Characterizing composite of multiwalled carbon nanotubes and POE‐<i>g</i>‐AA prepared via melting method

Wu, Chin‐San

doi:10.1002/app.25839

Cited by 15 publications

(8 citation statements)

References 47 publications

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“…For the analysis of the absorption features, we recorded IR spectra of both CNT-COOH and pyrrole functionalized CNT. The spectra for CNT-COOH show the characteristic CNT absorption peaks similarly to other reports [16,17] at 1505-1560 cm −1 (aromatic ring), 1308 cm −1 (-C-O), and 1640 cm −1 (-C=C-). Moreover, the stretching vibration of the C=O group is identified at 1116 and 1690 cm −1 together with a hydroxyl-stretching weak band at 3300-3500 cm −1 [16].…”

Section: Resultssupporting

confidence: 84%

“…The spectra for CNT-COOH show the characteristic CNT absorption peaks similarly to other reports [16,17] at 1505-1560 cm −1 (aromatic ring), 1308 cm −1 (-C-O), and 1640 cm −1 (-C=C-). Moreover, the stretching vibration of the C=O group is identified at 1116 and 1690 cm −1 together with a hydroxyl-stretching weak band at 3300-3500 cm −1 [16]. The band at 1690 cm −1 disappears and strong absorption peaks appear at 1714, 1614, and 1598 cm −1 (pyrrole ring-stretching mode) as a result of the esterification of CNT-COCl with N-(6-hydroxyhexyl)pyrrole.…”

Section: Resultssupporting

confidence: 84%

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Supercapacitance of Single‐Walled Carbon Nanotubes‐Polypyrrole Composites

Raicopol

Prună

Pilan

2013

Journal of Chemistry

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The composites based on carbon nanotubes (CNTs) and conducting polymers (CPs) are promising materials for supercapacitor devices due to their unique nanostructure that combines the large pseudocapacitance of the CPs with the fast charging/discharging double-layer capacitance and excellent mechanical properties of the CNTs. Here, we report a new electrochemical method to obtain polypyrrole (PPY)/single-walled carbon nanotube (SWCNT) composites. In the first step, the SWCNTs are covalently functionalized with monomeric units of pyrrole by esterification of acyl chloride functionalized SWCNTs and N-(6-hydroxyhexyl)pyrrole. In the second step, the PPY/SWCNTs composites are obtained by copolymerizing the pyrrole monomer with the pyrrole units grafted on SWCNTs surface using controlled potential electrolysis. The composites were further characterized by cyclic voltammetry and electrochemical impedance spectroscopy. The results showed good electrochemical charge storage properties for the synthesized composites based on PPY and SWCNTs covalently functionalized with pyrrole units making them promising electrode materials for high power supercapacitors.

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Section: Resultssupporting

confidence: 84%

Section: Resultssupporting

confidence: 84%

Supercapacitance of Single‐Walled Carbon Nanotubes‐Polypyrrole Composites

Raicopol

Prună

Pilan

2013

Journal of Chemistry

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“…It was reported in various studies that introducing nanotubes in a polymer matrix increased glass transition, melting and thermal decomposition temperatures due to hindered chain and segmental mobility of polymers. [110][111][112][113][114][115] It was observed that the glass transition temperature (T g ) of PU/amide-functionalized MWCNT elastomer composite had increased by 10 C and thermal stability was also improved relative to the unfilled PU properties. 81 In a study, DSC curves of the thermoplastic PU/MWCNT nanocomposites with different mass ratios were recorded.…”

Section: Mechanical Properties Of Pu/cnt Compositesmentioning

confidence: 99%

Advances in thermoplastic polyurethane composites reinforced with carbon nanotubes and carbon nanofibers: A review

Sattar

Kausar

Siddiq

2014

Journal of Plastic Film & Sheeting

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Carbon nanotubes (CNTs) have long been recognized as the stiffest and strongest man-made material known to date. Owing to high electrical conductivity, CNTs have also gained interest in the area of electrical appliances and communication related applications. Moreover, carbon nanofibers (CNFs) depict fine electrical and mechanical profile. Due to their miniscule size, excellent mechanical, electrical, and thermal properties, CNTs can only be beneficial if they are homogeneously dispersed and embedded into lightweight engineering polymer matrices. Adding small amounts of CNTs strongly improve the electrical, thermal, and mechanical properties of the composites. In order to enhance their chemical affinity to polymer matrices, chemically modifying the graphitic sidewalls and tips is necessary. This article reviews the processing technology and improvement of various properties of carbon nanotube-reinforced thermoplastic polyurethane (PU) composites. Initially, the structure, morphology, mechanical, thermal, and electrical properties of nanotubes are described. Then various strategies for fabricating PU/CNTs composites and their properties are discussed. To conclude, recent developments in the field of mechanical, thermal, and electrical properties of thermoplastic PU reinforced with nanotubes and nanofibers are reviewed.

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“…The oxidation favors the formation of phenol groups in MWCNTs from both suppliers; ester groups seem more favorable in case of the MWCNT FC 99 , whereas in the case of the MWCNT BMS 95 the presence of ketones and carboxylic acid groups is predominant. The formation of carbonyl and hydroxyl groups at MWCNTs after the reaction with HNO 3 (and other carbonaceous fibers)50 has been widely described by other groups using different characterization techniques,48, 51–55 where a qualitative increase in FTIR signal intensity in the region of the carbonyl or hydroxyl groups is associated to a discrete increase on the concentration of oxygen atoms at the surface of the carbon nanotubes. This increment has proven to be satisfactory for further reactions of the carbon nanotubes with small molecules51 or with polymer chains 52, 56…”

Section: Resultsmentioning

confidence: 99%

Modification of multiwall carbon nanotubes by grafting from controlled polymerization of styrene: Effect of the characteristics of the nanotubes

Albuerne¹,

Boschetti‐de‐Fierro²,

Abetz³

2010

J Polym Sci B Polym Phys

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Linear polystyrene chains were grown from the convex surface of two commercially available multiwall carbon nanotubes (MWCNTs) with similar diameter but different lengths. The MWCNTs were supplied from Bayer Material Science® (purity >95%, external diameter = 13–16 nm, length = 1–10 μm, denoted MWCNTBMS95) and FutureCarbon GmbH (purity >99%, external diameter = 15 nm, length = 5–50 μm, denoted MWCNTFC99). The MWCNTs were oxidized with nitric acid, consecutively reacted with thionyl chloride, glycol or poly(ethylene glycol), 2‐bromo‐2‐methylpropionyl bromide and finally with styrene under atom transfer radical polymerization (ATRP) conditions. The content of polystyrene grafted from the surface of the MWCNTs can be controlled by adjusting the molecular weight of the poly(ethylene glycol), the initiator concentration and the monomer to carbon nanotube weight ratio. Under comparable experimental conditions, a higher amount of polystyrene is grafted from the MWCNTBMS95 than from MWCNTFC99. The difference in dimensions and the state of aggregation of the carbon nanotubes influence the grafting from polymerization reactions, where relative shorter and tightly aggregated carbon nanotubes promote higher polymerizations yields than longer and less aggregated carbon nanotubes. The increase of the viscosity of the carbon nanotube dispersion decreases the polymer grafting content. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 1035–1046, 2010

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Characterizing composite of multiwalled carbon nanotubes and POE‐g‐AA prepared via melting method

Cited by 15 publications

References 47 publications

Supercapacitance of Single‐Walled Carbon Nanotubes‐Polypyrrole Composites

Supercapacitance of Single‐Walled Carbon Nanotubes‐Polypyrrole Composites

Advances in thermoplastic polyurethane composites reinforced with carbon nanotubes and carbon nanofibers: A review

Modification of multiwall carbon nanotubes by grafting from controlled polymerization of styrene: Effect of the characteristics of the nanotubes

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