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. 2017 Jun 5;7(2):28. doi: 10.3390/membranes7020028

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.