Sample | Particle size (μm) | Optical density of 778 cm−1 peak | Optical density of 695 cm−1 peak | Crystallinity index | Extinction coefficient (K) |
G-1 | <45 | 0.571 | 0.544 | 1.049 | 89.69 |
G-2 | 45 - 63 | 0.566 | 0.543 | 1.041 | 88.85 |
G-3 | 63 - 90 | 0.560 | 0.540 | 1.036 | 87.98 |
G-4 | >90 | 0.557 | 0.543 | 1.026 | 87.53 |
K-1 | <45 | 0.628 | 0.550 | 1.142 | 98.69 |
K-2 | 45 - 63 | 0.601 | 0.537 | 1.119 | 94.41 |
K-3 | 63 - 90 | 0.590 | 0.553 | 1.066 | 92.68 |
K-4 | >90 | 0.582 | 0.561 | 1.038 | 91.46 |