Synthesis of carbon nanotubes from bulk polymer

Cho, Woo–Seok; Hamada, Etsuo; Kondo, Yukihito; Takayanagi, Kunio

doi:10.1063/1.117949

Cited by 69 publications

(56 citation statements)

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“…Details of the experimental procedure are reported elsewhere. 20 CNTs were synthesized using polyester as a precursor obtained from the reaction between citric acid and ethylene glycol, according to the procedure described by Cho et al 21 Briefly, anhydrous citric acid was dissolved in ethylene glycol at a molar ratio of 1 : 4 and left to react with agitation at 508C for 2 h until the mixture became transparent. The mixture was then heated at 1508C for 48 h with continuous agitation allowing the removal of excess solvent.…”

Section: Methodsmentioning

confidence: 99%

Polymer nanocomposites containing carbon nanotubes and miscible polymer blends based on poly[ethylene‐co‐(acrylic acid)]

Antolín-Cerón

Gómez-Salazar

Soto

et al. 2008

J of Applied Polymer Sci

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Four binary polymer blends containing poly [ethylene-co-(acrylic acid)] (PEAA) as one component, and poly(4-vinyl phenol-co-2-hydroxy ethyl methacrylate) (P4VPh-co-2HEMA) or poly(2-ethyl-2-oxazoline) (PEOx) or poly(vinyl acetate-co-vinyl alcohol) (PVAc-co-VA) or poly (vinylpyrrolidone-co-vinyl acetate) (PVP-co-VAc) as the other component were prepared and used as a matrix of a series of composite materials. These binary mixtures were either partially or completely miscible within the composition range studied and were characterized by differential scanning calorimetry (DSC) and Fourier transformed infrared spectroscopy (FTIR). Carbon nanotubes (CNTs) were prepared by a thermal treatment of polyester synthesized through the chemical reaction between ethylene glycol and citric acid over an alumina boat. High resolution transmission electron microscopy (HRTEM) was used to characterize the synthesized CNTs. Films of composite materials containing CNTs were obtained after evaporation of the solvent used to prepare solutions of the four types of binary polymer blends. Young's moduli of the composites were obtained by thermomechanical analysis at room temperature. Only one glass transition temperature was detected for several compositions on both binary blends and the composite material matrices. Evidence of hydrogen bond formation was recorded for both miscible blends and composite materials. The degree of crystallinity and Young's moduli of the CNT-polymer composites increased compared to the single polymer blends.

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Section: Methodsmentioning

confidence: 99%

Polymer nanocomposites containing carbon nanotubes and miscible polymer blends based on poly[ethylene‐co‐(acrylic acid)]

Antolín-Cerón

Gómez-Salazar

Soto

et al. 2008

J of Applied Polymer Sci

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“…The present work shows that MWNTs can be obtained by heating grass containing much tubular cellulose in the presence of a suitable amount of oxygen [16,17]. The treatments of removing protein and grease in the synthetic method of MWNTs from vascular bundles will be unnecessary if the absorbent cotton is used as the source of carbon.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Multi-walled Carbon Nanotubes/ZnO Nanocomposites using Absorbent Cotton

Luo

Qin

2011

Nano-Micro Lett.

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This letter focuses on the synthesis of multi-walled carbon nanotubes (MWNTs) and MWNTs/ZnO nanocomposites using absorbent cotton. The MWNTs have been synthesized by a rapid heating of absorbent cotton at different temperature (400℃, 550℃, 600℃). The MWNTs/ZnO nanocomposites have been synthesized by heating mixtures of Zn(OH)2/H2O/absorbent cotton at different temperature (at about 550℃ and 600℃). The X-ray diffraction (XRD) pattern and energy dispersive spectrum (EDS) clearly show that the pure MWNTs and ZnO nanocomposites (with a mean size of 35.9 nm) were synthesized. The scanning electron microscopy (SEM) images demonstrate that the structure of synthesized MWNTs was middle-hollow, with inner and outer diameter of around 10 and 80 nm. The ZnO nanocomposites that had grown on the walls of MWNTs were nonuniform and agglomerated, with an outer diameter of around 110 nm. The selected area diffraction (SAD) patterns and Raman spectrum indicate that the MWNTs were well-crystallised, and there are a few defects in the walls. Infrared absorption spectroscopy (IR) spectra suggest that the surface of MWNTs has been covered by ZnO.

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“…[16] There have been numerous efforts on further advancing such synthesis route of low cost CNTs. Work have been done about types of plastics, conversion processes, growth conditions, catalysts, and quantities and qualities of versions, and the work examined processes based on the reactors types alone, such as autoclave, fix bed, moving bed, fluidized bed, etc.…”

Section: Waste Plastics As Low Cost Feedstocks For Carbon Materialsmentioning

confidence: 99%

Converting Waste Plastics into High Yield and Quality Carbon-Based Materials

Kong¹,

Yang²,

Zhang³

et al. 2017

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Recycling waste plastics including polypropylene, polyethylene, polyethylene terephthalate, polystyrene, etc, is a very important scientific, social and economic topic. Despite significant advances in recent years, approximately 400 million tons of waste plastics are still disposed by landfill. This is obviously not an effective solution due to plastic's non-biodegradable character. Aside from mechanical recycling, which turns waste plastics into new products, and thermal recycling, which releases the thermal energy through combustion of waste plastics, chemical recycling converts waste plastics into feedstock for chemicals/materials/fuels production. This article reviews previous work on the pyrolysis and catalytic decomposition route that converted plastics into carbon-based materials, which exhibited extraordinary physical and chemical properties. However, their production processes are both resource and energy-intensive. Therefore, recycling technologies for waste plastics are still at an early stage and more innovation in waste plastic recycling is needed.

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Synthesis of carbon nanotubes from bulk polymer

Cited by 69 publications

References 0 publications

Polymer nanocomposites containing carbon nanotubes and miscible polymer blends based on poly[ethylene‐co‐(acrylic acid)]

Polymer nanocomposites containing carbon nanotubes and miscible polymer blends based on poly[ethylene‐co‐(acrylic acid)]

Synthesis of Multi-walled Carbon Nanotubes/ZnO Nanocomposites using Absorbent Cotton

Converting Waste Plastics into High Yield and Quality Carbon-Based Materials

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