Summary of activation energy (Ea), Arrhenius pre-exponential factor (A), and apparent polymerization rate constant at 150 °C (kapp, 150 °C) estimated from Borchardt and Daniels (B/D) approach using various initiators/initiating systems at heating rates of 5, 10, 15, and 20 °C min−1.
| Initiators/initiating systems | Heating rate, β (°C min−1) | Kinetic parameters | ||
|---|---|---|---|---|
| E a a (kJ mol−1) | A b (min−1) | k app, 150 °C c (min−1) | ||
| Sn(Oct)2 | 5 | 79 | 5.42 × 1010 | 0.3150 |
| 10 | 89 | 2.35 × 109 | 0.3162 | |
| 15 | 89 | 1.49 × 109 | 0.3747 | |
| 20 | 91 | 6.32 × 108 | 0.4163 | |
| Liquid Sn(OnC4H9)2 | 5 | 76 | 3.40 × 1010 | 0.5057 |
| 10 | 78 | 2.65 × 1010 | 0.5742 | |
| 15 | 80 | 2.19 × 1010 | 0.6729 | |
| 20 | 84 | 2.87 × 1010 | 0.7696 | |
| Sn(Oct)2/nC4H9OH | 5 | 78 | 7.82 × 109 | 0.4230 |
| 10 | 84 | 2.59 × 1010 | 0.4322 | |
| 15 | 87 | 3.05 × 1010 | 0.4346 | |
| 20 | 88 | 2.57 × 1010 | 0.4936 | |
| Liquid Sn(OnC6H13)2 | 5 | 80 | 2.63 × 1011 | 0.2323 |
| 10 | 87 | 3.40 × 1011 | 0.2352 | |
| 15 | 87 | 2.19 × 1011 | 0.2458 | |
| 20 | 87 | 2.07 × 1011 | 0.2773 | |
| Sn(Oct)2/nC6H13OH | 5 | 89 | 3.64 × 1011 | 0.1710 |
| 10 | 90 | 3.79 × 1011 | 0.1722 | |
| 15 | 92 | 4.63 × 1011 | 0.1975 | |
| 20 | 94 | 1.13 × 109 | 0.2172 | |
| Liquid Sn(OnC8H17)2 | 5 | 90 | 3.52 × 1011 | 0.1446 |
| 10 | 91 | 4.36 × 109 | 0.1475 | |
| 15 | 96 | 9.56 × 109 | 0.1617 | |
| 20 | 97 | 9.48 × 109 | 0.1639 | |
| Sn(Oct)2/nC8H17OH | 5 | 97 | 7.66 × 108 | 0.0372 |
| 10 | 98 | 3.44 × 109 | 0.0943 | |
| 15 | 98 | 7.84 × 1010 | 0.1077 | |
| 20 | 100 | 1.27 × 1010 | 0.1082 | |
B/D: multiple linear regression of eqn (12), −Ea/R = slope.
ln (A) = intercept.
k app = apparent rate constant at 150 °C = dα/dt/(1 − α)n.