Multi-walled carbon nanotube conditions

Whereas multi-wall carbon nanotubes require no catalyst for their growth, either by the laser vaporization or carbon arc methods, catalyst species are necessary for the growth of the single-wall nanotubes [156], while two different catalyst species seem to be needed to efficiently synthesize arrays of single wall carbon nanotubes by either the laser vaporization or arc methods. The detailed mechanisms responsible for the growth of carbon nanotubes are not yet well understood. Variations in the most probable diameter and the width of the diameter distribution is sensitively controlled by the composition of the catalyst, the growth temperature and other growth conditions. 

Multi-wall carbon nanotube (CNT) arrays synthesis by the atmospheric pressure CVD method has been investigated. Thermal decomposition of fluid hydrocarbons (o- and p-xylole f sl liC l which as a solution with the volatile catalyst (ferrocene Fe(CsHs)2) was introduced into the synthesis zone by injection was employed. Different metal/dielectric/semiconductor (MDS) structures, in particular Ti/SifT/Si. AI2O3 membrane/Ni catalyst were used. CNTs growth selectivity can be regulated under certain conditions. The vertically aligned close-packed CNT arrays have been obtained as well as single CNTs in the pores of AI2O3 matrix with Ni catalyst. 

Aya Ayatollahi, M. R., Shadlou, S., Shokrieh, M. M. Fracture toughness of epoxy/multi-walled carbon nanotube nano-composites under bending and shear loading conditions. Mater. Design 32... 

Ambrosini Daniel, de Borbon Fernanda. (2012). On the Influence of the Shear Deformation and Boundary Conditions on the Transverse Vibration of Multi-Walled Carbon Nanotubes. Comput Mater. Sci., 53, 214-219. 

Polychloroprene is a family of synthetic mbbers, exhibits good chemical stability, and maintains flexibility over a wide temperature range. It is used in a wide variety of applications, such as laptop sleeves, orthopedic braces, electrical insulation, liquid and sheet applied elastomeric membranes or flashings, and automotive fan belts, and others. Subramaniam et al. studied the thermal degradation of polychloroprene mbber composites based on unmodified and ionic liquid modified multi-walled carbon nanotubes (MWCNTs), in aerobic and anaerobic conditions. They found that the polychloroprene mbber and its composite exhibit three and four... 

Eguilaz, M., Ferreyra, N.E, and Rivas, G.A. (2014) Dispersions of hollow and bamboo-like multi-walled carbon nanotubes in polyethyleneimine critical analysis of the preparation conditions and applications for electrochemical sensing. Electroanalysis, 26 (11), 2434- 2444. 

Wang J, Yin G, Shao Y, Wang Z, Gao Y (2008) Electrochemical durability investigation of single-walled and multi-walled carbon nanotubes under potentiostatic conditions. J Power Sourc 176(1) 128-131... 

Lipihska ME, Rebelo SLH, Freire C. lron(lll) porphyrin anchored onto organosilylated multi-walled carbon nanotubes as an active catalyst for epoxidation reactions in mild conditions. J Mater Sci 2014 49 1494-505. 

In fact, under the same milling conditions, the melted zone in polyethylene multi-walled carbon nanotube fiber is much bigger than that in the neat polyethylene. 

Osmieri L, Monteverde Videla AHA, Specchia S (2015) Activity of Co-N multi walled carbon nanotubes electrocatalysts for oxygen reduction reaction in acid conditions. J Power Sources 278 296-307... 

Song BJ, Ahn JW, Cho KK, Roh JS, Lee DY, Yang YS, Lee JB, Hwang DY, Kim HS (2013) Electrical and mechanical properties as a processing condition in polyvinylchloride multi walled carbon nanotube composites. J Nanosci Nanotechnol 13(ll) 7723-7727 Speltini A, Merli D, Dondi D, Milanese C, Galinetto P, Bozzetti C, Profumo A (2013) Radiation-induced grafting of carbon nanotubes on HPLC silica microspheres theoretical and practical aspects. Analyst 138(13) 3778-3785... 

Hwang, T.Y., Kim, H.J., Ahnand, Y., and Lee, J.W. (2010) Influence of twin screw extrusion processing condition on the properties of polypropylene/multi-walled carbon nanotube nanocomposites. Kor.-Aust. Rheol.J., 22, 141-148. 

Multi-walled carbon nanotubes were immersed in a dichloromethane (DCM) solution and sonicated at room temperature for 15 min using an ultrasonic homogenizer from PALMER INSTRUMENTS, then PLDL was added to the DCM/MWCNT solution (5%PLDL solution) and sonicated at room temperature for 1 min using the same homogenizer. Dispersion conditions were chosen on the basis of our previous studies [16,17], The prepared suspensions were then poured onto a Petri dish and left to evaporate the solvent at room temperature for 24h and under vacuum for two days. In this way four kinds of samples based on the polylactide solution were prepared ... 

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