.M. Ajayan, Phys. Rev. Lett, 2002, 89, 075505. 2002 by the American Physical Society.) (B) Y -Jimction MWNTs synthesized using nickelocene with thiophene at 1000 °C. (Ref. 91. Reproduced by permission of American Instimte of Physics)...

Figure 15 (a) A schematic of the process for fabricating nanotube/carbide heterojunction by means of solid- solid reaction. M represents Si or Ti and MC represents formation of metal carbide, (b) TEM images showing SiC nanorods interfaced with SWNT bundles and a single SWNT. (Reprinted with permission from Y. Zhang, T. Ichihashi, E. Landree, F. Nihey, and S. lijima, Science, 1999, 285, 1719. 1999 AAAS)... 

Figure 27 (a) Stress versus strain curves of different SWNTs ropes obtained in tensile-loading experiments carried out using AFM for eight ropes of SWNTs having diameter from 19 to 41 nm. (Reprinted with permission from M.-F. Yu, B.S. Files, S. Arepalli, and R.S. Ruoff, Phys. Rev. Lett., 2000, 84, 5552. 2000 by the American Physical Society.) (b) Stress versus strain curves for individual MWNTs. (Reprinted with permission from M.-F. Yu, O. Lourie, M.J. Dyer, K. Moloni, T.F. Kelly, and R.S. Ruoff, Science, 2000, 287, 637. 2000 AAAS)... 

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