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Tian JJ, Liu X, Ye L, Zhang Z, Quinn EC, Shi C, Broadbelt LJ, Marks TJ, Chen EYX. Redesigned Nylon 6 Variants with Enhanced Recyclability, Ductility, and Transparency. Angew Chem Int Ed Engl 2024; 63:e202320214. [PMID: 38418405 DOI: 10.1002/anie.202320214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/17/2024] [Accepted: 02/28/2024] [Indexed: 03/01/2024]
Abstract
Geminal (gem-) disubstitution in heterocyclic monomers is an effective strategy to enhance polymer chemical recyclability by lowering their ceiling temperatures. However, the effects of specific substitution patterns on the monomer's reactivity and the resulting polymer's properties are largely unexplored. Here we show that, by systematically installing gem-dimethyl groups onto ϵ-caprolactam (monomer of nylon 6) from the α to ϵ positions, both the redesigned lactam monomer's reactivity and the resulting gem-nylon 6's properties are highly sensitive to the substitution position, with the monomers ranging from non-polymerizable to polymerizable and the gem-nylon properties ranging from inferior to far superior to the parent nylon 6. Remarkably, the nylon 6 with the gem-dimethyls substituted at the γ position is amorphous and optically transparent, with a higher Tg (by 30 °C), yield stress (by 1.5 MPa), ductility (by 3×), and lower depolymerization temperature (by 60 °C) than conventional nylon 6.
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Affiliation(s)
- Jun-Jie Tian
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA
| | - Xiaoyang Liu
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Liwei Ye
- Department of Chemistry and the Trienens Institute for Sustainability and Energy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Zhen Zhang
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA
| | - Ethan C Quinn
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA
| | - Changxia Shi
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA
| | - Linda J Broadbelt
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Tobin J Marks
- Department of Chemistry and the Trienens Institute for Sustainability and Energy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Eugene Y-X Chen
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA
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2
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Ghorai A, Banerjee S. Phosphorus-Containing Aromatic Polymers: Synthesis, Structure, Properties and Membrane-Based Applications. Prog Polym Sci 2023. [DOI: 10.1016/j.progpolymsci.2023.101646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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3
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Optical and Flame-Retardant Properties of a Series of Polyimides Containing Side Chained Bulky Phosphaphenanthrene Units. Int J Mol Sci 2022; 23:ijms232113174. [DOI: 10.3390/ijms232113174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/20/2022] [Accepted: 10/26/2022] [Indexed: 11/17/2022] Open
Abstract
Among the multitude of polymers with carbon-based macromolecular architectures that easily ignite in certain applications where short circuits may occur, polyimide has evolved as a class of polymers with high thermal stability while exhibiting intrinsic flame retardancy at elevated temperatures via a char-forming mechanism. However, high amounts of aromatic rings in the macromolecular backbone are required for these results, which may affect other properties such as film-forming capacity or mechanical properties; thus, much work has been done to structurally derivatize or make hybrid polyimide systems. In this respect, flexible polyimide films (PI(1–4)) containing bulky 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) units have been developed starting from commercial dianhydrides and an aromatic diamine containing two side chain bulky DOPO groups. The chemical structure of PI(1–4)) was characterized by 1H NMR, 13C NMR and 31P NMR spectroscopy. The optical properties, including absorption and luminescence spectra of these polymers, were analyzed. All polyimides containing DOPO derivatives emitted blue light with an emission maxima in the range of 340–445 nm, in solvents such as N,N-dimethylformamide, N-methyl-2-pyrrolidone, chloroform, and N,N-dimethylacetamide, while green light emission (λem = 487 nm for PI-4) was evidenced in a thin-film state. The thermal decomposition mechanism and flame-retardant behavior of the resulting materials were investigated by pyrolysis-gas-chromatography spectrometry (Py-GC), scanning electron microscopy (SEM), EDX maps and FTIR spectroscopy. The residues resulting from the TGA experiments were examined by SEM microscopy images and FTIR spectra to understand the pyrolysis mechanism.
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Guo SG, Huang ZH, Wei MH, Liu YJ, Zhao JW, Sheng SR. Facile synthesis of new aromatic cardo polyamides based on 9,9-bis(4-iodophenyl)xanthene via C–N coupling reaction and properties. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04286-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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5
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Khaki D, Amininasab SM, Namazi H. The preparation of novel poly(ether-amide)s based on spiro[fluorene-9,9′-xanthene] and a polyamide/polymer-coated ZnO nanocomposite: thermal, optical, biological, and methylene blue dye adsorption attributes. Polym Chem 2022. [DOI: 10.1039/d1py01376a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Novel thermostable, photoactive, and solvable polyamides containing fluorene and xanthene groups were synthesized, as was a ZnO-based composite. These compounds were used as antibacterial and anticancer agents and as absorbents to remove MB dye.
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Affiliation(s)
- Diyari Khaki
- Research Laboratory of Dendrimers and Nanopolymers, Faculty of Chemistry, University of Tabriz, PO Box 51666, Tabriz, Iran
| | - S. Mojtaba Amininasab
- Polymer Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj 66177-15175, Iran
| | - Hassan Namazi
- Research Laboratory of Dendrimers and Nanopolymers, Faculty of Chemistry, University of Tabriz, PO Box 51666, Tabriz, Iran
- Research Center for Pharmaceutical Nanotechnology (RCPN), Tabriz University of Medical Science, Tabriz, Iran
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Chen WY, Wei MH, Liu XL, Liu YJ, Sheng SR. Synthesis and characterization of novel fluorinated polyamides bearing tetraphenyl imidazole moieties. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.2013729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Wen-Yue Chen
- Key Laboratory of Functional Small Organic Molecule of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Mei-Hong Wei
- Key Laboratory of Functional Small Organic Molecule of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Xiao-Ling Liu
- Key Laboratory of Functional Small Organic Molecule of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Yong-Jun Liu
- Key Laboratory of Functional Small Organic Molecule of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Shou-Ri Sheng
- Key Laboratory of Functional Small Organic Molecule of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, China
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Ghorai A, Roy S, Das S, Komber H, Ghangrekar MM, Voit B, Banerjee S. Preparation of Sulfonated Polytriazoles with a Phosphaphenanthrene Unit via Click Polymerization: Fabrication of Membranes and Properties Thereof. ACS APPLIED POLYMER MATERIALS 2021. [DOI: 10.1021/acsapm.1c00600] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
| | | | | | - Hartmut Komber
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse. 6, 01069 Dresden, Germany
| | | | - Brigitte Voit
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse. 6, 01069 Dresden, Germany
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Jin K, Sun Q, Feng Y, Guo J, Wang C. High-performance polymers adapted to facile melt processing through structure design of benzocyclobutene-containing precursors. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110445] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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9
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Fabrication, morphological, structural and electrochemical characterization of sulfonated polyimide/clay-based hybrid nanocomposite membranes for energy application. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-020-02306-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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10
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Bera D, Chatterjee R, Banerjee S. Aromatic polyamide nonporous membranes for gas separation application. E-POLYMERS 2021. [DOI: 10.1515/epoly-2021-0016] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Polymer membrane-based gas separation is a superior economical and energy-efficient separation technique over other conventional separation methods. Over the years, different classes of polymers are investigated for their membrane-based applications. The need to search for new polymers for membrane-based applications has been a continuous research challenge. Aromatic polyamides (PAs), a type of high-performance materials, are known for their high thermal and mechanical stability and excellent film-forming ability. However, their insolubility and processing difficulty impede their growth in membrane-based applications. In this review, we will focus on the PAs that are investigated for membrane-based gas separations applications. We will also address the polymer design principal and its effects on the polymer solubility and its gas separation properties. Accordingly, some of the aromatic PAs developed in the authors’ laboratory that showed significant improvement in the gas separation efficiency and placed them in the 2008 Robeson upper bound are also included in this review. This review will serve as a guide to the future design of PA membranes for gas separations.
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Affiliation(s)
- Debaditya Bera
- Materials Science Centre, Indian Institute of Technology Kharagpur , Kharagpur 721302 , India
| | - Rimpa Chatterjee
- Materials Science Centre, Indian Institute of Technology Kharagpur , Kharagpur 721302 , India
| | - Susanta Banerjee
- Materials Science Centre, Indian Institute of Technology Kharagpur , Kharagpur 721302 , India
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11
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Han X, Jin S, Zhang J, Yue C, Zhang H, Pang J, Jiang Z. Novel poly(ether sulfone) with tetraphenyl bipyrimidine unit for gas separation. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Jiang C, Wang C, Yu B, Zhao X, Li J, Ren Q. New soluble polyamides with high transparence and improved gas separation properties. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2020.1821710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Cairong Jiang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou, China
| | - Chenyi Wang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou, China
| | - Bin Yu
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou, China
| | - Xiaoyan Zhao
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou, China
| | - Jian Li
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou, China
| | - Qiang Ren
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou, China
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Chatterjee R, Ganesh Kumar A, Nikiforov R, Ryzhikh V, Belov N, Padmanabhan V, Yampolskii Y, Banerjee S. Novel semi-fluorinated poly(ether imide)s with benzyl ether side groups: Synthesis, physicochemical characterization, gas transport properties and simulation. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109879] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Zhang ZY, Pan Y, Zhang XL, Zhou YT, Liu XL. Novel soluble and heat-resistant polyamides derived from 4-(4-diphenylphosphino) phenyl-2,6-bis(4-aminophenyl)pyridine and various aromatic dicarboxylic acids. HIGH PERFORM POLYM 2020. [DOI: 10.1177/0954008320910807] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
New diamine, 4-(4-diphenylphosphino)phenyl-2,6-bis(4-aminophenyl)pyridine, was prepared, and the related polyamides (PAs) bearing 2,6-diphenylpyridyl units and pendant diphenylphosphinophenyl groups were synthesized by direct polycondensation of this diamine and various aromatic diacids in N-methyl-2-pyrrolidinone (NMP) using triphenyl phosphite and pyridine as condensing agents. The resulting PAs with inherent viscosities of 0.78–1.06 dL g−1 are readily soluble in polar aprotic solvents such as NMP, N, N-dimethylacetamide, and dimethylsulfoxide as well as less polar solvents such as m-cresol and pyridine. All the PAs are amorphous and could be solution-cast into transparent, flexible, and tough films, which have tensile strengths of 68.2–88.8 MPa, tensile moduli of 1.9–2.4 GPa, and elongations at break of 5.4–10.3%. These polymer films also exhibit high optical transparence with the UV cutoff wavelength in the 361–412 nm range. These PAs display glass transition temperatures of 316–332°C, 10% mass loss temperatures of 524–553°C, and more than 48% residues at 800°C in nitrogen, respectively. Their high char yields and good limited oxygen index values ranging from 39 to 44 indicate the prepared PAs show good thermal stability and flame-retardant property.
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Affiliation(s)
- Zi-Yang Zhang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, People’s Republic of China
| | - Yang Pan
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, People’s Republic of China
| | - Xiao-Lan Zhang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, People’s Republic of China
| | - Yu-Ting Zhou
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, People’s Republic of China
| | - Xiao-Ling Liu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, People’s Republic of China
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15
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Structure effect on mechanical and thermal properties in aromatic copolyamides with phenyl substituents. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1900-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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High optical transparency, low dielectric constant, and light color of organosoluble polyamides based on 10,10-bis[4-(4- amino-3-trifluoromethylphenoxy)phenyl]- 9(10H)-anthrone. HIGH PERFORM POLYM 2019. [DOI: 10.1177/0954008319872526] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A new aromatic diamine, 10,10-bis[4-(4-amino-3-trifluoromethylphenoxy)phenyl]-9( 10H)-anthrone (BATFPA), has been synthesized from anthrone via three-step procedure. Low-temperature polycondensation of BATFPA with various aromatic dicarboxylic acid chlorides produced novel fluorinated polyamides with moderate to high inherent viscosities of 0.75–1.03 dL/g while the weight-average molecular weight and number-average molecular weight were in the range of 66,000–74,000 and 37,000–41,000, respectively. Nearly, all the polymers were readily soluble in polar solvents, such as N,N-dimethyl acetamide (DMAc), N-methyl-2-pyrrolidinone, pyridine, and tetrahydrofuran, and afforded transparent, light-colored, and flexible films upon casting from DMAc solvent. These polymers had glass transition temperatures of 249–309°C, 10% weight loss temperatures of 486–517°C, and char yields of 53–61% at 800°C under nitrogen. All polymers were amorphous and their films exhibited tensile strengths of 64–86 MPa, tensile moduli of 1.8–2.2 GPa, and elongation at break of 10–18%. These polymers had dielectric constants ranging from 3.25 to 3.76 (100 Hz), low moisture uptake in the range of 0.72–1.18%, and high transparency with an ultraviolet–visible absorption cutoff wavelength in the 360–378 nm range.
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17
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Zou G, Wang P, Feng W, Ren Z, Ji J. Bio-based transparent polyamide 10T/10I/1012 with high performance. J Appl Polym Sci 2019. [DOI: 10.1002/app.47305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Guangji Zou
- National Engineering Research Center of Engineering Plastics; Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District, Beijing 100190 People's Republic of China
- College of Materials Sciences and Opto-Electronic Technology, University of Chinese Academy of Sciences; 19 Yuquan Road, Shijingshan District, Beijing 100049 People's Republic of China
| | - Pingli Wang
- National Engineering Research Center of Engineering Plastics; Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District, Beijing 100190 People's Republic of China
| | - Wutong Feng
- National Engineering Research Center of Engineering Plastics; Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District, Beijing 100190 People's Republic of China
- College of Materials Sciences and Opto-Electronic Technology, University of Chinese Academy of Sciences; 19 Yuquan Road, Shijingshan District, Beijing 100049 People's Republic of China
| | - Zhonglai Ren
- National Engineering Research Center of Engineering Plastics; Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District, Beijing 100190 People's Republic of China
| | - Junhui Ji
- National Engineering Research Center of Engineering Plastics; Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District, Beijing 100190 People's Republic of China
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Zheng Y, Yang X, Yuan M, Luo J. Synthesis and gas transport properties of novel poly(ether ether ketone)s containing fluorene group. HIGH PERFORM POLYM 2019. [DOI: 10.1177/0954008319832956] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Two novel gas separation membranes (Phenyl(Ph)-poly(ether ether ketone)s (PEEKs) and PEEKs) based on PEEKs with a high fractional free volume were designed and synthesized. The structure and thermodynamic stability of the membranes were investigated using Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, and thermogravimetric analysis. The two membranes, which were determined to be high-molecular weight polymers by gel permeation chromatography, showed good solubility in a weakly polar solvent. The gas transport properties of the Ph-PEEK membranes were investigated for different gases (CO2, O2, CH4, and N2) at 25°C and 1 atm. The Ph-PEEK-3 membrane with the largest free volume had the largest gas permeability coefficient and maintained good selectivity. The effect of operating temperature on the gas permeation of the Ph-PEEK-3 membrane was also investigated, and the maximum permeability of the four single gases was reached at 55°C and 1 atm.
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Affiliation(s)
- Yayun Zheng
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, People’s Republic of China
| | - Xing Yang
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, People’s Republic of China
| | - Meng Yuan
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, People’s Republic of China
| | - Jujie Luo
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, People’s Republic of China
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Padmanabhan V. Polyamides with phosphaphenanthrene skeleton and substituted triphenylamine for gas separation membranes. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.08.064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Chatterjee R, Bisoi S, Kumar AG, Padmanabhan V, Banerjee S. Polyimides Containing Phosphaphenanthrene Skeleton: Gas-Transport Properties and Molecular Dynamics Simulations. ACS OMEGA 2018; 3:13510-13523. [PMID: 31458058 PMCID: PMC6644473 DOI: 10.1021/acsomega.8b01364] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 09/28/2018] [Indexed: 06/01/2023]
Abstract
A series of new semifluorinated polyimide (PI) films with phosphaphenanthrene skeleton were prepared by thermal imidization of poly(amic acid)s derived from a diamine monomer: 1,1-bis[2'-trifluoromethyl-4'-(4″-aminophenyl)phenoxy]-1-(6-oxido-6H-dibenz⟨c,e⟩⟨1,2⟩oxaphosphorin-6-yl)ethane on reaction with four structurally different aromatic dianhydrides. The chemical structures of the polymers were established by Fourier transform infrared and 1H NMR spectroscopy techniques. The polymers showed a good combination of thermal and mechanical properties (T d10 up to 416 °C under synthetic air and tensile strength up to 91 MPa), low dielectric constant (2.10-2.55 at 1 MHz), and T g values as high as 261 °C. Gas permeabilities of these films were investigated for four different gases CO2, O2, N2, and CH4. The PI films showed high gas permeability (P CO2 up to 175 and P O2 up to 64 barrer) with high permselectivity (P CO2 /P CH4 up to 51 and P O2 /P N2 up to 7.1), and the values are better than those of many other similar polymers reported earlier. For the O2/N2 gas pair, the PIs (PI A) surpassed the present upper boundary limit drawn by Robeson. A detailed molecular dynamics (MD) simulation study has been conducted to understand better the gas-transport properties. The effect of phosphaphenanthrene skeleton, its spatial arrangement, and size distribution function of the free volume were studied using molecular dynamics (MD) simulation and the results are correlated with the experimental data.
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Affiliation(s)
- Rimpa Chatterjee
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Soumendu Bisoi
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Anaparthi Ganesh Kumar
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Venkat Padmanabhan
- Department
of Chemical Engineering, Tennessee Technological
University, Cookeville, Tennessee 38505, United States
| | - Susanta Banerjee
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
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21
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Zhu T, Yang X, Zheng Y, He X, Chen F, Luo J. Preparation of poly(ether-block-amide)/poly(amide-co
-poly(propylene glycol)) random copolymer blend membranes for CO2
/N2
separation. POLYM ENG SCI 2018. [DOI: 10.1002/pen.24828] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tengyang Zhu
- College of Materials Science and Engineering; Taiyuan University of Technology; Taiyuan 030024 People's Republic of China
| | - Xing Yang
- College of Materials Science and Engineering; Taiyuan University of Technology; Taiyuan 030024 People's Republic of China
| | - Yayun Zheng
- College of Materials Science and Engineering; Taiyuan University of Technology; Taiyuan 030024 People's Republic of China
| | - Xiaoqi He
- College of Materials Science and Engineering; Taiyuan University of Technology; Taiyuan 030024 People's Republic of China
| | - Feifei Chen
- College of Materials Science and Engineering; Taiyuan University of Technology; Taiyuan 030024 People's Republic of China
| | - Jujie Luo
- College of Materials Science and Engineering; Taiyuan University of Technology; Taiyuan 030024 People's Republic of China
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