Graphene IoNanofluids, Thermal and Structural Characterization
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Methods
3. Results
3.1. TGA
3.2. Phase Change Characterization
3.3. Isobaric Heat Capacity
3.4. Degree of Subcooling
3.5. Viscoelastic Measurements
Oscillatory Rheology
- (1)
- Strain Sweep
- (2)
- Frequency Sweep
- (3)
- Graphene Percolation
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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[C2C1py][C4F9SO3] | XGNP/ [C2C1py][C4F9SO3] 1 wt% | XGNP/ [C2C1py][C4F9SO3] 5 wt% | XGNP/ [C2C1py][C4F9SO3] 10 wt% | |
---|---|---|---|---|
TONSET | 685 K | 684 K | 688 K | 686 K |
MAXIMUM PEAK T | 710 K | 713 K | 705 K | 712 K |
[C2C1py][C4F9SO3] | 1 wt% | 5 wt% | 10 wt% | |
---|---|---|---|---|
T (K) | cp (J·g−1·K−1) | cp (J·g−1·K−1) | cp (J·g−1·K−1) | cp (J·g−1·K−1) |
293 | 1.296 | 1.321 | 1.359 | 1.401 |
313 | 1.334 | 1.360 | 1.403 | 1.446 |
333 | 1.367 | 1.391 | 1.442 | 1.482 |
353 | 1.397 | 1.421 | 1.472 | 1.511 |
Concentration, wt% | TCrys (K) | Tm (K) | ΔHm (J · g−1) | ΔHCrys(J·g−1) |
---|---|---|---|---|
[C2C1py][C4F9SO3] | 250 | 278 | 38.14 | 34.76 |
1 wt% xGnP/[C2C1py][C4F9SO3] | 268 | 280 | 41.33 | 40.45 |
5 wt% xGnP/[C2C1py][C4F9SO3] | 258 | 277 | 41.16 | 39.47 |
10 wt% xGnP/[C2C1py][C4F9SO3] | 255 | 274 | 40.18 | 39.66 |
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Hermida-Merino, C.; Pereiro, A.B.; Araújo, J.M.M.; Gracia-Fernández, C.; Vallejo, J.P.; Lugo, L.; Piñeiro, M.M. Graphene IoNanofluids, Thermal and Structural Characterization. Nanomaterials 2019, 9, 1549. https://doi.org/10.3390/nano9111549
Hermida-Merino C, Pereiro AB, Araújo JMM, Gracia-Fernández C, Vallejo JP, Lugo L, Piñeiro MM. Graphene IoNanofluids, Thermal and Structural Characterization. Nanomaterials. 2019; 9(11):1549. https://doi.org/10.3390/nano9111549
Chicago/Turabian StyleHermida-Merino, C., A.B. Pereiro, J.M.M. Araújo, C. Gracia-Fernández, Javier P. Vallejo, Luis Lugo, and M.M. Piñeiro. 2019. "Graphene IoNanofluids, Thermal and Structural Characterization" Nanomaterials 9, no. 11: 1549. https://doi.org/10.3390/nano9111549