Research Article
The Effect of H-Bonding on Radical Copolymerization of Maleic Anhydride with N-tert-Butylacrylamide and Its Characterization
Table 2
The effect on copolymerization of reaction conditions.
| Run | Feed mol ratio NTBA/MA | AIBN (% mol) | Temperature (°C) | Time (h) | (g/mol) | (g/dL) | PDI | Acid number (mg KOH/g) | N content (%) | Conversion (%) |
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1a | 70/30 | 1.0 | 65 | 24 | 2800 | 0.063 | 1.09 | 285 | 8.54 | 3.3 | 2a | 60/40 | 1.0 | 65 | 24 | 3100 | 0.069 | 1.10 | 305 | 8.01 | 4.9 | 3a | 50/50 | 1.0 | 65 | 24 | 3400 | 0.073 | 1.10 | 354 | 7.46 | 9.1 | 4a | 40/60 | 1.0 | 65 | 24 | 4000 | 0.081 | 1.11 | 378 | 6.87 | 14.6 | 5a | 30/70 | 1.0 | 65 | 24 | 6100 | 0.097 | 1.12 | 412 | 6.52 | 34.1 | 6a | 30/70 | 0.3 | 65 | 24 | 6300 | 0.098 | 1.15 | 381 | 0.76 | 4.3 | 7a | 30/70 | 0.7 | 65 | 24 | 6200 | 0.096 | 1.13 | 390 | 1.54 | 8.6 | 8a | 30/70 | 1.4 | 65 | 24 | 5000 | 0.092 | 1.12 | 378 | 6.85 | 38.8 | 9a | 30/70 | 1.0 | 65 | 6 | 4800 | 0.091 | 1.11 | 362 | 2.69 | 15.1 | 10a | 30/70 |
1.0 | 65 | 3 | 4500 | 0.087 | 1.12 | 344 | 1.47 | 8.3 | 11a | 30/70 | 1.0 | 80 | 24 | 6000 | 0.096 | 1.16 | 384 | 6.03 | 34.0 | 12a | 30/70 | 1.0 | 50 | 24 | 4800 | 0.092 | 1.11 | 372 | 3.56 | 20.8 | 13b | 30/70 | 1.0 | 65 | 3 | 4200 | 0.083 | 1.11 | 322 | 1.23 | 7.2 | 14b | 30/70 | 1.0 | 65 | 24 | 5900 | 0.095 | 1.11 | 378 | 4.17 | 24.4 |
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NTBA added in four portions. bNTBA added at once.
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