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Incorporation of Functionalized Multiwall Carbon Nanotubes into a Polyurethane Matrix
Joint Authors
Bredol, Michael
Michálek, Martin
Source
Advances in Materials Science and Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-08-04
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Functionalized and raw multiwall carbon nanotubes (MWCNTs) were investigated colloid-chemically in order to study the role of polar versus nonpolar interaction with a polyurethane (PU) matrix.
Both kinds of MWCNTs were dispersed by ultrasonication in the presence of a surfactant (sodium dodecyl sulphate) in aqueous solution.
Functional groups on the nanotube surface were characterized by infrared spectroscopy and by the ζ-potential in aqueous suspension.
Such suspensions were added to waterborne PU dispersions, drop-cast on glass substrates and cured.
The percolation threshold for electrical conductivity with polar (functionalized) MWCNTs was reached at 0.24 wt.%, whereas at concentrations as high as 2 wt.%, PU films with nonpolar MWCNTs stayed below the percolation threshold.
With an addition of 0.4 wt.% polar MWCNTs, the electrical conductivity increased to >10−6 S/cm in the cured coating layer.
These results are interpreted with respect to the chemical nature of the PU matrix.
American Psychological Association (APA)
Michálek, Martin& Bredol, Michael. 2013. Incorporation of Functionalized Multiwall Carbon Nanotubes into a Polyurethane Matrix. Advances in Materials Science and Engineering،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-509023
Modern Language Association (MLA)
Michálek, Martin& Bredol, Michael. Incorporation of Functionalized Multiwall Carbon Nanotubes into a Polyurethane Matrix. Advances in Materials Science and Engineering No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-509023
American Medical Association (AMA)
Michálek, Martin& Bredol, Michael. Incorporation of Functionalized Multiwall Carbon Nanotubes into a Polyurethane Matrix. Advances in Materials Science and Engineering. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-509023
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-509023