Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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Materials Map under construction

The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (2/2 displayed)

  • 2012Methods to characterize the dispersability of carbon nanotubes and their length distributioncitations
  • 2011Influence of dry grinding in a ball mill on the length of multiwalled carbon nanotubes and their dispersion and percolation behaviour in melt mixed polycarbonate composites135citations

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Chart of shared publication
Boldt, Regine
2 / 19 shared
Krause, Beate
2 / 89 shared
Pötschke, Petra
2 / 330 shared
Petzold, Gudrun
2 / 3 shared
Villmow, Tobias
1 / 7 shared
Chart of publication period
2012
2011

Co-Authors (by relevance)

  • Boldt, Regine
  • Krause, Beate
  • Pötschke, Petra
  • Petzold, Gudrun
  • Villmow, Tobias
OrganizationsLocationPeople

article

Influence of dry grinding in a ball mill on the length of multiwalled carbon nanotubes and their dispersion and percolation behaviour in melt mixed polycarbonate composites

  • Boldt, Regine
  • Krause, Beate
  • Mende, Mandy
  • Villmow, Tobias
  • Pötschke, Petra
  • Petzold, Gudrun
Abstract

International audience ; Ball milling of carbon nanotubes (CNTs) in the dry state is a common way to produce tailored CNT materials for composite applications, especially to adjust nanotube lengths. For Nanocyl NC7000 nanotube material before and after milling for 5 and 10 hours the length distributions were quantified using TEM analysis, showing decreases of the mean length to 54 and 35%, respectively. With increasing ball milling time in addition a decrease of agglomerate size and an increase of packing density took place resulting in a worse dispersability in aqueous surfactant solutions. In melt mixed CNT polycarbonate composites produced using masterbatch dilution step the electrical properties, the nanotube length distribution after processing, and the nano- and macrodispersion of the nanotubes were studied. The slight increase in the electrical percolation threshold in the melt mixed composites with ball milling time of CNTs can be assigned to lower nanotubes lengths as well as the worse dispersability of the ball milled nanotubes. After melt compounding, the mean CNT lengths were shortened to 31%, 50%, and 66% of the initial lengths of NC7000, NC7000-5h, and NC7000-10h, respectively.

Topics
  • density
  • impedance spectroscopy
  • dispersion
  • polymer
  • Carbon
  • nanotube
  • melt
  • grinding
  • milling
  • composite
  • transmission electron microscopy
  • ball milling
  • ball milling
  • surfactant
  • polymer-matrix composite