1
|
Yan S, Yu H, Chen Z. A polyimide/poly( N-vinylimidazole) membrane for CO 2/CH 4 separation with high selectivity and permeability. HIGH PERFORM POLYM 2022. [DOI: 10.1177/09540083221090671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Membranes with both good permeation and selectivity are highly desired for gas separations. In this study, we synthesized a new 6FDA-type polyimide copolymer 6FDA-BDTA-ODA, and then an organic polymer of poly ( N-vinylimidazole) was doped into the polyimide to prepare mixed matrix membranes (MMMs). We also studied the effect of poly ( N-vinylimidazole) contents on the separation performance of MMMs. The results showed that the ideal selectivity for CO2/CH4 was improved by adding the poly ( N-vinylimidazole) filler. The ideal selectivity reached 63.5 with 6 wt% poly ( N-vinylimidazole) loading with the permeability of 29.2 Barrer. The highly permeable MMMs showed a considerably enhanced performance for CO2/CH4 that close to the 2008 Robeson upper-bound. The gas separation performance of the prepared MMMs for CO2/CH4 was improved compared to that of the pure polymer membrane, indicating that the copolyimide/poly ( N-vinylimidazole) MMMs have promising applications in CO2/CH4 gas separation.
Collapse
Affiliation(s)
- Shuo Yan
- CNOOC Tianjin Chemical Research and Design Institute, Tianjin, China
| | - Haibin Yu
- CNOOC Tianjin Chemical Research and Design Institute, Tianjin, China
| | - Zan Chen
- CNOOC Tianjin Chemical Research and Design Institute, Tianjin, China
| |
Collapse
|
2
|
Stumphauser T, Kasza G, Domján A, Wacha A, Varga Z, Thomann Y, Thomann R, Pásztói B, Trötschler TM, Kerscher B, Mülhaupt R, Iván B. Nanoconfined Crosslinked Poly(ionic liquid)s with Unprecedented Selective Swelling Properties Obtained by Alkylation in Nanophase-Separated Poly(1-vinylimidazole)- l-poly(tetrahydrofuran) Conetworks. Polymers (Basel) 2020; 12:E2292. [PMID: 33036354 PMCID: PMC7599712 DOI: 10.3390/polym12102292] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/03/2020] [Accepted: 10/05/2020] [Indexed: 01/13/2023] Open
Abstract
Despite the great interest in nanoconfined materials nowadays, nanocompartmentalized poly(ionic liquid)s (PILs) have been rarely investigated so far. Herein, we report on the successful alkylation of poly(1-vinylimidazole) with methyl iodide in bicontinuous nanophasic poly(1-vinylimidazole)-l-poly(tetrahydrofuran) (PVIm-l-PTHF) amphiphilic conetworks (APCNs) to obtain nanoconfined methylated PVImMe-l-PTHF poly(ionic liquid) conetworks (PIL-CNs). A high extent of alkylation (~95%) was achieved via a simple alkylation process with MeI at room temperature. This does not destroy the bicontinuous nanophasic morphology as proved by SAXS and AFM, and PIL-CNs with 15-20 nm d-spacing and poly(3-methyl-1-vinylimidazolium iodide) PIL nanophases with average domain sizes of 8.2-8.4 nm are formed. Unexpectedly, while the swelling capacity of the PIL-CN dramatically increases in aprotic polar solvents, such as DMF, NMP, and DMSO, reaching higher than 1000% superabsorbent swelling degrees, the equilibrium swelling degrees decrease in even highly polar protic (hydrophilic) solvents, like water and methanol. An unprecedented Gaussian-type relationship was found between the ratios of the swelling degrees versus the polarity index, indicating increased swelling for the nanoconfined PVImMe-l-PTHF PIL-CNs in solvents with a polarity index between ~6 and 9.5. In addition to the nanoconfined structural features, the unique selective superabsorbent swelling behavior of the PIL-CNs can also be utilized in various application fields.
Collapse
Affiliation(s)
- Tímea Stumphauser
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
- George Hevesy PhD School of Chemistry, Institute of Chemistry, Faculty of Science, Eötvös Loránd University, Pázmány Péter sétány 2, H-1117 Budapest, Hungary
| | - György Kasza
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Attila Domján
- NMR Research Laboratory, Instrumentation Center, Research Centre for Natural Sciences, Magyar TudóSok Körútja 2, H-1117 Budapest, Hungary
| | - András Wacha
- Biological Nanochemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary
| | - Zoltán Varga
- Biological Nanochemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary
| | - Yi Thomann
- Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Ralf Thomann
- Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Balázs Pásztói
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
- George Hevesy PhD School of Chemistry, Institute of Chemistry, Faculty of Science, Eötvös Loránd University, Pázmány Péter sétány 2, H-1117 Budapest, Hungary
| | - Tobias M Trötschler
- Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
| | - Benjamin Kerscher
- Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
| | - Rolf Mülhaupt
- Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
| | - Béla Iván
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| |
Collapse
|
3
|
Fodor C, Kali G, Thomann R, Thomann Y, Iván B, Mülhaupt R. Nanophasic morphologies as a function of the composition and molecular weight of the macromolecular cross-linker in poly(N-vinylimidazole)-l-poly(tetrahydrofuran) amphiphilic conetworks: bicontinuous domain structure in broad composition ranges. RSC Adv 2017. [DOI: 10.1039/c6ra25356c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Compositionally asymmetrical morphologies and cocontinous nanophase-separated structures are formed over a broad composition range, affected by composition and the molecular weights of macromonomers.
Collapse
Affiliation(s)
- Csaba Fodor
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| | - Gergely Kali
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| | - Ralf Thomann
- Freiburg Materials Research Center and Institute for Macromolecular Chemistry
- University of Freiburg
- D-79104 Freiburg
- Germany
| | - Yi Thomann
- Freiburg Materials Research Center and Institute for Macromolecular Chemistry
- University of Freiburg
- D-79104 Freiburg
- Germany
| | - Béla Iván
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| | - Rolf Mülhaupt
- Freiburg Materials Research Center and Institute for Macromolecular Chemistry
- University of Freiburg
- D-79104 Freiburg
- Germany
| |
Collapse
|
4
|
Guzman G, Nugay T, Kennedy JP, Cakmak M. Real-Time Monitoring of Chemical and Topological Rearrangements in Solidifying Amphiphilic Polymer Co-Networks: Understanding Surface Demixing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3445-3451. [PMID: 27004445 DOI: 10.1021/acs.langmuir.6b00587] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Amphiphilic polymer co-networks provide a unique route to integrating contrasting attributes of otherwise immiscible components within a bicontinuous percolating morphology and are anticipated to be valuable for applications such as biocatalysis, sensing of metabolites, and dual dialysis membranes. These co-networks are in essence chemically forced blends and have been shown to selectively phase-separate at surfaces during film formation. Here, we demonstrate that surface demixing at the air-film interface in solidifying polymer co-networks is not a unidirectional process; instead, a combination of kinetic and thermodynamic interactions leads to dynamic molecular rearrangement during solidification. Time-resolved gravimetry, low contact angles, and negative out-of-plane birefringence provided strong experimental evidence of the transitory trapping of thermodynamically unfavorable hydrophilic moieties at the air-film interface due to fast asymmetric solvent depletion. We also find that slow-drying hydrophobic elements progressively substitute hydrophilic domains at the surface as the surface energy is minimized. These findings are broadly applicable to common-solvent bicontinuous systems and open the door for process-controlled performance improvements in diverse applications. Similar observations could potentially be coupled with controlled polymerization rates to maximize the intermingling of bicontinuous phases at surfaces, thus generating true three-dimensional, bicontinuous, and undisturbed percolation pathways throughout the material.
Collapse
Affiliation(s)
| | - Turgut Nugay
- Chemistry Department, Polymer Research Center, Boğaziçi University , 34342 Bebek, Istanbul, Turkey
| | | | | |
Collapse
|
5
|
Chandel AKS, Kumar CU, Jewrajka SK. Effect of Polyethylene Glycol on Properties and Drug Encapsulation-Release Performance of Biodegradable/Cytocompatible Agarose-Polyethylene Glycol-Polycaprolactone Amphiphilic Co-Network Gels. ACS APPLIED MATERIALS & INTERFACES 2016; 8:3182-92. [PMID: 26760672 DOI: 10.1021/acsami.5b10675] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We synthesized agarose-polycaprolactone (Agr-PCL) bicomponent and Agr-polyethylene glycol-PCL (Agr-PEG-PCL) tricomponent amphiphilic co-network (APCN) gels by the sequential nucleophilic substitution reaction between amine-functionalized Agr and activated halide terminated PCL or PCL-b-PEG-b-PCL copolymer for the sustained and localized delivery of hydrophilic and hydrophobic drugs. The biodegradability of the APCNs was confirmed using lipase and by hydrolytic degradation. These APCN gels displayed good cytocompatibility and blood compatibility. Importantly, these APCN gels exhibited remarkably high drug loading capacity coupled with sustained and triggered release of both hydrophilic and hydrophobic drugs. PEG in the APCNs lowered the degree of phase separation and enhanced the mechanical property of the APCN gels. The drug loading capacity and the release kinetics were also strongly influenced by the presence of PEG, the nature of release medium, and the nature of the drug. Particularly, PEG in the APCN gels significantly enhanced the 5-fluorouracil loading capacity and lowered its release rate and burst release. Release kinetics of highly water-soluble gemcitabine hydrochloride and hydrophobic prednisolone acetate depended on the extent of water swelling of the APCN gels. Cytocompatibility/blood compatibility and pH and enzyme-triggered degradation together with sustained release of drugs show great promise for the use of these APCN gels in localized drug delivery and tissue engineering applications.
Collapse
Affiliation(s)
- Arvind K Singh Chandel
- Reverse Osmosis Membrane Division, CSIR and ‡Academy of Scientific and Innovative Research-AcSIR, Central Salt and Marine Chemicals Research Institute , Gijubhai Badheka Marg, Bhavnagar, Gujarat 364002, India
| | - Chinta Uday Kumar
- Reverse Osmosis Membrane Division, CSIR and ‡Academy of Scientific and Innovative Research-AcSIR, Central Salt and Marine Chemicals Research Institute , Gijubhai Badheka Marg, Bhavnagar, Gujarat 364002, India
| | - Suresh K Jewrajka
- Reverse Osmosis Membrane Division, CSIR and ‡Academy of Scientific and Innovative Research-AcSIR, Central Salt and Marine Chemicals Research Institute , Gijubhai Badheka Marg, Bhavnagar, Gujarat 364002, India
| |
Collapse
|
6
|
Zhang L, Zhang C, Peng X, He C. A clean synthesis approach to biocompatible amphiphilic conetworks via reversible addition–fragmentation chain transfer polymerization and thiol–ene chemistry. RSC Adv 2016. [DOI: 10.1039/c5ra25007b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of APCNs from amphiphilic clickable pentablock copolymers with narrow polydispersity were synthesized via RAFT polymerization. The resulting APCNs exhibit unique amphiphilic characters, and can be potentially employed in some biomaterial applications.
Collapse
Affiliation(s)
- Li Zhang
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
| | - Chengfeng Zhang
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
| | - Xiaoquan Peng
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
| | - Chunju He
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
| |
Collapse
|
7
|
Fodor C, Stumphauser T, Thomann R, Thomann Y, Iván B. Poly(N-vinylimidazole)-l-poly(propylene glycol) amphiphilic conetworks and gels: molecularly forced blends of incompatible polymers with single glass transition temperatures of unusual dependence on the composition. Polym Chem 2016. [DOI: 10.1039/c6py00848h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New molecularly forced blends of incompatible poly(N-vinylimidazole) and poly(propylene glycol) polymers with single glass transition temperatures.
Collapse
Affiliation(s)
- Csaba Fodor
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| | - Tímea Stumphauser
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| | - Ralf Thomann
- Freiburg Materials Research Center
- Albert-Ludwigs University Freiburg
- D-79104 Freiburg
- Germany
| | - Yi Thomann
- Freiburg Materials Research Center
- Albert-Ludwigs University Freiburg
- D-79104 Freiburg
- Germany
| | - Béla Iván
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| |
Collapse
|