Table 1 Single gas (CO2, N2, and CH4) permeability and selectivity (CO2/N2, and CO2/CH4) of FS/PDMS membranes at 20 Psig pressure and at room temperature at different wt% of filler loading.

From: Polydimethylsiloxane based mixed matrix membranes with pretreated fumed silica for efficient CO2 separation

Membrane

Permeability of CO2 (Barrer)

Permeability of N2 (Barrer)

Permeability of CH4 (Barrer)

Selectivity of CO2/N2

Selectivity of CO2/CH4

Neat PDMS (0% FS)

2889

271

833

10.66

3.47

2.5% FS/PDMS

3005

269

844

11.17

3.56

5% FS/PDMS

3662

265

851

13.82

4.30

7.5% FS/PDMS

4105

262

849

15.67

4.84

10% FS/PDMS

4431

294

983

15.07

4.51