A Facile Synthesis of (PIM-Polyimide)-(6FDA-Durene-Polyimide) Copolymer as Novel Polymer Membranes for CO2 Separation
Abstract
:1. Introduction
2. Materials and Methods
2.1. Synthesis of [(PIM-PI)x-(6FDA-durene-PI)y] Copolymers (1) with Different PIM-PI Compositions
Synthesis of (PIM-PI)-(6FDA-Durene-PI)(1:4)
2.2. Membrane Preparation
2.3. Characterization Methods and Measurement of Gas Separation Performance of the Membranes
3. Results
3.1. Synthesis and Characterization of the [(PIM-PI)x-(6FDA-Durene-PI)y] Copolymers (1)
3.2. Preparation of the [(PIM-PI)x-(6FDA-Durene-PI)y] Copolymer Membranes
3.3. Morphological Analysis by XRD and AFM
3.4. Gas separation Performance of the Copolymer Membranes
3.5. Permeability vs Selectivity
3.6. Pressure Effect on Permeability
3.7. Thermal and Mechanical Properties
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Copolymer Composition | Molecular Weight (kDa) | ρ (g.cm−3) | d-spacing (Å) | |
---|---|---|---|---|
Mw | PDI | |||
(x:y)(1:4) | 47.0 | 2.20 | 1.29 | 7.04, 12.72 |
(x:y)(1:6) | 48.8 | 1.74 | 1.30 | 6.98, 11.96 |
(x:y)(1:10) | 42.7 | 1.26 | 1.32 | 6.92 |
6FDA-durene a | 174.7 | 1.41 | 1.33 | 6.7 |
PIM-PI-1 b | 3.4 | 1.8 | 1.16 | - |
Copolymer Composition | Permeability | Selectivity | |||
---|---|---|---|---|---|
PCO2 | PN2 | PCH4 | αCO2/N2 | αCO2/CH4 | |
(x:y)(1:4) | 1265 | 74.1 | 69.4 | 17.05 | 18.23 |
(x:y)(1:6) | 1225 | 73.7 | 68.8 | 16.58 | 17.81 |
(x:y)(1:10) | 1047 | 64.4 | 60.2 | 16.25 | 17.39 |
PIM-PI-1 b | 2000 | 91.0 | 175 | 22.00 | 11.40 |
6FDA-Durene c | 495 | 41.1 | 37.3 | 12.1 | 13.24 |
Membrane Code | Diffusivity a | Diffusivity Selectivity | Solubility b | Solubility Selectivity | ||||||
---|---|---|---|---|---|---|---|---|---|---|
DCO2 | DN2 | DCH4 | DCO2/N2 | DCO2/CH4 | SCO2 | SN2 | SCH4 | SCO2/N2 | SCO2/CH4 | |
(x:y)(1:4) | 29.4 | 17.0 | 4.9 | 1.73 | 6.06 | 0.431 | 0.046 | 0.143 | 9.48 | 3.01 |
(x:y)(1:6) | 28.8 | 16.9 | 4.8 | 1.70 | 5.95 | 0.426 | 0.045 | 0.142 | 9.47 | 3.00 |
(x:y)(1:10) | 25.1 | 14.6 | 4.3 | 1.71 | 5.84 | 0.417 | 0.044 | 0.140 | 9.45 | 2.98 |
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Hossain, I.; Al Munsur, A.Z.; Kim, T.-H. A Facile Synthesis of (PIM-Polyimide)-(6FDA-Durene-Polyimide) Copolymer as Novel Polymer Membranes for CO2 Separation. Membranes 2019, 9, 113. https://doi.org/10.3390/membranes9090113
Hossain I, Al Munsur AZ, Kim T-H. A Facile Synthesis of (PIM-Polyimide)-(6FDA-Durene-Polyimide) Copolymer as Novel Polymer Membranes for CO2 Separation. Membranes. 2019; 9(9):113. https://doi.org/10.3390/membranes9090113
Chicago/Turabian StyleHossain, Iqubal, Abu Zafar Al Munsur, and Tae-Hyun Kim. 2019. "A Facile Synthesis of (PIM-Polyimide)-(6FDA-Durene-Polyimide) Copolymer as Novel Polymer Membranes for CO2 Separation" Membranes 9, no. 9: 113. https://doi.org/10.3390/membranes9090113