Synthesis of Polyimides Containing Benzimidazole Groups in Side Chains for Natural Gas Separation DOI
Xiaohua Tong,

Guangran Shao,

Ming Yuan

et al.

Macromolecules, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

Polyimides for natural gas separation are synthesized from copolycondensation of 5-(1H-benzimidazol-2-yl)benzene-1,3-diamine (BIB) with 2,3,5,6-tetramethyl-1,4-phenylenediamine (Durene) and 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) different 6FDA/BIB/Durene ratios. All polyimides containing benzimidazole groups in side chains display good processability, outstanding thermal stability, excellent mechanical properties. The CO2 permeability CO2/CH4 selectivity the change ratio or BIB content. At a total pressure 2 bar feed 50:50, polyimide 30% content (F10B3D7) exhibits high 197.2 Barrer coupled 38.6, which is close to 2008 Robeson's upper bound. Besides, CO2-induced plasticization physical aging membranes can also be regulated by tuning ratio. Specifically, F10B3D7 resistance stability against aging, it demonstrated promising candidate purification biogas removal molecules gas.

Language: Английский

In Situ Formation of Tröger’s Base-Derived Porous Organic Polymer Membranes with Greatly Enhanced Ultramicroporosity and Gas Separation Property DOI
Mengtao Wang,

Luxin Sun,

Chen Luo

et al.

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Language: Английский

Citations

2
Eco-friendly non-fluorinated membranes for renewable energy storage DOI
Mahmoud M. Gomaa, Iñaki Requena, Mohamed R. El-Sharkawy

et al.

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 90, P. 328 - 341

Published: Oct. 5, 2024

Language: Английский

Citations

2
The influence of diamine structure on low dielectric constant and comprehensive properties of fluorinated polyimide films DOI
Haiyang Dai, Yang Zhang, Yang Yang

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: unknown, P. 113614 - 113614

Published: Nov. 1, 2024

Language: Английский

Citations

1
Preparation and characterization of HEMA-co-VAm/PDA@GO/PSf membrane with enhanced CO2 separation DOI
Beibei Zhang, Lihua Zhang, Jin Li

et al.

Polymer Bulletin, Journal Year: 2024, Volume and Issue: 81(13), P. 11459 - 11479

Published: April 14, 2024

Language: Английский

Citations

0
Synthesis of Polyimides Containing Benzimidazole Groups in Side Chains for Natural Gas Separation DOI
Xiaohua Tong,

Guangran Shao,

Ming Yuan

et al.

Macromolecules, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

Polyimides for natural gas separation are synthesized from copolycondensation of 5-(1H-benzimidazol-2-yl)benzene-1,3-diamine (BIB) with 2,3,5,6-tetramethyl-1,4-phenylenediamine (Durene) and 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) different 6FDA/BIB/Durene ratios. All polyimides containing benzimidazole groups in side chains display good processability, outstanding thermal stability, excellent mechanical properties. The CO2 permeability CO2/CH4 selectivity the change ratio or BIB content. At a total pressure 2 bar feed 50:50, polyimide 30% content (F10B3D7) exhibits high 197.2 Barrer coupled 38.6, which is close to 2008 Robeson's upper bound. Besides, CO2-induced plasticization physical aging membranes can also be regulated by tuning ratio. Specifically, F10B3D7 resistance stability against aging, it demonstrated promising candidate purification biogas removal molecules gas.

Language: Английский

Citations

0