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Li H, Qian X, Mohanram H, Han X, Qi H, Zou G, Yuan F, Miserez A, Liu T, Yang Q, Gao H, Yu J. Self-assembly of peptide nanocapsules by a solvent concentration gradient. NATURE NANOTECHNOLOGY 2024:10.1038/s41565-024-01654-w. [PMID: 38671050 DOI: 10.1038/s41565-024-01654-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 03/12/2024] [Indexed: 04/28/2024]
Abstract
Biological systems can create materials with intricate structures and specialized functions. In comparison, precise control of structures in human-made materials has been challenging. Here we report on insect cuticle peptides that spontaneously form nanocapsules through a single-step solvent exchange process, where the concentration gradient resulting from the mixing of water and acetone drives the localization and self-assembly of the peptides into hollow nanocapsules. The underlying driving force is found to be the intrinsic affinity of the peptides for a particular solvent concentration, while the diffusion of water and acetone creates a gradient interface that triggers peptide localization and self-assembly. This gradient-mediated self-assembly offers a transformative pathway towards simple generation of drug delivery systems based on peptide nanocapsules.
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Affiliation(s)
- Haopeng Li
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, China
| | - Xuliang Qian
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
| | - Harini Mohanram
- School of Biological Sciences, Division of Structural and Computational Biology, Nanyang Technological University, Singapore, Singapore
| | - Xiao Han
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Huitang Qi
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, China
| | - Guijin Zou
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
- Institute of High Performance Computing, A*STAR, Singapore, Singapore
| | - Fenghou Yuan
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, China
| | - Ali Miserez
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
- Biological and Biomimetic Material Laboratory (BBML), Center for Sustainable Materials (SusMat), School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Tian Liu
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, China.
| | - Qing Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.
- Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China.
| | - Huajian Gao
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore.
- Institute of High Performance Computing, A*STAR, Singapore, Singapore.
- Mechano-X Institute, Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing, China.
| | - Jing Yu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.
- Institute for Digital Molecular Analytics and Science, Nanyang Technological University, Singapore, Singapore.
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2
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Xie M, Xiao GY, Song ZG, Lu YP. The Formation Process and Mechanism of the 3D Porous Network on the Sulfonated PEEK Surface. ACS APPLIED MATERIALS & INTERFACES 2024; 16:13585-13596. [PMID: 38445618 DOI: 10.1021/acsami.4c00055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
A three-dimensional (3D) porous network can be prepared on the PEEK surface by sulfonation with enhanced osseointegration and antibacterial properties. However, few studies have been conducted on the formation mechanism of a 3D porous network. In this work, the surface and cross-sectional morphologies, chemical compositions, functional groups, surface wettability, and crystalline states of sulfonated PEEK were investigated at different sulfonation times and coagulant concentrations. The results show that the number of nodular structures and broken fibers on the sulfonated PEEK surface as well as the size of macrovoids in the cross sections increase with increasing sulfonation times when water is used as a coagulant. In contrast, dilute sulfuric acid as a coagulant can inhibit the formation of surface porous structures and macrovoids in the cross sections. Moreover, all of the sulfonated PEEK samples have the same chemical compositions but exhibit better hydrophilicity as the number of microsized pores decreases. It is proposed that non-solvent-induced phase separation (NIPS) occurs during the sulfonation process, and the formation mechanism of surface and cross-sectional morphologies is discussed. Furthermore, it is assumed that the air is trapped in the microsized pores, leaving the surface of the 3D porous network in the Cassie-wetting state. All of these preliminary results throw light on the nature of the sulfonation process and may guide further modification of the structures of sulfonated PEEK.
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Affiliation(s)
- Ming Xie
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
- School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Gui-Yong Xiao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
- School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Zhi-Gang Song
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
- School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Yu-Peng Lu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
- School of Materials Science and Engineering, Shandong University, Jinan 250061, China
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3
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Ahmad T, Rehman LM, Al-Nuaimi R, de Levay JPBB, Thankamony R, Mubashir M, Lai Z. Thermodynamics and kinetic analysis of membrane: Challenges and perspectives. CHEMOSPHERE 2023; 337:139430. [PMID: 37422221 DOI: 10.1016/j.chemosphere.2023.139430] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/18/2023] [Accepted: 07/04/2023] [Indexed: 07/10/2023]
Abstract
The ultimate structure of the membrane is determined using two important effects: (i) thermodynamic effect and (ii) kinetic effect. Controlling the mechanism of kinetic and thermodynamic processes in phase separation is essential for enhancing membrane performance. However, the relationship between system parameters and the ultimate membrane morphology is still largely empirical. This review focuses on the fundamental ideas behind thermally induced phase separation (TIPS) and nonsolvent-induced phase separation (NIPS) methods, including both kinetic and thermodynamic elements. The thermodynamic approach to understanding phase separation and the effect of different interaction parameters on membrane morphology has been discussed in detail. Furthermore, this review explores the capabilities and limitations of different macroscopic transport models used for the last four decades to explore the phase inversion process. The application of molecular simulations and phase field to understand phase separation has also been briefly examined. Finally, it discusses the thermodynamic approach to understanding phase separation and the consequence of different interaction parameters on membrane morphology, as well as possible directions for artificial intelligence to fill the gaps in the literature. This review aims to provide comprehensive knowledge and motivation for future modeling work for membrane fabrication via new techniques such as nonsolvent-TIPS, complex-TIPS, non-solvent assisted TIPS, combined NIPS-TIPS method, and mixed solvent phase separation.
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Affiliation(s)
- Tausif Ahmad
- Advanced Membranes and Porous Materials Centre, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia.
| | - Lubna M Rehman
- Advanced Membranes and Porous Materials Centre, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Reham Al-Nuaimi
- Advanced Membranes and Porous Materials Centre, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Jean-Pierre Benjamin Boross de Levay
- Advanced Membranes and Porous Materials Centre, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Roshni Thankamony
- Advanced Membranes and Porous Materials Centre, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Muhammad Mubashir
- Advanced Membranes and Porous Materials Centre, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Zhiping Lai
- Advanced Membranes and Porous Materials Centre, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia.
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4
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Mousavi SM, Raveshiyan S, Amini Y, Zadhoush A. A critical review with emphasis on the rheological behavior and properties of polymer solutions and their role in membrane formation, morphology, and performance. Adv Colloid Interface Sci 2023; 319:102986. [PMID: 37657189 DOI: 10.1016/j.cis.2023.102986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 08/14/2023] [Accepted: 08/18/2023] [Indexed: 09/03/2023]
Abstract
Considering the importance of asymmetric membrane morphology in controlling the performance of various membrane systems as well as the rapid development of membrane technologies in different industries, the control of membrane manufacturing processes and effective parameters is considered an outstanding subject. Therefore, it seems that investigating the rheological properties of polymer solutions, including gelation behavior, viscoelasticity, and their effect on membrane formation, as well as the morphological structure of membranes, such as hollow fiber and flat sheet membranes, is a requirement for the production of asymmetric membranes with desirable properties. One of the most widely used techniques for the preparation of asymmetric membranes is phase separation. Its two main mechanisms are liquid-liquid demixing and solid-liquid demixing, which can affect the morphology of the membranes in the membrane formation process. Therefore, the membrane morphology can be greatly influenced by controlling the phase separation in the early stages. In this study, an attempt has been made to investigate the rheological behavior of polymer solutions and other factors during the membrane fabrication process, affecting the morphological structure of membranes. The principles governing the rheology of polymer solutions, such as shear, elongation, viscosity, and viscoelasticity have a vital role in determining the membrane morphology and separation performance. Due to the interaction of the rheology of polymer solutions and phase separation, the effects of changes in the rheological properties of the phase separation and the formation of membranes with different structures and morphologies are studied. Furthermore, in addition to the analysis of the effect of the relaxation time and gelation mechanisms, discussions are provided for the determination of the final membrane morphology considering the competition between the domain growth and gelation rates. Finally, the effect of controlling the rheological behavior and phase separation on the membrane structure and performance was investigated in several membrane applications.
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Affiliation(s)
| | - Saba Raveshiyan
- Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
| | - Younes Amini
- Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, Tehran, Iran.
| | - Ali Zadhoush
- Department of Textile Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
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5
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Phase Equilibria and Structure Formation in the Polylactic-co-Glycolic Acid/Tetraglycol/Water Ternary System. Polymers (Basel) 2023; 15:polym15051281. [PMID: 36904522 PMCID: PMC10007394 DOI: 10.3390/polym15051281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
This paper concerns a detailed study of the phase separation and structure formation processes that occur in solutions of highly hydrophobic polylactic-co-glycolic acid (PLGA) in highly hydrophilic tetraglycol (TG) upon their contact with aqueous media. In the present work, cloud point methodology, high-speed video recording, differential scanning calorimetry, and both optical and scanning electron microscopy were used to analyze the behavior of PLGA/TG mixtures differing in composition when they are immersed in water (the so-called "harsh" antisolvent) or in a nonsolvent consisting of equal amounts of water and TG (a "soft" antisolvent). The phase diagram of the ternary PLGA/TG/water system was designed and constructed for the first time. The PLGA/TG mixture composition with which the polymer undergoes glass transition at room temperature was determined. Our data enabled us to analyze in detail the structure evolution process taking place in various mixtures upon their immersion in "harsh" and "soft" antisolvent baths and gain an insight into the peculiarities of the structure formation mechanism active in the course of antisolvent-induced phase separation in PLGA/TG/water mixtures. This provides intriguing opportunities for the controlled fabrication of a wide variety of bioresorbable structures-from polyester microparticles, fibers, and membranes to scaffolds for tissue engineering.
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6
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Fang S, Tang H, Wang M, Xu Z, Li N. The antifouling and separation performance of an ultrafiltration membrane derived from a novel amphiphilic copolymer containing a crown ether. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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7
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Su YL, Beltsios KG, Su JF, Cheng LP. Preparation of poly(vinyl alcohol-co-ethylene) hollow fiber membranes for high-flux ultrafiltration applications. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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8
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A novel polysulfate hollow fiber membrane with antifouling property for ultrafiltration application. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Basko A, Pochivalov K. Current State-of-the-Art in Membrane Formation from Ultra-High Molecular Weight Polyethylene. MEMBRANES 2022; 12:membranes12111137. [PMID: 36422129 PMCID: PMC9696610 DOI: 10.3390/membranes12111137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 05/12/2023]
Abstract
One of the materials that attracts attention as a potential material for membrane formation is ultrahigh molecular weight polyethylene (UHMWPE). One potential material for membrane formation is ultrahigh molecular weight polyethylene (UHMWPE). The present review summarizes the results of studies carried out over the last 30 years in the field of preparation, modification and structure and property control of membranes made from ultrahigh molecular weight polyethylene. The review also presents a classification of the methods of membrane formation from this polymer and analyzes the conventional (based on the analysis of incomplete phase diagrams) and alternative (based on the analysis of phase diagrams supplemented by a boundary line reflecting the polymer swelling degree dependence on temperature) physicochemical concepts of the thermally induced phase separation (TIPS) method used to prepare UHMWPE membranes. It also considers the main ways to control the structure and properties of UHMWPE membranes obtained by TIPS and the original variations of this method. This review discusses the current challenges in UHMWPE membrane formation, such as the preparation of a homogeneous solution and membrane shrinkage. Finally, the article speculates about the modification and application of UHMWPE membranes and further development prospects. Thus, this paper summarizes the achievements in all aspects of UHMWPE membrane studies.
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10
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Pervin R, Ghosh P, Basavaraj MG. Influence of initial composition of casting solution on morphology of porous thin polymer films produced via phase separation. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03325-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Bridge AT, Santoso MS, Maisano JA, Hillsley AV, Brennecke JF, Freeman BD. Rapid macrovoid characterization in membranes prepared via nonsolvent-induced phase separation: A comparison between 2D and 3D techniques. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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12
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Yushkin A, Basko A, Balynin A, Efimov M, Lebedeva T, Ilyasova A, Pochivalov K, Volkov A. Effect of Acetone as Co-Solvent on Fabrication of Polyacrylonitrile Ultrafiltration Membranes by Non-Solvent Induced Phase Separation. Polymers (Basel) 2022; 14:4603. [PMID: 36365596 PMCID: PMC9657875 DOI: 10.3390/polym14214603] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 09/28/2023] Open
Abstract
For the first time, the presence of acetone in the casting solutions of polyacrylonitrile (PAN) in dimethylsulfoxide or N-methyl-2-pyrrolidone was studied with regards to thermodynamical aspects of phase separation of polymeric solutions induced by contact with non-solvent (water), formation and performance of porous membranes of ultrafiltration range. The positions of the liquid equilibrium binodals on the phase diagrams of these three-component and pseudo-three-component mixtures were determined. For PAN-N-methyl-2-pyrrolidone-water glass transition curve on a ternary phase diagram was plotted experimentally for the first time. The real-time evolution of the structure of mixtures of PAN with solvents (co-solvents) upon contact with a non-solvent (water) has been studied. The thermodynamic analysis of the phase diagrams of these mixtures, together with optical data, made it possible to propose a mechanism of structure formation during non-solvent induced phase separation of different mixtures. The addition of acetone promotes the formation of a spongy layer on the membrane surface, which decreases the probability of defect formation on the membrane surface and keeps finger-like macrovoids from the underlying layers of the membrane. It was shown that the molecular weight cut-off (MWCO) of the membranes can be improved from 58 down to 1.8 kg/mol by changing the acetone content, while polymer concentration remained the same.
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Affiliation(s)
- Alexey Yushkin
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Prospekt, 119991 Moscow, Russia
| | - Andrey Basko
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 ul. Akademicheskaja, 153045 Ivanovo, Russia
| | - Alexey Balynin
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Prospekt, 119991 Moscow, Russia
| | - Mikhail Efimov
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Prospekt, 119991 Moscow, Russia
| | - Tatyana Lebedeva
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 ul. Akademicheskaja, 153045 Ivanovo, Russia
| | - Anna Ilyasova
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 ul. Akademicheskaja, 153045 Ivanovo, Russia
| | - Konstantin Pochivalov
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Prospekt, 119991 Moscow, Russia
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 ul. Akademicheskaja, 153045 Ivanovo, Russia
| | - Alexey Volkov
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Prospekt, 119991 Moscow, Russia
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13
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Siegel H, Sprockel AJ, Schwenger MS, Steenhoff JM, Achterhuis I, de Vos WM, Haase MF. Synthesis and Polyelectrolyte Functionalization of Hollow Fiber Membranes Formed by Solvent Transfer Induced Phase Separation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:43195-43206. [PMID: 36106768 PMCID: PMC9523618 DOI: 10.1021/acsami.2c10343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 09/07/2022] [Indexed: 06/15/2023]
Abstract
Ultrafiltration membranes are important porous materials to produce freshwater in an increasingly water-scarce world. A recent approach to generate porous membranes is solvent transfer induced phase separation (STrIPS). During STrIPS, the interplay of liquid-liquid phase separation and nanoparticle self-assembly results in hollow fibers with small surface pores, ideal structures for applications as filtration membranes. However, the underlying mechanisms of the membrane formation are still poorly understood, limiting the control over structure and properties. To address this knowledge gap, we study the nonequilibrium dynamics of hollow fiber structure evolution. Confocal microscopy reveals the distribution of nanoparticles and monomers during STrIPS. Diffusion simulations are combined with measurements of the interfacial elasticity to investigate the effect of the solvent concentration on nanoparticle stabilization. Furthermore, we demonstrate the separation performance of the membrane during ultrafiltration. To this end, polyelectrolyte multilayers are deposited on the membrane, leading to tunable pores that enable the removal of dextran molecules of different molecular weights (>360 kDa, >60 kDa, >18 kDa) from a feed water stream. The resulting understanding of STrIPS and the simplicity of the synthesis process open avenues to design novel membranes for advanced separation applications.
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Affiliation(s)
- Henrik Siegel
- Van’t
Hoff Laboratory of Physical and Colloid Chemistry, Department of Chemistry,
Debye Institute for Nanomaterials Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Alessio J. Sprockel
- Van’t
Hoff Laboratory of Physical and Colloid Chemistry, Department of Chemistry,
Debye Institute for Nanomaterials Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Matthew S. Schwenger
- Henry
M. Rowan College of Engineering, Rowan University, Glassboro, New Jersey 08028, United States
| | - Jesse M. Steenhoff
- Van’t
Hoff Laboratory of Physical and Colloid Chemistry, Department of Chemistry,
Debye Institute for Nanomaterials Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Iske Achterhuis
- Faculty
of Science and Technology, Membrane Surface Science, Membrane Science
and Technology, MESA+ Institute of Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Wiebe M. de Vos
- Faculty
of Science and Technology, Membrane Surface Science, Membrane Science
and Technology, MESA+ Institute of Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Martin F. Haase
- Van’t
Hoff Laboratory of Physical and Colloid Chemistry, Department of Chemistry,
Debye Institute for Nanomaterials Science, Utrecht University, 3584 CH Utrecht, The Netherlands
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14
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Vaghasia R, Saini B, Dey A. Synergetic effect of graphene oxide and poly(MMA-co-GMA) copolymer on PSF ultrafiltration membrane for the remediation of potential environmental contaminants. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119346] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Maggay IV, Yu ML, Wang DM, Chiang CH, Chang Y, Venault A. Strategy to prepare skin-free and macrovoid-free polysulfone membranes via the NIPS process. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120597] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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16
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Li W, Chen J, Zhao S, Huang T, Ying H, Trujillo C, Molinaro G, Zhou Z, Jiang T, Liu W, Li L, Bai Y, Quan P, Ding Y, Hirvonen J, Yin G, Santos HA, Fan J, Liu D. High drug-loaded microspheres enabled by controlled in-droplet precipitation promote functional recovery after spinal cord injury. Nat Commun 2022; 13:1262. [PMID: 35273148 PMCID: PMC8913677 DOI: 10.1038/s41467-022-28787-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 01/28/2022] [Indexed: 12/12/2022] Open
Abstract
Drug delivery systems with high content of drug can minimize excipients administration, reduce side effects, improve therapeutic efficacy and/or promote patient compliance. However, engineering such systems is extremely challenging, as their loading capacity is inherently limited by the compatibility between drug molecules and carrier materials. To mitigate the drug-carrier compatibility limitation towards therapeutics encapsulation, we developed a sequential solidification strategy. In this strategy, the precisely controlled diffusion of solvents from droplets ensures the fast in-droplet precipitation of drug molecules prior to the solidification of polymer materials. After polymer solidification, a mass of drug nanoparticles is embedded in the polymer matrix, forming a nano-in-micro structured microsphere. All the obtained microspheres exhibit long-term storage stability, controlled release of drug molecules, and most importantly, high mass fraction of therapeutics (21.8–63.1 wt%). Benefiting from their high drug loading degree, the nano-in-micro structured acetalated dextran microspheres deliver a high dose of methylprednisolone (400 μg) within the limited administration volume (10 μL) by one single intrathecal injection. The amount of acetalated dextran used was 1/433 of that of low drug-loaded microspheres. Moreover, the controlled release of methylprednisolone from high drug-loaded microspheres contributes to improved therapeutic efficacy and reduced side effects than low drug-loaded microspheres and free drug in spinal cord injury therapy. High drug loading improves therapeutic efficacy and reduces side effects in drug delivery. Here, the authors use controlled diffusion of solvents to precipitate drug nanoparticles in polymer particles while the polymer is solidifying and demonstrate the particles for drug delivery in a spinal cord injury model.
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Affiliation(s)
- Wei Li
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Jian Chen
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Shujie Zhao
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Tianhe Huang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutical Science, China Pharmaceutical University, Nanjing, 210009, China
| | - Huiyan Ying
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Claudia Trujillo
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Giuseppina Molinaro
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Zheng Zhou
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Tao Jiang
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Wei Liu
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Linwei Li
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yuancheng Bai
- State Key Laboratory of Natural Medicines, Department of Pharmaceutical Science, China Pharmaceutical University, Nanjing, 210009, China
| | - Peng Quan
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland.,Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Yaping Ding
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Jouni Hirvonen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Guoyong Yin
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland. .,Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, 00014, Finland. .,Department of Biomedical Engineering and W.J. Kolff Institute for Biomedical Engineering and Materials Science, University Medical Center Groningen/University of Groningen, Ant. Deusinglaan 1, 9713 AV, Groningen, The Netherlands.
| | - Jin Fan
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
| | - Dongfei Liu
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland. .,State Key Laboratory of Natural Medicines, Department of Pharmaceutical Science, China Pharmaceutical University, Nanjing, 210009, China. .,Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, 00014, Finland.
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17
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Baig M, Pejman M, Willott JD, Tiraferri A, de Vos WM. Polyelectrolyte Complex Hollow Fiber Membranes Prepared via Aqueous Phase Separation. ACS APPLIED POLYMER MATERIALS 2022; 4:1010-1020. [PMID: 35178524 PMCID: PMC8845049 DOI: 10.1021/acsapm.1c01464] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/29/2021] [Indexed: 05/08/2023]
Abstract
Hollow fiber (HF) membrane geometry is the preferred choice for most commercial membrane operations. Such fibers are conventionally prepared via the non-solvent-induced phase separation technique, which heavily relies on hazardous and reprotoxic organic solvents such as N-methyl pyrrolidone. A more sustainable alternative, i.e., aqueous phase separation (APS), was introduced recently that utilizes water as a solvent and non-solvent for the production of polymeric membranes. Herein, for the first time, we demonstrate the preparation of sustainable and functional HF membranes via the APS technique in a dry-jet wet spinning process. The dope solution comprising poly(sodium 4-styrenesulfonate) (PSS) and polyethyleneimine (PEI) at high pH along with an aqueous bore liquid is pushed through a single orifice spinneret into a low pH acetate buffer coagulation bath. Here, PEI becomes charged resulting in the formation of a polyelectrolyte complex with PSS. The compositions of the bore liquid and coagulation bath were systematically varied to study their effect on the structure and performance of the HF membranes. The microfiltration-type membranes (permeability ∼500 to 800 L·m-2·h-1·bar-1) with complete retention of emulsion droplets were obtained when the precipitation rate was slow. Increasing the concentration of the acetate buffer in the bath led to the increase in precipitation rate resulting in ultrafiltration-type membranes (permeability ∼12 to 15 L·m-2·h-1·bar-1) having molecular weight cut-offs in the range of ∼7.8-11.6 kDa. The research presented in this work confirms the versatility of APS and moves it another step closer to large-scale use.
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Affiliation(s)
- Muhammad
Irshad Baig
- Faculty
of Science and Technology, Membrane Science and Technology, MESA+
Institute for Nanotechnology, University
of Twente, P.O. Box 217, Enschede 7500 AE, The
Netherlands
| | - Mehdi Pejman
- Faculty
of Science and Technology, Membrane Science and Technology, MESA+
Institute for Nanotechnology, University
of Twente, P.O. Box 217, Enschede 7500 AE, The
Netherlands
- Department
of Environment, Land and Infrastructure Engineering (DIATI), Politecnico di Torino, Corso Duca degli Abruzzi 24, Turin 10129, Italy
| | - Joshua D. Willott
- Faculty
of Science and Technology, Membrane Science and Technology, MESA+
Institute for Nanotechnology, University
of Twente, P.O. Box 217, Enschede 7500 AE, The
Netherlands
| | - Alberto Tiraferri
- Department
of Environment, Land and Infrastructure Engineering (DIATI), Politecnico di Torino, Corso Duca degli Abruzzi 24, Turin 10129, Italy
| | - Wiebe M. de Vos
- Faculty
of Science and Technology, Membrane Science and Technology, MESA+
Institute for Nanotechnology, University
of Twente, P.O. Box 217, Enschede 7500 AE, The
Netherlands
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18
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Tang Y, Lin Y, Ford DM, Qian X, Cervellere MR, Millett PC, Wang X. A review on models and simulations of membrane formation via phase inversion processes. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119810] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Li F, Wang X, Chen L, Li Z, Zhang T, Wang T. Efficient development of silk fibroin membranes on liquid surface for potential use in biomedical materials. Int J Biol Macromol 2021; 182:237-243. [PMID: 33836192 DOI: 10.1016/j.ijbiomac.2021.04.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/22/2021] [Accepted: 04/03/2021] [Indexed: 01/11/2023]
Abstract
Silk fibroin (SF) protein is versatile for the application of biomaterials due to its excellent mechanical properties, biocompatibility and biodegradability. However, the efficient way to fabricate SF membranes with special structure is still challenging. Here, we develop an efficient and simple way to create SF membranes on the liquid (i.e. subphase) surface. It is essential to prepare highly concentrated SF solution with low surface tension by dissolving the degummed SF powders in 6% (w/v) LiBr/methanol solution by one step. 95 wt% polyethylene glycol (PEG) 200 and 30 wt% (NH4)2SO4 are the subphases, on which the SF solution spreads quickly, generating nonporous and microporous SF membranes (SFM-1 and SFM-2), respectively. PEG 200 causes more ordered molecular packing (β-sheets) in SFM-1. While Fast diffusion and denaturation of SF on (NH4)2SO4 solution lead to the formation of microporous, water-unstable membrane SFM-2. Both membranes have good transparency, hydrophilicty, and mechanical properties. To fabricate antibacterial biomaterials, we design a composite membrane by SFM-1 and SFM-2 sandwiching a layer of hydroxypropyl trimethylammonium chloride chitosan (HACC) to provide antibacterial functions. The sandwich membrane has good cell viability and antibacterial properties, showing potential use for biomedical materials.
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Affiliation(s)
- Fei Li
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Xin Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Lei Chen
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China; SKL of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China.
| | - Zhi Li
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Tonghua Zhang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Tao Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China.
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20
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Pervin R, Ghosh P, Basavaraj MG. Engineering polymer film porosity for solvent triggered actuation. SOFT MATTER 2021; 17:2900-2912. [PMID: 33587086 DOI: 10.1039/d0sm01772h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report a novel approach for the fabrication of porous polymer films and their self-folding behavior in response to water. In this approach, the poly(vinyl alcohol) (PVA) films of tunable porosity are prepared by direct casting of aqueous PVA solution into a nonsolvent, isopropyl alcohol (IPA). The method developed is simple, efficient and low-cost. The results presented provide a modular route to tune the distribution of pores across the film thickness by varying the volume of nonsolvent and the polymer solution. We show that asymmetric porous polymer films (which consist of pores across a certain thickness of the film in the plane perpendicular to its surface) as well as symmetric porous polymer films (which have pores across the entire film) can be fabricated by this versatile method. The percentage of pores in the polymer film calculated as , where tp is the thickness of the film across which the pores exist and ttotal is the total thickness of the film, can be tuned over a wide range. The emanated porous PVA films are found to show self-folding behaviour in response to water. Our results indicate that the pore architecture in the films significantly enhances the actuation speed. The self-folding originating due to the diffusion of water molecules across the film is observed to occur in a controlled and predictable manner for the films with 60% pores and above. A detailed study of the folding characteristics and actuation speed in relation to folding time is substantiated.
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Affiliation(s)
- Rumiaya Pervin
- Polymer Engineering and Colloid Science Lab, Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India. and Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - Pijush Ghosh
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - Madivala G Basavaraj
- Polymer Engineering and Colloid Science Lab, Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India.
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21
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Bărdacă Urducea C, Nechifor AC, Dimulescu IA, Oprea O, Nechifor G, Totu EE, Isildak I, Albu PC, Bungău SG. Control of Nanostructured Polysulfone Membrane Preparation by Phase Inversion Method. NANOMATERIALS 2020; 10:nano10122349. [PMID: 33256125 PMCID: PMC7760602 DOI: 10.3390/nano10122349] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 12/04/2022]
Abstract
The preparation of membranes from polymer solutions by the phase inversion method, the immersion—precipitation technique has proved since the beginning of obtaining technological membranes the most versatile and simple possibility to create polymeric membrane nanostructures. Classically, the phase inversion technique involves four essential steps: Preparation of a polymer solution in the desired solvent, the formation of the polymer solution film on a flat support, the immersion of the film in a coagulation bath containing polymer solvents, and membrane conditioning. All phase inversion stages are important for the prepared membrane’s nanostructure and have been studied in detail for more than six decades. In this paper, we explored, through an electrochemical technique, the influence of the contact time with the polymer film’s environment until the introduction into the coagulation bath. The system chosen for membrane preparation is polysulfone-dimethylformamide-aqueous ethanol solution (PSf-DMF-EW). The obtained nanostructured membranes were characterized morphologically and structurally by scanning electron microscopy (SEM) and thermal analysis (TA), and in terms of process performance through water permeation and bovine serum albumin retention (BSA). The membrane characteristics were correlated with the polymeric film exposure time to the environment until the contact with the coagulation bath, following the diagram of the electrochemical parameters provided by the electrochemical technique.
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Affiliation(s)
- Cristina Bărdacă Urducea
- Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.B.U.); (I.A.D.); (G.N.)
| | - Aurelia Cristina Nechifor
- Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.B.U.); (I.A.D.); (G.N.)
- Correspondence: (A.C.N.); (E.E.T.)
| | - Ioana Alina Dimulescu
- Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.B.U.); (I.A.D.); (G.N.)
| | - Ovidiu Oprea
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 011061 Bucharest, Romania;
| | - Gheorghe Nechifor
- Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.B.U.); (I.A.D.); (G.N.)
| | - Eugenia Eftimie Totu
- Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.B.U.); (I.A.D.); (G.N.)
- Correspondence: (A.C.N.); (E.E.T.)
| | - Ibrahim Isildak
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, 34210 Esenler-Istanbul, Turkey;
| | - Paul Constantin Albu
- IFIN Horia Hulubei, Radioisotopes & Radiat Metrol Dept DRMR, 30 Reactorului Str, 023465 Magurele, Romania;
| | - Simona Gabriela Bungău
- Faculty of Medicine and Pharmacy, University of Oradea, 1 Universităţii Str., Oradea, 410087 Bihor, Romania;
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22
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Zhang P, Zhang K, Chen X, Dou S, Zhao J, Li Y. Influence of Coagulation Bath Temperature on the Structure and Dielectric Properties of Porous Polyimide Films in Different Solvent Systems. ACS OMEGA 2020; 5:29889-29895. [PMID: 33251424 PMCID: PMC7689915 DOI: 10.1021/acsomega.0c04103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
In this work, the effect of coagulation bath temperature in different solvent systems [1,4-butyrolactone (GBL)/N,N-dimethylacetamide (DMAC)] on the structure and dielectric properties of polyimide (PI) films was investigated for the first time. The solubility parameter was introduced to explain the formation process of porous PI films. The results showed that the changed tendency of the dielectric constant versus temperature is opposite for the single-solvent system and cosolvent system. For a single DMAC and GBL solvent, the dielectric constants of the films decreased with increasing temperature. In contrast, the dielectric constants increased with the increase in temperature for the GBL/DMAC cosolvent system. Moreover, the measured porosities were applied to estimate the dielectric constants of the PI films. This showed that the porosity increased with increasing temperature for a single-solvent system, while it decreased for a cosolvent system. Scanning electron microscopy images suggested that the variation trends are derived from the different influences of the temperature on the structure and morphology. Thus, this study reveals the effect of coagulation bath temperature on the structure and dielectric properties of porous PI films and provides the guidance for the design and optimization of architectures for high-performance porous films.
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Affiliation(s)
- Panpan Zhang
- Taiyuan
University of Science and Technology, Jincheng Campus, Jincheng 048011, People’s Republic
of China
| | - Ke Zhang
- MIIT
Key Laboratory of Critical Materials Technology for New Energy Conversion
and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
| | - Xi Chen
- Center
for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, People’s
Republic of China
| | - Shuliang Dou
- Center
for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, People’s
Republic of China
| | - Jiupeng Zhao
- MIIT
Key Laboratory of Critical Materials Technology for New Energy Conversion
and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
| | - Yao Li
- Center
for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, People’s
Republic of China
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23
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Liu Q, Li Y, Wang H, Gao Y, Zhang X, Zhou G, Yang X. Phenolphthalein polyethersulfone bearing carboxyl groups: Synthesis and its separation-membrane applications. HIGH PERFORM POLYM 2020. [DOI: 10.1177/0954008320952859] [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
A series of phenolphthalein polyethersulfones, containing varying contents of carboxyl groups, were synthesized via SN2 nucleophilic reaction. Structure of the prepared copolymers was confirmed by 1H NMR and FTIR. The phenolphthalein polyethersulfone comprising carboxyl groups exhibited excellent hydrophilicity and mechanical properties in the fabrication of ultrafiltration membrane. The properties of the membrane were measured using scanning electron microscopy and ultrafiltration membrane evaluator. The membrane showed superior ultrafiltration performance with a pure water flux of 399 (L·m− 2·h− 1), which was 1.9 times higher than that of the pristine phenolphthalein polyethersulfone. The pure water flux of the membrane with the pore-forming agent Tween 80 was up to 1082 (L·m− 2·h− 1), and its BSA rejection was up to 97% at 0.1 MPa. This work provided a new resin material with better performance for water treatment membrane.
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Affiliation(s)
- Qifeng Liu
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, China
| | - Yunhui Li
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, China
| | - Honghua Wang
- Division of Energy Materials (DNL22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, Dalian, Liaoning, China
| | - Ying Gao
- Division of Energy Materials (DNL22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, Dalian, Liaoning, China
| | - Xingdi Zhang
- Division of Energy Materials (DNL22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, Dalian, Liaoning, China
| | - Guangyuan Zhou
- Division of Energy Materials (DNL22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, Dalian, Liaoning, China
| | - Xiuyun Yang
- Division of Energy Materials (DNL22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, Dalian, Liaoning, China
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24
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Wang X, Zhang X, Han X, Liu K, Xu C, Hu X, Jin Z. Performance adjustable porous polylactic acid‐based membranes for controlled release fertilizers. J Appl Polym Sci 2020. [DOI: 10.1002/app.49649] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiaosong Wang
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering School of Chemistry and Chemical Engineering, Hefei University of Technology Hefei China
| | - Xu Zhang
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering School of Chemistry and Chemical Engineering, Hefei University of Technology Hefei China
- School of Mechanical Engineering Hefei University of Technology Hefei China
- Anhui Sierte Fertilizer Industry Co., Ltd Xuancheng China
| | - Xiaozhao Han
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering School of Chemistry and Chemical Engineering, Hefei University of Technology Hefei China
| | - Kun Liu
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering School of Chemistry and Chemical Engineering, Hefei University of Technology Hefei China
| | - Chao Xu
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering School of Chemistry and Chemical Engineering, Hefei University of Technology Hefei China
| | - Xianguo Hu
- School of Mechanical Engineering Hefei University of Technology Hefei China
| | - Zhenghui Jin
- Anhui Sierte Fertilizer Industry Co., Ltd Xuancheng China
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25
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Ouradi A, Cherifi N, Nguyen QT, Benaboura A. Preliminary study of the prepared polysulfone/AN69/clay composite membranes intended for the hemodialysis application. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01062-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Valamohammadi E, Behdarvand F, Tofighy MA, Mohammadi T. Preparation of positively charged thin-film nanocomposite membranes based on the reaction between hydrolyzed polyacrylonitrile containing carbon nanomaterials and HPEI for water treatment application. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116826] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Kinetic modeling and simulation of non-solvent induced phase separation: Immersion precipitation of PVC-based casting solution in a finite salt coagulation bath. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122527] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Arif Z, Sethy NK, Mishra PK, Verma B. Development of eco-friendly, self-cleaning, antibacterial membrane for the elimination of chromium (VI) from tannery wastewater. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY : IJEST 2020; 17:4265-4280. [PMID: 32421070 PMCID: PMC7223799 DOI: 10.1007/s13762-020-02753-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/19/2020] [Accepted: 04/17/2020] [Indexed: 06/11/2023]
Abstract
Hydrophobic polyvinylidene fluoride membrane was reformed to the hydrophilic membrane by incorporating synthesized titanium dioxide nanoparticles using Cajanus cajan seed extract. Spectroscopic and microscopic techniques characterized the composite membrane. The X-ray diffraction confirms the anatase phase of titanium dioxide nanoparticles of crystalline size 15.89 nm. The effect of titanium dioxide concentration on the thermodynamical and rheological properties on the polyvinylidene fluoride casting solution was investigated by the triangle phase diagram and viscosity measurement. It was concluded that titanium dioxide introduction caused thermodynamic enhancement, but the impact of rheological hinderance was higher at high concentrations. The polyvinylidene fluoride/titanium dioxide membranes were used as a bi-functional membrane to evaluate the rejection of chromium (VI) from wastewater; then, they were applied as sunlight-active catalyst membrane to reduce the concentrated chromium (VI) to chromium (III) by reduction. It was concluded that at 0.02 wt% of titanium dioxide, the maximum rejection of 85.59% and a% reduction of 92% was achieved with enhanced flux.
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Affiliation(s)
- Z. Arif
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, India
| | - N. K. Sethy
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, India
| | - P. K. Mishra
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, India
| | - B. Verma
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, India
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29
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30
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Krishna R. Highlighting Thermodynamic Coupling Effects in the Immersion Precipitation Process for Formation of Polymeric Membranes. ACS OMEGA 2020; 5:2819-2828. [PMID: 32118125 PMCID: PMC7045869 DOI: 10.1021/acsomega.9b03609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 01/27/2020] [Indexed: 06/10/2023]
Abstract
In the immersion precipitation process for membrane formation, a polymer casting film is placed in contact with a nonsolvent in a coagulation bath; an essential feature of the membrane formation process is the foray into the metastable region of the ternary phase diagram for the nonsolvent/solvent/polymer system. The primary objective of this article is to trace the origins of such forays. The Maxwell-Stefan diffusion formulation is combined with the Flory-Huggins description of phase equilibrium thermodynamics to set up a model for describing the transient equilibration trajectory that is followed in the polymer casting film. Four different systems are analyzed: water/acetone/CA, water/DMF/PVDF, water/NMP/PSF, and water/NMP/PEI (CA = cellulose acetate; PVDF = poly(vinylidene fluoride); PSF = polysulfone; PEI = polyetherimide, DMF = dimethyl formamide; NMP = N-methyl-2-pyrrolidone). The analysis shows that diffusional forays are mainly engendered due to thermodynamic coupling effects; such effects are quantified by the set of thermodynamic factors , where a i , the activity of species i, is dependent on the volume fractions, ϕ i and ϕ j , of both nonsolvent (i) and solvent (j). In regions close to phase transitions, the off-diagonal elements Γ ij (i ≠ j) are often negative and may attain large magnitudes in relation to the diagonal elements Γ ii . Strong thermodynamic coupling effects cause the transient equilibration trajectories to be strongly curvilinear, causing ingress into the metastable region. If thermodynamic coupling effects are ignored, no such ingress occurs. It is also shown that analogous diffusional forays may lead to emulsion formation in partially miscible liquid mixtures.
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31
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Rasool MA, Van Goethem C, Vankelecom IF. Green preparation process using methyl lactate for cellulose-acetate-based nanofiltration membranes. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115903] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Effect of different PVDF and additives on the properties of hollow fiber membranes contactors for CO
2
separation. J Appl Polym Sci 2020. [DOI: 10.1002/app.49013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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A new approach to phase-field model for the phase separation dynamics in polymer membrane formation by immersion precipitation method. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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34
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Cu-BTC Metal−Organic Framework Modified Membranes for Landfill Leachate Treatment. WATER 2019. [DOI: 10.3390/w12010091] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, Cu-BTC (copper(II) benzene-1,3,5-tricarboxylate) metal-organic frameworks (MOFs) were incorporated into the structure of polysulfone (PSf) ultrafiltration (UF) membranes to improve the membrane performance for landfill leachate treatment, whereby different concentrations of Cu-BTC (0.5, 1, 1.5, 2 wt%) were added to the PSf casting solution. The successful incorporation of Cu-BTC MOFs into the modified membranes was investigated by field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray (EDX). The Cu-BTC-modified PSf membranes showed higher performance in terms of flux and rejection, as compared to the neat PSf membrane. For example, the pure water flux (PWF) of neat membrane increased from 111 to 194 L/m2h (LMH) by loading 2 wt% Cu-BTC into the membrane structure, indicating 74% improvement in PWF. Furthermore, the flux of this membrane during filtration of landfill leachate increased up to 15 LMH, which indicated 50% improvement in permeability, as compared to the neat membrane. Finally, the modified membranes showed reasonable antifouling and anti-biofouling properties than the blank membrane.
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35
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Le NL, Pulido BA, Nunes SP. Fabrication of Hollow Fiber Membranes Using Highly Viscous Liquids as Internal Coagulants. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ngoc Lieu Le
- Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Jeddah 23955-6900, Saudi Arabia
- School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City, Quarter 6, Linh Trung
Ward, Thu Duc District, Ho Chi Minh City 700000, Viet Nam
| | - Bruno A. Pulido
- Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Jeddah 23955-6900, Saudi Arabia
| | - Suzana P. Nunes
- Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Jeddah 23955-6900, Saudi Arabia
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Kahrs C, Metze M, Fricke C, Schwellenbach J. Thermodynamic analysis of polymer solutions for the production of polymeric membranes. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111351] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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A Review on Porous Polymeric Membrane Preparation. Part I: Production Techniques with Polysulfone and Poly (Vinylidene Fluoride). Polymers (Basel) 2019; 11:polym11071160. [PMID: 31288433 PMCID: PMC6680680 DOI: 10.3390/polym11071160] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/27/2019] [Accepted: 06/27/2019] [Indexed: 12/18/2022] Open
Abstract
Porous polymeric membranes have emerged as the core technology in the field of separation. But some challenges remain for several methods used for membrane fabrication, suggesting the need for a critical review of the literature. We present here an overview on porous polymeric membrane preparation and characterization for two commonly used polymers: polysulfone and poly (vinylidene fluoride). Five different methods for membrane fabrication are introduced: non-solvent induced phase separation, vapor-induced phase separation, electrospinning, track etching and sintering. The key factors of each method are discussed, including the solvent and non-solvent system type and composition, the polymer solution composition and concentration, the processing parameters, and the ambient conditions. To evaluate these methods, a brief description on membrane characterization is given related to morphology and performance. One objective of this review is to present the basics for selecting an appropriate method and membrane fabrication systems with appropriate processing conditions to produce membranes with the desired morphology, performance and stability, as well as to select the best methods to determine these properties.
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Su Y, Beltsios KG, Cheng L. Phase inversion in reusable baths (PIRBs): A new polymer membrane fabrication method as applied to EVOH. J Appl Polym Sci 2019. [DOI: 10.1002/app.48193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yan‐Lin Su
- Department of Chemical and Materials EngineeringTamkang University New Taipei City 25137 Taiwan
| | | | - Liao‐Ping Cheng
- Department of Chemical and Materials EngineeringTamkang University New Taipei City 25137 Taiwan
- Energy and Opto‐Electronic Materials Research CenterTamkang University New Taipei City 25137 Taiwan
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Tree DR, F Dos Santos L, Wilson CB, Scott TR, Garcia JU, Fredrickson GH. Mass-transfer driven spinodal decomposition in a ternary polymer solution. SOFT MATTER 2019; 15:4614-4628. [PMID: 31025034 DOI: 10.1039/c9sm00355j] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nonsolvent induced phase separation (NIPS) is a widely occuring process used in industrial membrane production, nanotechnology and Nature to produce microstructured polymer materials. A variety of process-dependent morphologies are produced when a polymer solution is exposed to a nonsolvent that, following a period where mass is exchanged, precipitates and solidifies the polymer. Despite years of investigation, both experimental and theoretical, many questions surround the pathways to the microstructures that NIPS can produce. Here, we provide simulation results from a model that simultaneously captures both the processess of solvent/nonsolvent exchange and phase separation. We show that the time it takes the nonsolvent to diffuse to the bottom of the film is an important timescale, and that phase separation is possible at times both much smaller and much larger than this scale. Our results include both one-dimensional simulations of the mass transfer kinetics and two- and three-dimensional simulations of morphologies at both short and long times. We find good qualitative agreement with experimental heuristics, but we conclude that an additional model for the vitrification process will be key for fully explaining experimental observations of microstructure formation.
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Affiliation(s)
- Douglas R Tree
- Chemical Engineering Department, Brigham Young University, Provo, Utah, USA.
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40
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A New Hollow-Fiber Adsorbent Material for Removing Arsenic from Groundwater. J CHEM-NY 2019. [DOI: 10.1155/2019/2715093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
To optimize the arsenic-adsorption efficiency and the mechanical strength of a hollow-fiber-type adsorbent, the optimal condition of polymeric solution was determined as 32 wt.% TiO2 and 17 wt.% polymer. A micropore-sponge form was developed at the slurry-extrusion speed of 2.500 ml/min and the internal coagulant-solution-extrusion speed of 1.250 ml/min, and the arsenic-adsorption efficiency improved. Given the result under conditions in natural groundwater containing various ions, the hollow-fiber-type adsorbent can be applied to real groundwater purification processes.
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41
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Cu2O photocatalyst modified antifouling polysulfone mixed matrix membrane for ultrafiltration of protein and visible light driven photocatalytic pharmaceutical removal. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.029] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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42
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Saini B, Khuntia S, Sinha MK. Incorporation of cross-linked poly(AA-co-ACMO) copolymer with pH responsive and hydrophilic properties to polysulfone ultrafiltration membrane for the mitigation of fouling behaviour. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.11.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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43
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Xiang J, Hua X, Dong X, Cheng P, Zhang L, Du W, Tang N. Effect of nonsolvent additives on PES ultrafiltration membrane pore structure. J Appl Polym Sci 2019. [DOI: 10.1002/app.47525] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jun Xiang
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
- Tianjin Key Laboratory of Marine Resources and Chemistry; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
| | - Xinxin Hua
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
- Tianjin Key Laboratory of Marine Resources and Chemistry; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
| | - Xingfeng Dong
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
- Tianjin Key Laboratory of Marine Resources and Chemistry; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
| | - Penggao Cheng
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
- Tianjin Key Laboratory of Marine Resources and Chemistry; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
| | - Lei Zhang
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
- Tianjin Key Laboratory of Marine Resources and Chemistry; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
| | - Wei Du
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
- Tianjin Key Laboratory of Marine Resources and Chemistry; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
| | - Na Tang
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
- Tianjin Key Laboratory of Marine Resources and Chemistry; Tianjin University of Science & Technology; Tianjin 300457 People's Republic of China
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Cui A, Ni F, Deng S, He J, Shen F, Yang G, Song C, Tian D, Long L, Zhang J. Development of in situ synthesized Y-based nanoparticle/polyethersulfone adsorptive membranes by adjusting the composition of the coagulation bath for enhanced removal of fluoride. RSC Adv 2019; 9:16839-16850. [PMID: 35516394 PMCID: PMC9064419 DOI: 10.1039/c9ra01771b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/21/2019] [Indexed: 11/21/2022] Open
Abstract
The composition of coagulation bath significantly altered the membrane structure, composition and adsorption performance for defluoridation by affecting the phase inversion kinetics.
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Affiliation(s)
- Anan Cui
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
| | - Fan Ni
- Department of Chemical Engineering
- Northwest University for Nationalities
- Lanzhou
- China
| | - Shihuai Deng
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
| | - Jinsong He
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
| | - Fei Shen
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
| | - Gang Yang
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
| | - Chun Song
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
| | - Dong Tian
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
| | - Lulu Long
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
| | - Jing Zhang
- Institute of Ecological and Environmental Sciences
- Sichuan Agricultural University
- Chengdu
- China
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46
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He J, Cui A, Ni F, Deng S, Shen F, Song C, Lou L, Tian D, Huang C, Long L. In situ-generated yttrium-based nanoparticle/polyethersulfone composite adsorptive membranes: Development, characterization, and membrane formation mechanism. J Colloid Interface Sci 2018; 536:710-721. [PMID: 30408691 DOI: 10.1016/j.jcis.2018.10.064] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/17/2018] [Accepted: 10/21/2018] [Indexed: 01/21/2023]
Abstract
In this study, a series of in situ-generated yttrium-based nanoparticle (NP)/polyethersulfone (PES) composite adsorptive membranes were prepared by the phase inversion method for the first time. The Y(NO3)3·6H2O as precursor, uniformly dispersed at the molecular level in casting solution, reacted with OH- in a coagulation bath and ambient CO2 during the phase inversion process. The Y(CO3)0.5(OH)2 NPs were formed in situ and distributed homogeneously in a PES matrix, which was confirmed by X-ray photoelectron spectroscopy (XPS) and Energy Dispersive X-Ray Spectroscopy (EDS) results. The compatibility of the nanocomposite membranes was improved by an in situ preparation method. With the increase in content of Y-based NPs in composite membranes, the surface hydrophilicity and water permeability first increased from M1 to M2, and then slightly decreased from M3 to M5, which was mainly related to membrane structure. From M1 to M5, the demixing way changed from instantaneous demixing to delayed demixing process as a result of thermodynamic enhancement and viscosity hindrance in the phase inversion process. A higher demixing rate led to a structure with large finger-like macro-voids, i.e., M1, whereas a lower demixing rate caused the suppression of finger-like macro-voids, i.e., M5. More importantly, the adsorption study indicated that the nanocomposite adsorptive membranes were stable in the treatment of fluoride-containing water, with no leakage of Y-based NPs from membrane matrix to solution. It is expected that the in situ preparation technique could be used to produce next-generation nanocomposite adsorptive membranes with improved comprehensive properties for application in water treatment.
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Affiliation(s)
- Jinsong He
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Anan Cui
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Fan Ni
- Department of Chemical Engineering, Northwest University for Nationalities, Lanzhou, Gansu 730030, China
| | - Shihuai Deng
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Fei Shen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Chun Song
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Ling Lou
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Dong Tian
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Churui Huang
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Lulu Long
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
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48
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He X, Wang T, Li Y, Chen J, Li J. Fabrication and characterization of micro-patterned PDMS composite membranes for enhanced ethanol recovery. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.06.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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49
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50
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Xu Z, Liao J, Tang H, Efome JE, Li N. Preparation and antifouling property improvement of Tröger's base polymer ultrafiltration membrane. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.05.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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