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Table 6 EDX data for PEI membranes prepared from NMP and GBL

From: Preparation of polyetherimide membrane from non-toxic solvents for the separation of hydrogen from methane

Sample

PEI wt%

Carbon wt%

Oxygen wt%

NMP-23

23

84.8

15.2

NMP-27

27

84.9

15.1

GBL-23

23

84.9

15.1

GBL-27

27

84.6

15.4