Abstract
This review paper explores the formation of carbon nanotube (CNT) polymer composites as a function of material and processing parameters. The effect of different polymer systems, increasing multiwall CNT content, modification of CNTs, processing conditions, and aspect ratio are discussed in detail for multi-walled carbon nanotubes (MWCNT) composites along with some examples for SWCNT composites. All of these factors influence the microstructure and how the network of CNTs forms within it. Often, researchers choose to modify the CNTs to aid in their distribution; however, this may result in a reduction or increase in conductivity depending on many factors. The electrical properties are directly affected by changes in the CNT network and how the material has been processed. As soon as the network forms, percolation occurs and the conductivity increases. In order to understand how to control the properties of CNT composites, all material characteristics and processing conditions must be taken into account.
Highlights
The electrical, mechanical, and thermal properties of a material can be greatly improved by the addition of carbon nanotubes (CNTs)
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There is a large gap between 8.5 and 10 wt% MWCNT for the dielectric constant, which indicates that the percolation threshold appears within that range [1]
Summary
The electrical, mechanical, and thermal properties of a material can be greatly improved by the addition of carbon nanotubes (CNTs). Understanding their influence within a composite is an important endeavor. They include mechanical mixing, melt mixing, and solution mixiadngigsgt.lroibmSuientrianctgeest.htTehhneeatnphoirtruodbcseteesspinsitisondtgihspememrseaiottrnhixoo[fd8a]g. Processing method used and characteristics of materials used are very important to the fabrication of MWCNT/polymer composites, their effects will be described in the discussion. The number and type of group depends on the method of oxidation. A second method to improve dispersion is using surfactants and coupling agents.
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