Organic Membranes for Selectivity Enhancement of Metal Oxide Gas Sensors

Table 7

Change of the absolute humidity in the permeate for the thermoplastic polycondensates PC, PEEK, PES, PET, PEN, PA6, PI, and PEI. The concentrations in the feed and permeate were measured with a digital /RH sensor (HYT221).

Membrane	Sensor	[g/m^3]	[g/m^3]	[g/m^3]	[g/m^3]
PC	HYT221	5	9,6	2,2	4,2
PEEK	HYT221	4,6	9	1,1	2,2
PES	HYT221	4,5	9	3,1	6
PET	HYT221	5,3	10,1	0,9	1,8
PEN	HYT221	4,8	9,7	0,1	0,2
PA6	HYT221	4,6	9,1	1,1	3,4
PI	HYT221	4,6	9,1	1,3	2,6
PEI	HYT221	4,6	9	1,3	2,7