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Multicomponent solubility parameters for single-walled carbon nanotube-solvent mixtures
Shane D Bergin1, Zhenyu Sun, David Rickard
1School of Physics, Trinity College Dublin, Dublin 2, Ireland.
We determined single-walled carbon nanotube dispersibility in solvents using Hansen solubility parameters. Successful solvents occupy a specific parameter range, with dispersibility sensitive to the dispersive component.
Area of Science:
- Materials Science
- Nanotechnology
- Physical Chemistry
Background:
- Solubility parameters are crucial for predicting solvent-material interactions.
- Understanding single-walled carbon nanotube (SWCNT) dispersibility is key for their application.
- Existing models may not fully capture SWCNT-solvent interactions.
Purpose of the Study:
- To quantify SWCNT dispersibility in various solvents.
- To correlate SWCNT dispersibility with Hansen solubility parameters.
- To investigate the fundamental nature of SWCNT-solvent interactions.
Main Methods:
- Measurement of SWCNT dispersibility in diverse solvents.
- Analysis of dispersibility against Hansen solubility parameters (HSP).
- Estimation of HSP for SWCNTs.
Main Results:
- SWCNT dispersibility reached up to 3.5 mg/mL.
- Effective solvents fall within a defined HSP range.
- Dispersibility is most sensitive to the dispersive HSP component.
- Estimated SWCNT HSP:
Conclusions:
- SWCNT dispersibility correlates with HSP, particularly the dispersive term.
- Hansen and Hildebrand parameters may not be fundamental for SWCNT-solvent interactions.
- Surface energy-based parameters show promise but do not fully explain solvent vs. nonsolvent behavior.
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