Table 2.
Thermal characteristic parameters determined by DSC and TGA of the synthesized copolymers. Glass transition temperature, Tg; initial degradation temperature, Tdonset; temperature of the maximum rate of weight loss for each step, Tdmax; and the rate of weight loss for each step, −dw/dT.
| FMTA | Tg (°C) |
Tdonset (°C) |
Tdmax1 (°C) |
−dw1/dT (%/°C) |
Tdmax2 (°C) |
−dw2/dT (%/°C) |
Tdmax3 (°C) |
−dw3/dT (%/°C) |
|---|---|---|---|---|---|---|---|---|
| P(MTA-co-HEMA) | ||||||||
| 0.00 | 96 | 259.0 | 178.5 | 0.03 | - | - | 400.0 | 0.99 |
| 0.18 | 94 | 288.0 | 175.0 | 0.03 | 328.5 | 0.45 | 441.5 | 1.26 |
| 0.37 | 92 | 300.5 | 100.0 | 0.02 | 327.5 | 0.62 | 432.5 | 1.17 |
| 0.56 | 75 | 301.0 | - | - | 341.0 | 0.74 | 435.0 | 0.91 |
| 0.76 | 70 | 294.0 | - | - | 350.0 | 0.98 | 426.0 | 0.65 |
| 1.00 | 49 | 300.0 | - | - | 366.5 | 1.08 | 413.5 | 0.34 |
| P(MTAMeI-co-HEMA) | ||||||||
| 0.00 | 96 | 259.0 | 178.5 | 0.03 | - | - | 400.0 | 0.99 |
| 0.18 | 109 | 185.0 | 237.5 | 0.18 | - | - | 420.5 | 1.05 |
| 0.37 | 126 | 186.5 | 228.5 | 0.39 | - | - | 404.0 | 0.71 |
| 0.56 | 133 | 196.5 | 220.5 | 0.75 | 320.0 | 0.38 | 429.5 | 0.71 |
| 0.76 | 145 | 205.5 | 228.5 | 0.89 | 329.5 | 0.37 | 422.0 | 0.52 |
| 1.00 | 157 | 209.5 | 235.5 | 1.12 | 341.5 | 0.41 | 421.5 | 0.36 |
| P(MTABuI-co-HEMA) | ||||||||
| 0.00 | 96 | 259.0 | 178.5 | 0.03 | - | - | 400.0 | 0.99 |
| 0.18 | 112 | 220.0 | 250.5 | 0.37 | - | - | 433.5 | 1.32 |
| 0.37 | 114 | 225.0 | 247.5 | 0.96 | - | - | 432.0 | 0.89 |
| 0.56 | 121 | 222.0 | 242.5 | 1.20 | - | - | 426.0 | 0.73 |
| 0.76 | 113 | 221.0 | 244.5 | 1.43 | - | - | 419.0 | 0.55 |
| 1.00 | 117 | 229.0 | 251.0 | 1.80 | - | - | 418.0 | 0.36 |