Table 1.

Properties of R-BAPB and commercially available polyimides used in membrane gas separation.

	R-BAPB	Kapton [13]	ULTEM [20]	Upilex-R [13]	Matrimid 5218 [15]	P84 [18]	6FDA-Durene [19]	PBI [16]
Tg, K	485	693	488	543	583	573	697	690
ρ, kg/m3	1324	1395	1280–1300	1366	1.172	1336	1333	1311
FFV,%	13.9	12.9	10.8–11.5	12.1	26.8	20.3	18.0	11.6