1
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Hong YW, Laysandra L, Chiu YC, Kang DY. Vacuum-Assisted Self-Healing Amphiphilic Copolymer Membranes for Gas Separation. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37411032 DOI: 10.1021/acsami.3c06518] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
Membrane gas separation provides a multitude of benefits over alternative separation techniques, especially in terms of energy efficiency and environmental sustainability. While polymeric membranes have been extensively investigated for gas separations, their self-healing capabilities have often been neglected. In this work, we have developed innovative self-healing amphiphilic copolymers by strategically incorporating three functional segments: n-butyl acrylate (BA), N-(hydroxymethyl)acrylamide (NMA), and methacrylic acid (MAA). Utilizing these three functional components, we have synthesized two distinct amphiphilic copolymers, namely, APNMA (PBAx-co-PNMAy) and APMAA (PBAx-co-PMAAy). These copolymers have been meticulously designed for gas separation applications. During the creation of these amphiphilic copolymers, BA and NMA segments were selected due to their vital role in the ease of tuning mechanical and self-healing properties. The functional groups (-OH and -NH) present on the NMA segment interact with CO2 through hydrogen bonding, thereby boosting CO2/N2 separation and achieving superior selectivity. We assessed the self-healing potential of these amphiphilic copolymer membranes using two distinct strategies: conventional and vacuum-assisted self-healing. In the vacuum-assisted approach, a robust vacuum pump generates a suction force, leading to the formation of a cone-like shape in the membrane. This formation allows common fracture sites to adhere and trigger the self-healing process. As a result, APNMA maintains its high gas permeability and CO2/N2 selectivity even after the vacuum-assisted self-healing operation. The ideal CO2/N2 selectivity of the APNMA membrane aligns closely with the commercially available PEBAX-1657 membrane (17.54 vs 20.09). Notably, the gas selectivity of the APNMA membrane can be readily restored after damage, in contrast to the PEBAX-1657 membrane, which loses its selectivity upon damage.
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Affiliation(s)
- Yao-Wei Hong
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Livy Laysandra
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106335, Taiwan
| | - Yu-Cheng Chiu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106335, Taiwan
| | - Dun-Yen Kang
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
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2
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Lee JS, Taghavimehr M, Montazami R, Green MD. Synthesis and characterization of poly(tetramethylene oxide)-based segmented ionenes block copolymer with aliphatic or DABCO hard segments. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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3
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Wang Y, Liu B, Wang X, Fan Y. Comparison of Constituents and Antioxidant Activity of Above-Ground and Underground Parts of Dryopteris crassirhizoma Nakai Based on HS-SPME-GC-MS and UPLC/Q-TOF-MS. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27154991. [PMID: 35956948 PMCID: PMC9370178 DOI: 10.3390/molecules27154991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022]
Abstract
Dryopteris crassirhizoma Nakai is a Chinese traditional medicinal fern plant for heat-clearing and detoxifying, promoting blood circulation and dissipating blood stasis. Previous researches showed that many factors could influence the components of medicinal plants, and the plant part is one of the main factors. So far, only the underground part of D. crassirhizoma, called “Mianma Guanzhong”, has been widely sold in the market. However, the above-ground part was usually at low utilization, resulting in a waste of medicinal resources. In order to further develop and utilize the medicinal resources of D. crassirhizoma, the constituents, total flavonoid contents and antioxidant activity of the above-ground and underground parts of D. crassirhizoma were tentatively analyzed and compared based on HS-SPME-GC-MS and UPLC/Q-TOF-MS. The results showed that (1) the volatile components were mainly focused in the above-ground part of D. crassirhizoma, including 3-carene, isoledene, ionene, 4-amino-1-naphthol and furfural. (2) Nonvolatile components of the underground part of D. crassirhizoma contained phenolic acid, flavonoids, phloroglucinol and less fatty acid. (3) The common compounds of the above-ground and underground parts of D. crassirhizoma were phenolic acid and flavaspidic acid AB. (4) Antioxidant activity of the underground part was stronger than that of the above-ground part of D. crassirhizoma. In conclusion, both the above-ground and underground parts of D. crassirhizoma are important medicinal resources worthy of further development.
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Affiliation(s)
- Yanjia Wang
- College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
| | - Baodong Liu
- College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
| | - Xin Wang
- College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Correspondence: or (X.W.); (Y.F.)
| | - Yawen Fan
- College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
- Correspondence: or (X.W.); (Y.F.)
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4
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Kammakakam I, O’Harra KE, Bara JE, Jackson EM. Spirobisindane-Containing Imidazolium Polyimide Ionene: Structural Design and Gas Separation Performance of “Ionic PIMs”. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Irshad Kammakakam
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Kathryn E. O’Harra
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Jason E. Bara
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Enrique M. Jackson
- NASA Marshall Space Flight Center, Huntsville, Alabama 35812, United States
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5
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Jehanno C, Alty JW, Roosen M, De Meester S, Dove AP, Chen EYX, Leibfarth FA, Sardon H. Critical advances and future opportunities in upcycling commodity polymers. Nature 2022; 603:803-814. [PMID: 35354997 DOI: 10.1038/s41586-021-04350-0] [Citation(s) in RCA: 233] [Impact Index Per Article: 116.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 12/14/2021] [Indexed: 12/17/2022]
Abstract
The vast majority of commodity plastics do not degrade and therefore they permanently pollute the environment. At present, less than 20% of post-consumer plastic waste in developed countries is recycled, predominately for energy recovery or repurposing as lower-value materials by mechanical recycling. Chemical recycling offers an opportunity to revert plastics back to monomers for repolymerization to virgin materials without altering the properties of the material or the economic value of the polymer. For plastic waste that is either cost prohibitive or infeasible to mechanically or chemically recycle, the nascent field of chemical upcycling promises to use chemical or engineering approaches to place plastic waste at the beginning of a new value chain. Here state-of-the-art methods are highlighted for upcycling plastic waste into value-added performance materials, fine chemicals and specialty polymers. By identifying common conceptual approaches, we critically discuss how the advantages and challenges of each approach contribute to the goal of realizing a sustainable plastics economy.
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Affiliation(s)
- Coralie Jehanno
- POLYMAT, University of the Basque Country UPV/EHU, Donostia-San Sebastian, Spain.,POLYKEY, Donostia-San Sebastian, Spain
| | - Jill W Alty
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Martijn Roosen
- Laboratory for Circular Process Engineering, Ghent University, Kortrijk, Belgium
| | - Steven De Meester
- Laboratory for Circular Process Engineering, Ghent University, Kortrijk, Belgium.
| | - Andrew P Dove
- School of Chemistry, University of Birmingham, Birmingham, UK
| | - Eugene Y-X Chen
- Department of Chemistry, Colorado State University, Fort Collins, CO, USA
| | - Frank A Leibfarth
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Haritz Sardon
- POLYMAT, University of the Basque Country UPV/EHU, Donostia-San Sebastian, Spain.
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6
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Synthesis and characterization of Poly(ethylene glycol)-based segmented ionenes block copolymer with aliphatic or DABCO hard segments. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Barbosa GD, Turner CH. Martini Coarse-Grained Model for Poly(alkylimidazolium) Ionenes and Applications in Aromatic Compound Extraction. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Gabriel D. Barbosa
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - C. Heath Turner
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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8
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Wanghofer F, Wolfberger A, Wolfahrt M, Schlögl S. Cross-Linking and Evaluation of the Thermo-Mechanical Behavior of Epoxy Based Poly(ionic Liquid) Thermosets. Polymers (Basel) 2021; 13:3914. [PMID: 34833212 PMCID: PMC8620924 DOI: 10.3390/polym13223914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/27/2021] [Accepted: 11/08/2021] [Indexed: 11/23/2022] Open
Abstract
Poly(ionic liquids) (PILs) and ionenes are polymers containing ionic groups in their repeating units. The unique properties of these polymers render them as interesting candidates for a variety of applications, such as gas separation membranes and polyelectrolytes. Due to the vast number of possible structures, numerous synthesis protocols to produce monomers with different functional groups for task-specific PILs are reported in literature. A difunctional epoxy-IL resin was synthesized and cured with multifunctional amine and anhydride hardeners and the thermal and thermomechanical properties of the networks were assessed via differential scanning calorimetry and dynamic mechanical analysis. By the selection of suitable hardeners, the glass transition onset temperature (Tg,onset) of the resulting networks was varied between 18 °C and 99 °C. Copolymerization of epoxy-IL with diglycidyl ether of bisphenol A (DGEBA) led to a further increase of the Tg,onset. The results demonstrate the potential of epoxy chemistry for tailorable PIL networks, where the hardener takes the place of the ligands without requiring an additional synthesis step and can be chosen from a broad range of commercially available compounds.
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Affiliation(s)
| | - Archim Wolfberger
- Polymer Competence Center Leoben GmbH, Roseggerstraße 12, 8700 Leoben, Austria; (F.W.); (M.W.); (S.S.)
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9
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Stadler BM, de Vries JG. Chemical upcycling ofpolymers. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2021; 379:20200341. [PMID: 34510924 DOI: 10.1098/rsta.2020.0341] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/28/2021] [Indexed: 06/13/2023]
Abstract
As the production volume of polymers increases, so does the amount of plastic waste. Plastic recycling is one of the concepts to address in this issue. Unfortunately, only a small fraction of plastic waste is recycled. Even with the development of polymers for closed loop recycling that can be in theory reprocessed infinitely the inherent dilemma is that because of collection, cleaning and separation processes the obtained materials simply are not cost competitive with virgin materials. Chemical upcycling, the conversion of polymers to higher valuable products, either polymeric or monomeric, could mitigate this issue. In the following article, we highlight recent examples in this young but fast-growing field. This article is part of the theme issue 'Bio-derived and bioinspired sustainable advanced materials for emerging technologies (part 2)'.
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Affiliation(s)
- Bernhard M Stadler
- Leibniz-Institut für Katalyse e.V. (LIKAT Rostock), Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Johannes G de Vries
- Leibniz-Institut für Katalyse e.V. (LIKAT Rostock), Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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10
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O’Harra KE, DeVriese EM, Turflinger EM, Noll DM, Bara JE. Design and Gas Separation Performance of Imidazolium Poly(ILs) Containing Multivalent Imidazolium Fillers and Crosslinking Agents. Polymers (Basel) 2021; 13:polym13091388. [PMID: 33923351 PMCID: PMC8123196 DOI: 10.3390/polym13091388] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 11/16/2022] Open
Abstract
This work introduces a series of vinyl-imidazolium-based polyelectrolyte composites, which were structurally modified via impregnation with multivalent imidazolium-benzene ionic liquids (ILs) or crosslinked with novel cationic crosslinkers which possess internal imidazolium cations and vinylimidazolium cations at the periphery. A set of eight [C4vim][Tf2N]-based membranes were prepared via UV-initiated free radical polymerization, including four composites containing di-, tri-, tetra-, and hexa-imidazolium benzene ILs and four crosslinked derivatives which utilized tri- and tetra- vinylimidazolium benzene crosslinking agents. Structural and functional characterizations were performed, and pure gas permeation data were collected to better understand the effects of “free” ILs dispersed in the polymeric matrix versus integrated ionic crosslinks on the transport behaviors of these thin films. These imidazolium PIL:IL composites exhibited moderately high CO2 permeabilities (~20–40 Barrer), a 4–7× increase relative to corresponding neat PIL, with excellent selectivities against N2 or CH4. The addition of imidazolium-benzene fillers with increased imidazolium content were shown to correspondingly enhance CO2 solubility (di- < tri- < tetra- < hexa-), with the [C4vim][Tf2N]: [Hexa(Im+)Benz ][Tf2N] composite showing the highest CO2 permeability (PCO2 = 38.4 Barrer), while maintaining modest selectivities (αCO2/CH4 = 20.2, αCO2/N2 = 23.6). Additionally, these metrics were similarly improved with the integration of more ionic content bonded to the polymeric matrix; increased PCO2 with increased wt% of the tri- and tetra-vinylimidazolium benzene crosslinking agent was observed. This study demonstrates the intriguing interactions and effects of ionic additives or crosslinkers within a PIL matrix, revealing the potential for the tuning of the properties and transport behaviors of ionic polymers using ionic liquid-inspired small molecules.
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11
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Kammakakam I, O'Harra KE, Jackson EM, Bara JE. Synthesis of imidazolium-mediated Poly(benzoxazole) Ionene and composites with ionic liquids as advanced gas separation membranes. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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O'Harra KE, Bara JE. Toward controlled functional sequencing and hierarchical structuring in imidazolium ionenes. POLYM INT 2020. [DOI: 10.1002/pi.6109] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kathryn E O'Harra
- Department of Chemical and Biological Engineering University of Alabama Tuscaloosa AL USA
| | - Jason E Bara
- Department of Chemical and Biological Engineering University of Alabama Tuscaloosa AL USA
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13
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Dennis GP, O'Harra KE, Kammakakam I, Jones TA, Mittenthal MS, Flowers BS, Tuan Y, Jackson EM, Bara JE. 6FDA
‐containing
polyimide‐ionene
+ ionic liquid gas separation membranes. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200325] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Grayson P. Dennis
- Department of Chemical & Biological Engineering University of Alabama Tuscaloosa Alabama USA
| | - Kathryn E. O'Harra
- Department of Chemical & Biological Engineering University of Alabama Tuscaloosa Alabama USA
| | - Irshad Kammakakam
- Department of Chemical & Biological Engineering University of Alabama Tuscaloosa Alabama USA
| | - Tristin A. Jones
- Department of Chemical & Biological Engineering University of Alabama Tuscaloosa Alabama USA
| | - Max S. Mittenthal
- Department of Chemical & Biological Engineering University of Alabama Tuscaloosa Alabama USA
| | - Brian S. Flowers
- Department of Chemical & Biological Engineering University of Alabama Tuscaloosa Alabama USA
| | - Yi Tuan
- NASA Marshall Space Flight Center Huntsville Alabama USA
| | | | - Jason E. Bara
- Department of Chemical & Biological Engineering University of Alabama Tuscaloosa Alabama USA
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14
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Demarteau J, O'Harra KE, Bara JE, Sardon H. Valorization of Plastic Wastes for the Synthesis of Imidazolium-Based Self-Supported Elastomeric Ionenes. CHEMSUSCHEM 2020; 13:3122-3126. [PMID: 32314494 DOI: 10.1002/cssc.202000505] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/30/2020] [Indexed: 06/11/2023]
Abstract
Imidazolium-based ionenes are known to be high-performance materials for a great variety of applications. The preparation of these polymers requires the use of bis-imidazole starting monomers, which are commonly prepared by using toxic chloride reagents. In this study, bis-imidazole monomers are synthesized by organocatalytic chemical recycling of discarded plastics through chemical depolymerization. By using poly(ethylene terephthalate) and bisphenol A polycarbonate as starting materials, different monomers containing amide or urea functionalities are prepared to produce high-molecular-weight ionic polymers. These novel ionenes show excellent elastomeric and self-healing behavior, serving as a promising means to expand the exploration of plastic wastes as a source of new materials.
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Affiliation(s)
- Jeremy Demarteau
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa 7, 20018, Donostia-San Sebastian, Spain
| | - Kathryn E O'Harra
- University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL, 35487-0203, USA
| | - Jason E Bara
- University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL, 35487-0203, USA
| | - Haritz Sardon
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa 7, 20018, Donostia-San Sebastian, Spain
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15
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Designing Imidazolium Poly(amide-amide) and Poly(amide-imide) Ionenes and Their Interactions with Mono- and Tris(imidazolium) Ionic Liquids. Polymers (Basel) 2020; 12:polym12061254. [PMID: 32486156 PMCID: PMC7362236 DOI: 10.3390/polym12061254] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 11/17/2022] Open
Abstract
Here we introduce the synthesis and thermal properties of a series of sophisticated imidazolium ionenes with alternating amide-amide or amide-imide backbone functionality, and investigate the structural effects of mono(imidazolium) and unprecedented tris(imidazolium) ionic liquids (ILs) in these ionenes. The new set of poly(amide-amide) (PAA) and poly(amide-imide) (PAI) ionenes represent the intersection of conventional high-performance polymers with the ionene archetype-presenting polymers with alternating functional and ionic elements precisely sequenced along the backbone. The effects of polymer composition on the thermal properties and morphology were analyzed. Five distinct polymer backbones were synthesized and combined with a stoichiometric equivalent of the IL 1-benzyl-3-methylimidazolium bistriflimide ([Bnmim][Tf2N]), which were studied to probe the self-assembly, structuring, and contributions of intermolecular forces when IL is added. Furthermore, three polyamide (PA) or polyimide (PI) ionenes with simpler xylyl linkages were interfaced with [Bnmim][Tf2N] as well as a novel amide-linked tris(imidazolium) IL, to demonstrate the structural changes imparted by the inclusion of functional, ionic additives dispersed within the ionene matrix. This work highlights the possibilities for utilizing concepts from small molecules which exhibit supramolecular self-assembly to guide creative design and manipulate the structuring of ionenes.
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16
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O'Harra KE, Kammakakam I, Noll DM, Turflinger EM, Dennis GP, Jackson EM, Bara JE. Synthesis and Performance of Aromatic Polyamide Ionenes as Gas Separation Membranes. MEMBRANES 2020; 10:E51. [PMID: 32235739 PMCID: PMC7143725 DOI: 10.3390/membranes10030051] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/17/2020] [Accepted: 03/20/2020] [Indexed: 11/16/2022]
Abstract
Here, we report the synthesis and thermophysical properties of seven primarily aromatic, imidazolium-based polyamide ionenes. The effects of varied para-, meta-, and ortho-connectivity, and spacing of ionic and amide functional groups, on structural and thermophysical properties were analyzed. Suitable, robust derivatives were cast into thin films, neat, or with stoichiometric equivalents of the ionic liquid (IL) 1-benzy-3-methylimidazolium bistriflimide ([Bnmim][Tf2N]), and the gas transport properties of these membranes were measured. Pure gas permeabilities and permselectivities for N2, CH4, and CO2 are reported. Consistent para-connectivity in the backbone was shown to yield the highest CO2 permeability and suitability for casting as a very thin, flexible film. Derivatives containing terephthalamide segments exhibited the highest CO2/CH4 and CO2/N2 selectivities, yet CO2 permeability decreased with further deviation from consistent para-linkages.
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Affiliation(s)
- Kathryn E O'Harra
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | - Irshad Kammakakam
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | - Danielle M Noll
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | - Erika M Turflinger
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | - Grayson P Dennis
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | | | - Jason E Bara
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
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17
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Kammakakam I, Bara JE, Jackson EM. Synthesis and characterization of imidazolium-mediated Tröger's base containing poly(amide)-ionenes and composites with ionic liquids for CO 2 separation membranes. Polym Chem 2020. [DOI: 10.1039/d0py01038c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Considerable attention has been given to polymeric membranes either containing, or built from, ionic liquids (ILs) in gas separation processes due to their selective separation of CO2 molecules.
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Affiliation(s)
- Irshad Kammakakam
- University of Alabama
- Department of Chemical & Biological Engineering
- Tuscaloosa
- USA
| | - Jason E. Bara
- University of Alabama
- Department of Chemical & Biological Engineering
- Tuscaloosa
- USA
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18
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Zhang X, Wang J. Controllable interfacial adhesion behaviors of polymer-on-polymer surfaces during fused deposition modeling 3D printing process. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.136959] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Radchenko AV, Duchet-Rumeau J, Gérard JF, Baudoux J, Livi S. Cycloaliphatic epoxidized ionic liquids as new versatile monomers for the development of shape memory PIL networks by 3D printing. Polym Chem 2020. [DOI: 10.1039/d0py00704h] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Efficient synthesis of cycloaliphatic epoxy IL monomers followed by thermal curing to obtain shape-memory hydrophobic PIL networks is reported for the first time.
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Affiliation(s)
| | | | | | - Jérôme Baudoux
- Laboratoire de Chimie Moléculaire et Thio-organique
- ENSICAEN
- Université de Normandie
- CNRS
- 14050 Caen
| | - Sébastien Livi
- Université de Lyon
- CNRS
- UMR 5223
- Ingénierie des Matériaux Polymères
- INSA Lyon
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20
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O'Harra KE, Kammakakam I, Devriese EM, Noll DM, Bara JE, Jackson EM. Synthesis and Performance of 6FDA-Based Polyimide-Ionenes and Composites with Ionic Liquids as Gas Separation Membranes. MEMBRANES 2019; 9:E79. [PMID: 31277233 PMCID: PMC6681123 DOI: 10.3390/membranes9070079] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/25/2019] [Accepted: 06/29/2019] [Indexed: 12/04/2022]
Abstract
Three new isomeric 6FDA-based polyimide-ionenes, with imidazolium moieties and varying regiochemistry (para-, meta-, and ortho- connectivity), and composites with three different ionic liquids (ILs) have been developed as gas separation membranes. The structural-property relationships and gas separation behaviors of the newly developed 6FDA polyimide-ionene + IL composites have been extensively studied. All the 6FDA-based polyimide-ionenes exhibited good compatibility with the ILs and produced homogeneous hybrid membranes with the high thermal stability of ~380 °C. Particularly, [6FDA I4A pXy][Tf2N] ionene + IL hybrids having [C4mim][Tf2N] and [Bnmim][Tf2N] ILs offered mechanically stable matrixes with high CO2 affinity. The permeability of CO2 was increased by factors of 2 and 3 for C4mim and Bnmim hybrids (2.15 to 6.32 barrers), respectively, compared to the neat [6FDA I4A pXy][Tf2N] without sacrificing their permselectivity for CO2/CH4 and CO2/N2 gas pairs.
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Affiliation(s)
- Kathryn E O'Harra
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | - Irshad Kammakakam
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | - Emily M Devriese
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | - Danielle M Noll
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA
| | - Jason E Bara
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487-0203, USA.
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