Carbon grafted

The electrocatalysts for oxygen reduction were prepared as follows. These complex compounds were inoculated onto the carbon (AG-3, BET area near 800 m2/g) by means of adsorption from dimethylformamide solutions. The portion of complex compound weighed so as to achieve 3% of Co content was mixed with the carbon, then 5 ml of dimethylformamide per 1 g of the carbon were added and the mixture was cured at room temperature for 24 hours. Series of samples obtained were thermally treated (pyrolyzed), and the resulting grafted carbons were tested as electrode materials in the reaction of molecular oxygen reduction. 

Daniel, S., et al., A review ofDNA functionalized/grafted carbon nanotubes and their characterization. Sensors and Actuators B Chemical, 2007.122(2) p. 672-682. 

Table 11. Properties of vulcanizates filled with a polystyrene HAF grafted carbon black 641...

It appears (Table 11) that the reinforcing ability exhibited by a HAF carbon black in polybutadiene or EPR is much lower after its surface has been previously modified by grafting of polystyrene M). Such results cannot, however, be associated with the elastomer s incompatibility towards the polystyrene grafts since poly-isoprene-grafted carbon blacks yield similar conclusions 65). 

Daniel S Rao TP Rao KS Rani SU Naidu GRK Lee HY Kawai T, A review of DNA functionalized/ grafted carbon nanotubes and their characterization, Sens. Actuators B, 2007, 122, 672-682. 

It should be pointed out that this method relies on the efficient dispersion of nanotubes in the relevant solvent. The choice of solvent is generally made based on the solubility of the polymer. However, pristine nanotubes usually cannot be well dispersed in most solvents. To get around this problem, Xia et al. (17) compared the dispersion of MWNT-graft-PU, MWNT-OH and raw MWNTs in 0.2% aqueous solution of sodium lauryl sulfate. The results showed that MWNT-graft-PU has a better dispersion stability compared to MWNTs and MWNT-OH. The incorporation of polyurethane-grafted carbon nanotubes had a better reinforcing effect compared to the raw carbon nanotubes. This should be attributed to the improved interfacial interaction between polyurethane matrix and carbon nanotubes. 

Polyaniline-grafted carbon black was prepared by Srinivas [3] and then platinized with chloroplatinic acid, as illustrated below, and used as a fuel cell component. Sulfurized analogues, (II), were prepared by Srinivas [4] and were also used as fuel cell components. 

Figure 6.20. Stability of grafted carbon black (A), carbon black with physically absorbed polymer (B) and untreated carbon black (C). [Adapted, by permission, from Tsubokawa N, Hosoya M, Kurumada J, Reactive Functional Polym., 11, No.l, 1995, 75-81.]...

Deposition of Nanoparticles onto lonic-Uquid-Grafted Carbon Nanotubes... 

Yang YK, Qiu SQ, Wang XB et al (2010) Functionalization and structure control of carbon nanotubes with polymers polymer-grafted carbon nanotubes. Prog Chem 22 684-695... 

Yang YK, Mao LB, Xie XL et al (2007) Liquid crystallinity and novel assembly of amorphous polymer grafted carbon nanotubes. Solid State Phenom 121-123 1411-1414... 

Zhang RH, Yang YK, Xie XL et al (2010) Dispersion and crystallization studies of hyperbranched poly(urea-urethane)s-grafted carbon nanotubes filled polyamide-6 nanocomposites. Compos A Appl Sci Manuf 41 670-677... 

Pei XW, Xia YQ, Liu WM et al (2008) Polyectrolyte-grafted carbon nanotubes synthesis, reversible phase-transition behavior, and tribological properties as lubricemt additives. J Polym Sci Polym Chem 46 7225-7237... 

Herman M, Kaya ZN, Vasani R, Lewis DA. Poly(2-hydroxyethyl methacrylate) grafted carbon nanotubes A... 

N. Tsubokawa, Preparation and properties of polymer-grafted carbon nanotubes and nanofibers, Polymer J., 37, 637-655 (2005). 

Figure 10.34 Schematic growth mechanism for PPY wires from a PEA grafted carbon anode. (Reprinted with permission from Chemistry A European Journal, Electrochemical Synthesis of Conjugated Polymer Wires and Nanotubules by C. JSrdme, S. Demoustier-Champagne, R. Legras and R. Jerome, 6, 17, 3089-3093. Copyright (2000) Wiley-VCH)...

Polymer-grafted Carbon Nanotubes via Grafting From Approach... 

Polymer-grafted Carbon Nanotuhes via Grafting From Approach 143... 

Polymer-grafted Carbon Nano tubes via Grafting From Approach 163... 

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