Table 2.

Comparison of rubber-derived TR membrane with other reports with respect to hydrogen permeability and H₂/CO₂ selectivity.

Polymer	Thermal Rearrangement Protocols	Permeability (Barrer) *		H2/CO2 Selectivity	Reference
		H2	CO2
6FDA-HAB5DAM5	450 °C for 1 h	1318	1607	0.82	[32]
HAB-6FDA	450 °C for 1 h	530	410	1.29	[33]
Aromatic Polyimides	450 °C for 1 h	738	295	2.50	[9]
Poly(benzoxazole-co-imide)	400 °C for 2 h	222.1	172.8	1.29	[10]
Polybenzimidazole (PBI)	450 °C for 1 h	1779	1624	1.1	[34]
PANI/PBI	300 °C for 3 h	3.69	0.242	15.2	[35]
C7-P2.8-T250	250 °C for 2 h	1333	333.25	4.0	This work

*: Barrer = 1 × 10⁻¹⁰ cm³(STP)cm·cm⁻² s⁻¹ cmHg; the C7-P2.8-T250 membrane thickness is 1.116 μm.