Control of multiwall carbon nanotubes dispersion in polyamide6 matrix: An assessment through electrical conductivity

Kodgire, Pravin; Bhattacharyya, Arup R.; Bose, Suryasarathi; Gupta, Nitin; Kulkarni, Ajit R.; Misra, Ashok

doi:10.1016/j.cplett.2006.10.088

Cited by 178 publications

(153 citation statements)

References 25 publications

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“…In addition, the use of imidazolium salts in controlling the dispersion of SWNT was also reported [124]. Kodgire et al [95] prepared for the first time CNT/PA6 composites through specific interactions between Na-AHA, which assisted debundling the MWNT and leading to homogeneous dispersion within matrix during melt-mixing. The composite fabricated by this route exhibited low electrical percolation threshold of 0.5 wt% at room temperature, the lowest reported value in this system so far.…”

Section: Dispersion Of Cnts Within Polymer Matrixmentioning

confidence: 99%

“…Meincke et al reported that percolation threshold of CNT/PA6 composite at CNT loading 4~6 wt%. Additional complexity arises in case of semi-crystalline matrices, where it is envisaged that the dispersion of CNT is significantly affected due to the crystallization induced phase separation and subsequent rejection of CNTs by the advancing crystalline fronts [95]. On the other hand, purity and defect concentration of CNTs, dispersion and alignment of CNTs within a matrix, are also the main factors influencing the electrical properties of CNT/polymer composites.…”

Section: Cnt/polymer Functional Composites 321 Electrical Propertimentioning

confidence: 99%

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The present status and key problems of carbon nanotube based polymer composites

Du¹,

Bai²,

Cheng³

2007

Express Polym. Lett.

418

250

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Abstract. The state-of-art and key problems of carbon nanotube (CNT) based polymer composites (CNT/polymer composites) including CNT/polymer structural composites and CNT/polymer functional composites are reviewed. Based on the results reported up to now, CNTs can be an effective reinforcement for polymer matrices, and the tensile strength and elastic modulus of CNT/polymer composites can reach as high as 3600 MPa and 80 GPa, respectively. CNT/polymer composites are also promising functional composite materials with improved electrical and thermal conductivity, etc. Due to their multi-functional properties, CNT/polymer composites are expected to be used as low weight structural materials, optical devices, thermal interface materials, electric components, electromagnetic absorption materials, etc. However, the full potential of CNT/polymer composites still remains to be realized. A few key problems, such as how to prepare structurecontrollable CNTs with high purity and consistently dependable high performance, how to break up entangled or bundled CNTs and then uniformly disperse and align them within a polymer matrix, how to improve the load transfer from matrix to CNT reinforcement, etc, still exist and need to be solved in order to realize the wide applications of these advanced composites.

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Section: Dispersion Of Cnts Within Polymer Matrixmentioning

confidence: 99%

Section: Cnt/polymer Functional Composites 321 Electrical Propertimentioning

confidence: 99%

The present status and key problems of carbon nanotube based polymer composites

Du¹,

Bai²,

Cheng³

2007

Express Polym. Lett.

418

250

View full text Add to dashboard Cite

show abstract

“…interaction using a sodium salt of 6-aminohexanoic acid (SAHA) as a modifier and MWCNT into the epoxy matrix. Though the modifier has been used for melt blending process by others [16], to our knowledge it has not been directly used for thermoset epoxy matrix. Studies on epoxy/MWCNT composites are reported to date are mostly related to high T g (glassy) epoxy systems [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, 'cation-!' interaction by using surfactant has been realized as the best way to achieve good dispersion of MWCNT and interfacial interaction [15][16][17][18]. The cation of such modifiers interacts with the !…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of rubbery epoxy/multiwall carbon nanotubes composites using amino acid salt assisted dispersion technique

Jagtap¹,

Ratna²

2013

Express Polym. Lett.

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Abstract. Epoxy/multiwall carbon nanotubes (MWCNT) composites were prepared using sodium salt of 6-aminohexanoic acid (SAHA) modified MWCNT and its effect properties of related composites were investigated. The composite prepared using a polar solvent, tetrahydrofuran exhibits better mechanical properties compared to those prepared using less polar solvent and without using solvent. The tensile properties and dynamic storage modulus was found to be increased as a result of modification of MWCNT with SAHA. This improvement in the tensile properties and dynamic mechanical properties of epoxy/MWCNT composite is a combined effect of cation-! interaction and chemical bonding. Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy were used to explain cation-! interaction between SAHA with MWCNT and chemical bonding of SAHA with epoxy resin. The effect of modification of MWCNT on morphology of a nanocomposite was confirmed by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The present approach does not disturb the ! electron clouds of MWCNT as opposed to chemical functionalization strategy.

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“…Great number of twin-screw extrusion of major engineering polymer-based nanocomposites exists. High impact polystyrene (HIPS), [63] polypropylene (PP), [64][65][66][67][68][69][70][71] acrylonitrile-butadiene-styrene terpolymer (ABS), [8,[71][72][73][74] polyamide 6 (PA6) [75][76][77][78][79][80][81][82] or polycarbonates (PC) [5,56,[83][84][85][86] and polyurethanes (PUR) [87][88][89] are already widely investigated.…”

Section: Compounding Of Nanocompositesmentioning

confidence: 99%

Nanocomposites of Multiphase Polymer Blend Reinforced with Carbon Nanotubes: Processing and Characterization

Wegrzyn¹

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Control of multiwall carbon nanotubes dispersion in polyamide6 matrix: An assessment through electrical conductivity

Cited by 178 publications

References 25 publications

The present status and key problems of carbon nanotube based polymer composites

The present status and key problems of carbon nanotube based polymer composites

Preparation and characterization of rubbery epoxy/multiwall carbon nanotubes composites using amino acid salt assisted dispersion technique

Nanocomposites of Multiphase Polymer Blend Reinforced with Carbon Nanotubes: Processing and Characterization

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