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Inter-relationship between tribo-electric charge and surface adhesion (n = 3).
| Powder mixtures | Correlation co-efficient (R2) | |
|---|---|---|
| Particle size (90–150 μm) | Particle size (150–250 μm) | |
| A4M/THP | 0.750 | 0.947 |
| F4M/THP | 0.880 | 0.992 |
| E4M/THP | 0.917 | 0.967 |
| K4M/THP | 0.982 | 0.930 |
| K15M/THP | 0.975 | 0.938 |
| K100M/THP | 0.899 | 0.963 |
