Table 1.
Characterization of copolymers.
| [M]/[CTA]/[I] | Feed Ratio (%) | Conversion a (%) | Calculated Ratio b (%) | Mn theo c | Mn d | Mw d | PDI d | |
|---|---|---|---|---|---|---|---|---|
| PA1 | 50:1:0.2 | 47:3 e | 87.1 | 41:2.3 e | 5444 | 4956 | 5642 | 1.14 |
| PA2 | 50:1:0.2 | 45:5 e | 84.7 | 38:4.7 e | 5562 | 4683 | 5481 | 1.17 |
| PA3 | 100:1:0.2 | 90:10 e | 89.2 | 81:8.0 e | 11,058 | 11,435 | 13,144 | 1.22 |
| PAD1 | 50:1:0.2 | 47:3 f | 89.9 | 37:2.1 f | 9986 | 12,548 | 16,688 | 1.33 |
| PAD2 | 50:1:0.2 | 45:5 f | 94.0 | 39:4.1 f | 10,688 | 13,563 | 17,360 | 1.28 |
| PAD3 | 100:1:0.2 | 90:10 f | 91.6 | 73:7.0 f | 21,568 | 26,500 | 35,856 | 1.35 |
| PD1 | 50:1:0.2 | 47:3 g | 90.5 | 40:2.6 g | 5331 | 5852 | 6633 | 1.13 |
| PD2 | 50:1:0.2 | 45:5 g | 87.4 | 38:4.2 g | 5375 | 5158 | 5874 | 1.14 |
| PD3 | 100:1:0.2 | 89:10 g | 87.0 | 76:7.4 g | 10,217 | 10,311 | 12,579 | 1.19 |
a Calculated from gravimetric analysis. b Calculated from 1H NMR spectroscopy and monomer conversion. c Calculated from 1H NMR spectroscopy and monomer conversion. d Obtained by GPC measurements. e Molar ratios of NIPAM to AAPBA in PA. f Molar ratios of NIPAM to DAA in second segment of PAD. g Molar ratios of NIPAM to DAA in PD.