Vinyl–carbon nanotubes for composite polymer materials

Xu, Ke; Ma, Wei; Zhang, Hao‐Li; Zhang, Xu; Guo, Yun; Xiong, Yuqing

doi:10.1002/app.28754

Cited by 20 publications

(14 citation statements)

References 27 publications

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“…Covalent treatments could also negatively affect the intrinsic electrical properties of the CNTs and have a profounding effect on the metallic characteristics of metallic CNTs [48]. Enhanced reactivity between CNT and the polymer would result in wrapping or encapsulation of CNT surfaces by the polymer due to coupling or grafting lowering the bulk conductivity of the composite [49]. The phonon scattering length is also expected to be lowered leading to lower thermal conductivities [50].…”

Section: Modification Of Cnt Surfacementioning

confidence: 97%

“…10. This huge variation is due to the fact that electrical percolation is dependent on the nature of matrix [63][64][65][66][67] and the type of CNT [78,84], aspect ratio of the CNTs [47,114], extent of CNT dispersion [64,65], CNT functionalization [49,115], processing approach and parameters [65,84], and alignment and orientation of the fillers [94,102].…”

Section: Electrical Propertiesmentioning

confidence: 99%

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Thermoplastic Nanocomposites with Carbon Nanotubes

Sathyanarayana

Hübner²

2013

Structural Nanocomposites

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The potential impact of light-weight structures with multifunctional properties for engineering applications drives significant research and development activities on nanocomposites. Polymer nanocomposites especially those with carbon nanotubes (CNTs) are very attractive for conductive composites with good structural characteristics. The biggest challenge facing the commercial success of CNT based composites is the intrinsic strength of their agglomerates which prevents good filler dispersion in the matrix, a key attribute for any reinforcement. This chapter is a review of the CNT incorporated thermoplastic composites processed mainly containing economic multi-walled carbon nanotubes (MWCNTs). We present an overview of CNTs (their structure, production process, properties, surface modification, applications etc.) and the mechanism of their dispersion in thermoplastic matrices. The processing of thermoplastic matrices via the conventional twin-screw compounding approach is discussed along with the influence of process parameters on MWCNT dispersion. The role of secondary processing operation on composite properties is also highlighted. The mechanical, electrical and thermal properties of the thermoplastic-CNT composites are reviewed highlighting the key findings and shortcomings. We conclude throwing some light on the developments on multi-scale reinforcements in polymeric matrices.

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Section: Modification Of Cnt Surfacementioning

confidence: 97%

Section: Electrical Propertiesmentioning

confidence: 99%

Thermoplastic Nanocomposites with Carbon Nanotubes

Sathyanarayana

Hübner²

2013

Structural Nanocomposites

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“…1(A-C), respectively. All these substances present the characteristic absorption of CNTs at 1520 cm À1 for conjugated C 5 C stretching [32], 1640 cm À1 for the non-conjugated C 5 C stretching [33], 1700 cm À1 for C 5 O stretching [33,34] and around 3500 cm À1 for -OH stretching [35] from the carboxyl groups introduced by the HNO 3 /HCl treatment of MWNTs. Carboxyl groups are reported to be the major product of nitric acid oxidation of CNTs [36], although the oxidation reaction might produce other oxygen containing functional groups as reported for some carbon materials [37].…”

Section: Atr-ir Spectrum and Sem Imagementioning

confidence: 99%

Multi‐walled carbon nanotube composites with polyacrylate prepared for open‐tubular capillary electrochromatography

Chen

Lin

2010

Electrophoresis

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A method was developed for the chiral separation of dipeptides with two chiral centers. Although all analyzed peptides contain chromophores and they can be detected by UV-adsorption detection without any derivatization, the chiral separations were not achieved for non-derivatized peptides using the same chiral selectors and experimental conditions. In this paper, these dipeptides were precolumn derivatized by using naphthalene-2, 3-dicarboxyaldehyde as a tagging reagent. In the presence of 2-hydroxypropyl-beta-CD and sodium deoxycholate, naphthalene-2,3-dicarboxyaldehyde-tagged dipeptide enantiomers were well resolved by MEKC. Good separation of all enantiomers was obtained within 14 min. The proposed method was applied to chiral separation of dipeptide enantiomers in spiked human serum samples.

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“…37,38 Hydroxyl-functionalized MWNTs (MWCNT-OH) were prepared by refluxing of pristine MWCNTs in a 50-mL mixture of sulfuric and nitric acid (1:1, v/v) for 5 h. 100 mg of dried acidtreated MWCNTs (MWCNT-OH), 50 mL of DMF, and 5.0 mL of triethylamine (36 mmol) were charged into a flask equipped with a magnetic stir bar. After being sonicated for 30 min, the flask was cooled to 0…”

Section: Preparation Of Vinyl Group-modified Mwcnts (Mwcnt C C)mentioning

confidence: 99%

Improvement in Oil Absorbency by Using Modified Carbon Nanotubes in Preparation of Oil Sorbents

Pourjavadi

Doulabi

2012

Adv Polym Technol

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This article reports the first oil-absorbent cross-linked copolymer consisting of modified multiwalled carbon nanotube (MWCNT) and showing high oil absorbency. Also, to investigate and evaluate the effective parameters on oil absorbency, cross-linked dodecyl methacrylate (DDMA)-diphenylacrylamide (DPAA) and DDMA-butyl acrylate (BA) copolymers were synthesized. DDMA was copolymerized with different mol% of DPAA or BA and cross-linked using azobisisobutyronitrile as the initiator and various weight percentages of 1,4-butandiol dimethacrylate, methylene bisacrylamide, or vinyl group-modified MWCNT cross-linkers. The effects of monomer feed composition, cross-linker concentration, and the hydrophobicity of the copolymer units on swelling properties of the cross-linked copolymers were studied through the oil-absorbency tests. It was found that in the reactions used vinyl group-modified MWCNTs act as cross-linking agents for the free radical polymerization, carbon nanotubes (CNT) played the other roles, that is, as a comonomer and an adsorbent. The oil absorbents containing CNTs showed the highest oil absorbency (toluene, 42.6 g; crude oil, 36.0 g/g oil absorbent). Therefore, CNT-based oil absorbent can be introduced as a promising candidate for

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Vinyl–carbon nanotubes for composite polymer materials

Cited by 20 publications

References 27 publications

Thermoplastic Nanocomposites with Carbon Nanotubes

Thermoplastic Nanocomposites with Carbon Nanotubes

Multi‐walled carbon nanotube composites with polyacrylate prepared for open‐tubular capillary electrochromatography

Improvement in Oil Absorbency by Using Modified Carbon Nanotubes in Preparation of Oil Sorbents

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