Dispersion, agglomeration, and network formation of multiwalled carbon nanotubes in polycarbonate melts

Pegel, Sven; Pötschke, Petra; Petzold, Gudrun; Alig, Ingo; Dudkin, S. M.; Lellinger, Dirk

doi:10.1016/j.polymer.2007.12.024

Cited by 352 publications

(238 citation statements)

References 30 publications

(24 reference statements)

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“…In addition to nanotubes, the crystallization kinetics and mechanical properties have been reported to be influenced by many factors such as processing technique employed, shear flow, temperature, mixing time, rotational speed, cooling rate, etc. [10,11].…”

Section: Introductionmentioning

confidence: 99%

Polyamide 6/Multiwalled Carbon Nanotubes Nanocomposites with Modified Morphology and Thermal Properties

et al. 2013

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Pure polyamide 6 (PA6) and polyamide 6/carbon nanotube (PA6/CNT) composite samples with 0.5 weight percent loading of pristine or functionalized CNTs were made using a solution mixing technique. Modification of nanotube surface as a result of chemical functionalization was confirmed through the presence of lattice defects as examined under high-resolution transmission electron microscope and absorption bands characteristic of carboxylic, sulfonic and amine chemical groups. Microstructural examination of the cryogenically fractured surfaces revealed qualitative information regarding CNT dispersion within PA6 matrix and interfacial strength. X-ray diffraction studies indicated formation of thermodynamically more stable α-phase crystals. Thermogravimetric analysis revealed that CNT incorporation delayed onset of thermal degradation by as much as 70 °C in case of amine-functionalized CNTs, thus increasing thermal stability of the composites. Furthermore, addition of amine-functionalized CNTs caused an increase in crystallization and melting temperatures from the respective values of 177 and 213 °C (for neat PA6) to 211 and 230 °C (for composite), respectively.

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Section: Introductionmentioning

confidence: 99%

Polyamide 6/Multiwalled Carbon Nanotubes Nanocomposites with Modified Morphology and Thermal Properties

et al. 2013

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“…Foaming can also effectively disturb the in-plane orientation of fiber and decrease the size of the skin layer that has highly oriented fibers and thus enhance the through-plane conductivity [19,20,23]. Moreover, gas can also prevent fiber aggregation and improve the dispersion [23] and distribution [19,20] of the fibers, which is helpful in lowering the electrical percolation threshold [24,25]. Therefore, inducing a cellular structure can resolve the shortcomings of injection-molded CPCs, while resulting in lightweight products.…”

Section: Introductionmentioning

confidence: 99%

Foam injection molding of polypropylene/stainless steel fiber composites for efficient EMI shielding

Ameli¹,

Nofar²,

Wang³

et al. 2016

AIP Conference Proceedings

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“…Features of CNTs such as excellent mechanical properties, electrical and thermal conductivity associated with their high aspect ratio and low density, have several potential benefits which are expected to manifest when they are employed as fillers in polymers [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Visualization of the conductive paths in injection moulded MWNT/polycarbonate nanocomposites by conductive AFM

Kiss-Pataki

Tiusanen

Dobrik

et al. 2014

Composites Science and Technology

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Electrical conductivity of MWNT filled polymer composites can strongly depend on the dispersion of the filler. Injection moulding of the same nanotube filled conductive composite materials can lead to significant differences in conductivities while the corresponding morphological changes seem to be moderate. Here we report on a conductive atomic microscopy (C-AFM) study of a series of polycarbonate/MWNT settings injection moulded with different injection speeds and melt temperatures, completed with optical microscopy, SEM and TEM characterization. C-AFM was found to be able to visualize the significant differences in the morphology of electrical pathways in cross section. These morphological variations seem to correlate to the differing volume resistivity data and are in agreement with the expected structural effects of injection moulding processes with different parameters.

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Dispersion, agglomeration, and network formation of multiwalled carbon nanotubes in polycarbonate melts

Cited by 352 publications

References 30 publications

Polyamide 6/Multiwalled Carbon Nanotubes Nanocomposites with Modified Morphology and Thermal Properties

Polyamide 6/Multiwalled Carbon Nanotubes Nanocomposites with Modified Morphology and Thermal Properties

Foam injection molding of polypropylene/stainless steel fiber composites for efficient EMI shielding

Visualization of the conductive paths in injection moulded MWNT/polycarbonate nanocomposites by conductive AFM

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