Table 1.
Effects of organic solvents on monomer conversion and product molecular weight Mn. The reactions were conducted using 200 μL δ-valerolactone and 600 μL toluene at 70 °C for 72 h in different organic solvents.
| Solvent | Log P | Monomer conversion (%) | Mn (g/mol) | PDI |
|---|---|---|---|---|
| 1,4-Dioxane | −1.10 | 86 | 860 | 1.09 |
| Acetone | −0.23 | 87 | 850 | 1.12 |
| Tetrahydrofuran | 0.49 | 93 | 910 | 1.10 |
| Dichloromethane | 0.93 | 72 | 860 | 1.14 |
| Chloroform | 2.00 | 91 | 960 | 1.15 |
| Toluene | 2.50 | 97 | 2225 | 1.37 |
| Cyclohexane | 3.09 | 100 | 1860 | 1.28 |
| n-Hexane | 3.50 | 100 | 1970 | 1.29 |
| Solvent-free | - | 94 | 1620 | 1.26 |