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Abstract
Here is presented a systematic study of the dispersibility of multiwall
carbon nanotubes (MWCNTs) in natural rubber latex (NR-latex) assisted by
a series of single-, double-, and triple-sulfosuccinate anionic
surfactants containing phenyl ring moieties. Optical polarising
microscopy, field emission scanning electron microscopy (FESEM),
transmission electron microscopy (TEM), and Raman spectroscopy have been
performed to obtain the dispersion-level profiles of the MWCNTs in the
nanocomposites. Interestingly, a triple-chain, phenyl-containing
surfactant, namely sodium
1,5-dioxo-1,5-bis(3-phenylpropoxy)-3-((3-phenylpropoxy)carbonyl)
pentane-2-sulfonate (TCPh), has a greater capacity the stabilisation of
MWCNTs than a commercially available single-chain sodium
dodecylbenzenesulfonate (SDBS) surfactant. TCPh provides significant
enhancements in the electrical conductivity of nanocomposites, up to ∼10−2 S cm−1,
as measured by a four-point probe instrument. These results have
allowed compilation of a road map for the design of surfactant
architectures capable of providing the homogeneous dispersion of MWCNTs
required for the next generation of polymer–carbon-nanotube materials,
specifically those used in aerospace technology.
Original language | English |
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Pages (from-to) | 179-187 |
Number of pages | 9 |
Journal | Journal of Colloid and Interface Science |
Volume | 455 |
Early online date | 4 Jun 2015 |
DOIs | |
Publication status | Published - 1 Oct 2015 |
Keywords
- Multiwall carbon nanotubes (MWCNTs)
- Natural rubber latex (NR-latex)
- Surfactant
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New low surface energy materials
Eastoe, J. (Principal Investigator)
7/01/13 → 7/01/16
Project: Research