Table 1 Gas permeabilities and selectivities of uncrosslinked PIM-BM/TB and crosslinked XPIM-BM/TB.

From: Ultra-selective molecular-sieving gas separation membranes enabled by multi-covalent-crosslinking of microporous polymer blends

Polymer

P (Barrer)a

Selectivityb

H2

CO2

O2

N2

CH4

H2/CH4

CO2/CH4

O2/N2

CO2/N2

PIM-BM/TB

1925

2007

423

110

112

17.2

17.9

3.8

18.2

80 °C-20 h

1392

987

216

44

47

29.6

21.0

4.9

22.4

120 °C-20 h

839

618

150

33

31

27.1

19.9

4.5

18.7

200 °C-20 h

721

391

88

18

12

60.1

32.6

4.9

21.7

250 °C-5 h

582

431

104

25

16

36.4

26.9

4.2

17.2

250 °C-10 h

427

197

47

9

3.6

118.6

54.7

5.2

21.8

250 °C-20 h

356

149

33

4.4

1.8

197.7

82.7

7.5

33.9

300 °C-5 h

358

68

18

1.6

0.44

813.6

154.5

11.1

42.5

  1. aPermeability coefficients measured at 35 °C and 50 psi feed pressure. 1 Barrer = 10−10 [cm3 (STP) cm]/(cm2 s cmHg).
  2. bIdeal selectivity ɑ = (Pa)/(Pb).
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