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Synthesis of homo- and multiblock copolymers of norbornene (N) and COAc.
| Polymers, P | Cat | [PN]/[PCOAc], wt/wt | Time, h | Yield, % | Mw·10−3 | Ð | Tg, °C | L N | L COAc |
|---|---|---|---|---|---|---|---|---|---|
| PN 1 | G1 | - | 1 | 98 | 424 | 2.0 | 39 | - | - |
| PCOAc 2 | G2 | - | 24 | 88 | 417 | 1.9 | −37 | - | - |
| (N–COAc)C1 3 | G2 | 2:1 | 3.5 | 93 | 289 | 1.7 | −1 | 10 | 3 |
| (N–COAc)C2 4 | G1 | 1:2 | 24 | 80 | 144 | 2.0 | −29 | 24 | 21 |
CHCl3, 25 °C; 1 [N] = 0.8 mol·L−1, [P]:[G1] = 700:1; 2 [COAc] = 4.5 mol·L−1, [P]:[G1] = 1000:1; 3 [P]:[G2] = 5000:1, [P] = 1 mol·L−1; 4 [P]:[G1] = 300:1.
