Structure and crystallization behavior of Nylon 66/multi-walled carbon nanotube nanocomposites at low carbon nanotube contents

Li, Lingyu; Li, Christopher Y.; Ni, Chaoying; Rong, Lijian; Hsiao, Benjamin S.

doi:10.1016/j.polymer.2007.04.030

Cited by 305 publications

(245 citation statements)

References 52 publications

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“…This is due to the rapid rate of polymer precipitation and partial nucleation/growth of the polymer away from the CNF surface, as was also observed by Zhang et al 24 during precipitation of PEG in the presence of CNTs (using supercritical carbon dioxide as the antisolvent). Li et al 23 obtained similar heterostructures (CNF in core and polymer crystals grown on its surface) during solution crystallization of nylon-6,6 in the presence of CNFs. Similar structures have been obtained during precipitation of approximately 1.5 wt % PHA solution containing around 30 wt % MWNTs when water was used as an antisolvent.…”

mentioning

confidence: 85%

“…18 Such deterioration of properties are not anticipated when noncovalent functionalization methods including solution crystallization, precipitation, and physical vapor deposition are applied. [17][18][19][20] Reports of noncovalent functionalization methods used to create hybrid nanostructures of carbon nanotubes (CNTs) with polyethylene (PE), 21,22 nylon-6,6, 23 and poly-(ethylene glycol) (PEG) 24 have been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

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Polymer crystallization and precipitation‐induced wrapping of carbon nanofibers with PBT

Mago

Kalyon

Fisher

2009

J of Applied Polymer Sci

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Carbon nanofibers (CNFs) have attracted significant interest because of their excellent mechanical, electrical, and physical properties. Recent advances in chemical functionalization strategies are anticipated to extend their utility in various applications. In this study, noncovalent methods of CNF functionalization utilizing solution crystallization and precipitation techniques were used to create hybrid nanostructures consisting of CNFs and poly(butylene terephthalate) (PBT). Key to this study is the finding that o-chlorophenol can be used as a suitable solvent to dissolve PBT to generate these nanostructures. PBT crystallization was documented via wideangle X-ray analysis and differential scanning calorimetry and was due to the nucleation effect of the CNFs. The sizes of the PBT crystals could be manipulated by altering the polymer concentration. The solution crystallization and precipitation techniques provide an alternative strategy to alter and control the nanostructure/polymer interface. The resulting nanohybrid structures may potentially find use in a broad range of applications including electronic devices, sensors, and as reinforcing agents in a polymer matrix.

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mentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Polymer crystallization and precipitation‐induced wrapping of carbon nanofibers with PBT

Mago

Kalyon

Fisher

2009

J of Applied Polymer Sci

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“…In certain circumstances, thermal energy alone is insufficient to surmount the potential energy barrier to aggregation and specific measures need to be taken. The application of low shear forces has already been shown to greatly enhance the migration of dispersed carbon nanotubes and the resulting network formation at loadings below 1.0% (w/w) in an epoxy matrix [55][56][57][58] . These results indicate that the processing conditions play a crucial role in achieving low percolation thresholds in epoxy systems.…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials

et al. 2013

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Nanostructured polymer composites have opened up new perspectives for multifunctional materials. In particular, carbon nanotubes (CNTs) present potential applications in order to improve mechanical and electrical performance in composites with aerospace application. The combination of epoxy resin with multiwalled carbon nanotubes results in a new functional material with enhanced electromagnetic properties. The objective of this work was the processing of radar absorbing materials based on formulations containing different quantities of carbon nanotubes in an epoxy resin matrix. To reach this objective the adequate concentration of CNTs in the resin matrix was determined. The processed structures were characterized by scanning electron microscopy, rheology, thermal and reflectivity in the frequency range of 8.2 to 12.4 GHz analyses. The microwave attenuation was up to 99.7%, using only 0.5% (w/w) of CNT, showing that these materials present advantages in performance associated with low additive concentrations.

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“…211 NHSKs grown in solution can then be used as fillers themselves for polymers crystallized in solution, which can lead to very unique morphologies. 212,213 Just as with polymeric shish-kebabs, the formation of NHSKs is not trivial and a great many variables (temperature, solvent quality, molecular weight) will control the exact type of morphology that results. Specifically, lower polymer concentrations and nanotubes with less defects favor the formation of NHSKs from solution.…”

Section: Semicrystalline Polymersmentioning

confidence: 99%

Effects of carbon nanotubes on polymer physics

Grady

2012

J Polym Sci B Polym Phys

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A single carbon nanotube has many similarities with an individual polymer chain including the fact that the end-to-end length of both are often about the same and the diameter of the chain is about the same (for single-walled nanotubes) or only $10 to 20 times larger (for multiwalled nanotubes). The combination of the solid surface and the similarity of the two materials means that polymer physics are altered in manners not seen with any other type of commonly used filler. The purpose of this review is to update a chapter that appears in a recent tome by Grady (2011) and describe how polymer physics is altered in composites that contain carbon nanotubes. Subjects that will be discussed include chain configuration, glass transition, polymer diffusion, unit cells and crystalline superstructure (lamellae, spherulites and shishkebabs), and crystallization kinetics. V C 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 2012

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Structure and crystallization behavior of Nylon 66/multi-walled carbon nanotube nanocomposites at low carbon nanotube contents

Cited by 305 publications

References 52 publications

Polymer crystallization and precipitation‐induced wrapping of carbon nanofibers with PBT

Polymer crystallization and precipitation‐induced wrapping of carbon nanofibers with PBT

Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials

Effects of carbon nanotubes on polymer physics

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