Table 4.
PEO content by 1H-NMR and TGA, molecular weight of film forming polymers by SEC and MALS detection, and measured crystallinity of multiblock copolymers PIM(X)-b-PEG(Y) from DSC.
| Multiblock Copolymer a,b) | Intended PEO Content wt % | PEO Content (1H-NMR) wt % | PEO Content (TGA) wt % | Mw (MALS) kg/mol | PDI | Calc. Crystallinity (DSC) % |
|---|---|---|---|---|---|---|
| PIM(10)-b-PEO(0.2) | 2 | 2.5 | 2.5 | n.m. | 0.06 | |
| PIM(10)-b-PEO(1) | 9 | 10.8 | 9.3 | 67 | 1.3 | 0.7 |
| PIM(10)-b-PEO(2) | 16 | n.m. | 18 | 41 | 2.1 | n.m. |
| PIM(25)-b-PEO(0.2) | 1 | 1.2 | 1.6 | 57 | 1.1 | 0.08 |
| PIM(25)-b-PEO(1) | 4 | 3.6 | 4.1 | 43 | 1.3 | 0.11 |
| PIM(25)-b-PEO(2) | 7 | 7 | 7.5 | 44 | 1.1 | 0.14 |
a) Mw of PIM-1 was roughly estimated by reaction time and excess of TFTDN (see Figure 5); b) Mw of PEG as given by deliverer.