Journal ArticleDOI
Cross-linking of poly (ether-block-amide) by poly (ethylene glycol) diacrylate to prepare plasticizing-resistant CO2-selective membranes
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TLDR
In this paper, the effect of poly (ethylene glycol) diacrylate (PEGDA) concentration on the structure and properties of the poly(ether-block-amide) (Pebax-1657) composite membranes with high performance for CO2 separation was investigated.Abstract:
In this study, poly (ethylene glycol) diacrylate (PEGDA) comprising CO2-philic ether oxygen groups was used as a cross-linking agent to develop plasticizing-resistant poly (ether-block-amide) (Pebax-1657) composite membranes with high performance for CO2 separation. The effect of PEGDA concentration on the structure and properties of the membranes as well as gas separation efficiency was investigated. The FT-IR analysis and swelling measurements confirmed the influential role of PEGDA as the cross-linking agent in the prepared membranes. Based on the performed characterization analyzes, it was found that the concentration of the cross-linking agent strongly affects the structural and CO2 separation properties of the cross-linked Pebax membranes. By introducing a cross-linking reaction, the tightness and crystallinity of modified Pebax membranes enhanced compared to the uncross-linked Pebax membrane. The DSC analysis indicated the Tg of the prepared Pebax membranes increased from −54.7 °C to −52.45 °C by increasing the PEGDA content. When the PEGDA concentration increased from 0 wt% to 6 wt%, the selectivity of CO2/N2, CO2/CH4, and CH4/N2 enhanced by 294%, 105%, and 92%, respectively, while the gas permeabilities slightly decreased. The cross-linked Pebax-1657 membrane containing 6 wt% of PEGDA surpassed the Robeson’s upper bound and denoted a prosperous separation performance in the case of CO2 separation from CH4 and N2, compared to the uncross-linked Pebax.read more
Citations
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Enhanced Separator Properties By Thermal Curing of Poly(ethylene glycol)Diacrylate-Based Gel Polymer Electrolytes for Lithium-Ion Batteries
TL;DR: In this paper, a Li x CoO 2 /graphite full-cell that has a gel electrolyte with optimized PEGDA content on the separator of a nonwoven polyvinylidene fluoride separator achieves a battery performance superior to the one with PE.
Journal ArticleDOI
Study on the advantageous effect of nano-clay and polyurethane on structure and CO2 separation performance of polyethersulfone based ternary mixed matrix membranes
TL;DR: In this paper , the effect of polyurethane and nano-clay on structure and CO2 separating properties of polyethersulfone (PES) based three-component mixed matrix membranes (MMMs) was investigated.
Journal ArticleDOI
Engineered graphene-based mixed matrix membranes to boost CO2 separation performance: Latest developments and future prospects
Farhang Pazani,Mohammad Salehi Maleh,Mehrdad Shariatifar,Maisam Jalaly,Mohtada Sadrzadeh,Mashallah Rezakazemi +5 more
TL;DR: In this article , the most recent advances on the application of GNS-based MMMs for CO2 separation are comprehensively reviewed and rational strategies to boost gas separation performance are provided in detail.
Journal ArticleDOI
Preparation of high performance mixed matrix membranes by one-pot synthesis of ZIF-8 nanoparticles into Pebax-2533 for CO2 separation
TL;DR: In this article , an interesting strategy was proposed to incorporate ZIF-8 nanoparticles into the Pebax-2533 for facile fabrication of MMMs with high permeability and selectivity.
Journal ArticleDOI
Improved gas separation performance of Pebax®1657 membrane modified by poly-alcoholic compounds
Danial Nobakht,Reza Abedini +1 more
TL;DR: In this paper , a mixture of polyamide and polyether segments within the total matrix gives superior properties to Pebax, providing it significant CO 2 permeation compared to the other light gases such as CH 4 and N 2 .
References
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Journal ArticleDOI
The upper bound revisited
TL;DR: The empirical upper bound relationship for membrane separation of gases initially published in 1991 has been reviewed with the myriad of data now presently available as mentioned in this paper, which indicates a different solubility selectivity relationship for perfluorinated polymers compared to hydrocarbon/aromatic polymers.
Reference EntryDOI
Interpretation of Infrared Spectra, A Practical Approach
TL;DR: In this paper, the authors present a first-pass interpretation of the infrared spectrum of a molecule, based on structural features of the molecule, whether they are the backbone of the molecules or the functional groups attached to the molecule.
Journal ArticleDOI
Materials selection guidelines for membranes that remove co2 from gas mixtures
Haiqing Lin,Benny D. Freeman +1 more
TL;DR: In this paper, a simple model based on free volume theory is used to correlate a wide range of CO 2 permeability coefficients in PEO containing materials, and the results are satisfactory, particularly given the simplicity of the model.
Journal ArticleDOI
Plasticization-Enhanced Hydrogen Purification Using Polymeric Membranes
Haiqing Lin,Haiqing Lin,Elizabeth M. Van Wagner,Elizabeth M. Van Wagner,Benny D. Freeman,Benny D. Freeman,Lora Toy,Lora Toy,Raghubir P. Gupta,Raghubir P. Gupta +9 more
TL;DR: High permeable, reverse-selective membrane materials for hydrogen purification, as exemplified by molecularly engineered, highly branched, cross-linked poly(ethylene oxide), are reported, demonstrating that plasticization can be harnessed to improve separation performance.
Journal ArticleDOI
Gas transport properties of poly(ether-b-amide) segmented block copolymers
TL;DR: In this paper, the permeability properties of H2, N2, and CO2 were determined at 35 °C and pressures up to 15 atm in phase-separated polyether-b-polyamide segmented block copolymers.