Table 7.
Effect of the Toluene/n-Heptane diluent composition on bead properties*.
| Run | H00 | H20 | H40 | H60 | H80 | H100 |
|---|---|---|---|---|---|---|
| Diluent composition (Tol./Hep), wt.% | 100/0 | 80/20 | 60/40 | 40/60 | 20/80 | |
| Yield, % | 58.5 | 60.75 | 64.7 | 59.6 | 58.78 | 56.5 |
| Bead size distribution, wt% | ||||||
| ≤ 0. mm, ≥ 80 mesh | 55.05 | 30.02 | 15.6 | 27.02 | 41.78 | 47.1 |
| 0.177–0.297 mm, 80 mesh | 25.41 | 59.66 | 78.12 | 61.08 | 50 | 28.26 |
| 0.297–0.707 mm, 50 mesh | 9.7 | 6.20 | 3.1 | 5.28 | 3.4 | 12.3 |
| ≥ 0.707mm, 25 mesh | 9.7 | 4.09 | 3.1 | 5.9 | 4.79 | 12.3 |
| Average bead size, mm | 0.275 | 0.255 | 0.25 | 0.26 | 0.243 | 0.29 |
| % Swelling | 65.20 | 67.12 | 76.20 | 64.40 | 55.40 | 50.10 |
| Glass transition temperature, °C | 107 | 107 | 109 | 108 | 109 | 109 |
| Surface area, m2/g | 18.445 | 24.246 | 31.24 | 38.214 | 43.21 | 45.20 |
| Pore volume, cm3/g | 0.102 | 0.115 | 0.155 | 0.162 | 0.172 | 0.218 |
*DVB concentration = 8 wt.%; Guar gum concentration, 2 wt.%