Article
Engineering, Chemical
Jie Zhao, Jeng Yi Chong, Lei Shi, Rong Wang
Summary: A novel approach was developed to immobilize F127 in PVDF hollow fiber membranes using PTFE particles as a binding agent through the N-TIPS method. The dual functions of F127 in pore formation and surface hydrophilization for PVDF membranes were observed. The membranes showed excellent pure water permeability and tensile strength, demonstrating the potential of the N-TIPS method for tuning membrane pore structure and hydrophilicity using multifunctional additives.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Murong Yang, Haihui Liu, Kaikai Chen, Mianning Wang, Huanhuan Chen, Wei Zhao, Changfa Xiao
Summary: Membrane separation technology is widely used in various fields, especially in water treatment. A study focuses on the preparation of PVDF hollow fiber composite membranes through a green preparation method. The addition of PEO promotes phase separation and improves membrane performance. The prepared membrane shows high water flux, excellent protein rejection, and strong mechanical properties.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Biochemistry & Molecular Biology
Jihyeon Kim, Jinwon Lee, Lindsey B. Bezek, Bumjin Park, Kwan-Soo Lee
Summary: PVDF dual-layer hollow fiber membranes were prepared using TIPS and NIPS methods for water treatment application. The addition of nucleating agent NA11 improved the mechanical strength of the membrane by up to 42%. The thickness of the coating layer affected the porosity and mechanical performance of the membrane, resulting in high durability under harsh processing conditions.
Article
Chemistry, Multidisciplinary
Sie Hao Ding, Pei Ching Oh, Asif Jamil
Summary: In this study, PVDF HFMs were prepared by manipulating air gap intervals during spinning. The results showed that increasing the air gap distance can reduce inner lumen defects, improve CO2 gas permeance and CO2/CH4 ideal selectivity. Therefore, varying the air gap distance is considered a practical approach for better gas separation performance.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Review
Engineering, Chemical
Yuanhui Tang, Yakai Lin, Wenzhong Ma, Xiaolin Wang
Summary: Remarkable success has been achieved in the fabrication and industrialization of PVDF membranes via TIPS method for microfiltration/ultrafiltration applications in water treatment. This article provides a comprehensive overview of the fabrication and development of PVDF microporous membranes, highlighting the advantages of the TIPS method and introducing emerging advanced techniques for commercialization.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Textiles
Baobao Zhao, Quan Yang, Zhen Wang, Chenggong Hu, Quan Feng, Anfang Wei
Summary: The study investigated the effects of pump flux on the structure and performance of BR PVDF hollow fiber membranes, showing good sound absorption properties. The sound absorption performance of woven fabrics were further tested, with plain fabric exhibiting smaller thickness and better acoustical properties.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zhuzhu Shao, Xuan Zhang, Zihan Song, Jingfeng Liu, Xingang Liu, Chuhong Zhang
Summary: This study fabricates PVDF hollow fibers with adjustable wall thickness by using coaxial electrospinning. Simulation analysis shows that enlarging the inner diameter of the hollow fiber increases its effective deformation, resulting in enhanced piezoelectric output, which is consistent with the experimental results. This study is the first to reveal the influence mechanism of morphology regulation on the piezoelectric performance of PVDF hollow fibers from both simulation and experimental aspects. The optimal PVDF hollow fiber piezoelectric energy harvester (PEH) delivers a piezoelectric output voltage of 32.6 V, approximately 3 times that of the solid PVDF fiber PEH. Furthermore, the electrical output of the hollow fiber PEH can be stably stored in secondary energy storage systems to power microelectronics. This study provides an efficient approach for reconciling simulation and tailoring fiber PEH morphology to enhance performances for future self-powered systems.
Article
Materials Science, Multidisciplinary
Xiao Kong, Xiaolong Lu, Juanjuan Liu, Chunrui Wu, Shaozhe Zhang
Summary: Increasing the surfactant surface activity has been found to improve the water flux of polymer hollow fiber membranes significantly, leading to a great increase in the efficiency of ultrafiltration and direct contact membrane distillation. This method, different from conventional approaches, enhances the surface porosity and optimizes pore size distribution without compromising membrane mechanical strength.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Engineering, Chemical
Shang Xiang, Xiuxiu Tang, Saeid Rajabzadeh, Pengfei Zhang, Zhenyu Cui, Hideto Matsuyama
Summary: In this study, PVDF/EVOH blend hollow fiber membranes were fabricated using thermally induced phase separation technology. The surface enrichment of EVOH during the fabrication process improved the hydrophilicity, tensile strength, and water permeability of the membranes. Compared to the pristine membrane, the EVOH blend membrane showed better antifouling properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Polymer Science
Bin Yang, Qinting Chen, Mengya Ding, Yang Pan, Peng Zhang, Shuqing Wang, Jiasheng Qian, Jibin Miao, Ru Xia, Peng Chen, You Shi, Youlei Tu
Summary: PVDF films were prepared via TIPS using diphenyl carbonate as the diluter. The effects of polymer concentration and quenching temperature on the hierarchical morphologies in TIPS films were systematically investigated. Increasing quenching temperature led to larger pore size and porosity in the PVDF films, as well as improved thermal stability and dynamic mechanical thermal property.
JOURNAL OF POLYMER SCIENCE
(2021)
Article
Polymer Science
Guoqing Yi, Jingliang Li, Luke C. Henderson, Weiwei Lei, Lian Du, Shuaifei Zhao
Summary: Thermally conductive polyvinylidene fluoride (PVDF) composites were prepared by incorporating carbon fibers (CFs) with different lengths. The addition of CFs significantly improved the thermal conductivity of PVDF composites, with the highest thermal conductivity achieved when shorter CFs were used. CFs also enhanced the mechanical properties and glass transition temperature of PVDF. This work provides a new method for developing thermally conductive and mechanically stable polymer composites.
Article
Engineering, Chemical
Chi-Yang Tsai, Ying-Ling Liu
Summary: This study addresses the major issues of lithium metal batteries, such as the instability of the lithium and electrolyte interface and lithium dendrite growth, by employing a crosslinked polyimide for preparation of thermally-stable separators. The separators made in this study are effective in preventing lithium dendrite growth and exhibit high stability at high C rates.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Environmental Sciences
Gizem Tuncay, Turker Turken, Ismail Koyuncu
Summary: In this study, braid reinforced membranes were fabricated using two different molecular weights of PVDF polymers. The blending of the polymers improved the membrane performance, resulting in a hydrophilic structure with a smoother surface. The investigation showed that the blend membrane had less adsorption of pollutants and reduced fouling.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Chemistry, Physical
Kyohei Umakoshi, Ralph Rolly Gonzales, Noriaki Kato, Pengfei Zhang, Takahiro Ono, Hideto Matsuyama
Summary: In this study, five different types of polyamide hollow fiber membranes were fabricated via thermally induced phase separation. The membrane morphology and filtration performance were evaluated, and the effects of polymer-solvent compatibility and mass transfer during the process were investigated. The results showed that the compatibility among the polymer, dope diluent, bore fluid, and quenching bath is important to obtain polyamide membranes with outstanding performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Sciences
Dawei Ji, Changfa Xiao, Jian Zhao, Kaikai Chen, Fang Zhou, Yifei Gao, Tai Zhang, Haoyang Ling
Summary: In this study, PVDF loose nanofiltration hollow fiber membranes with a multilayer structure were successfully prepared via a solvent-free process. The membranes were modified with GO and PPy, which improved their hydrophilicity and dye rejection capability while maintaining a low salt rejection rate. The novel preparation strategy showed great potential for accurate dye/salt separation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Chemical
Can Li, Yali Zhao, Gwo Sung Lai, Rong Wang
Summary: The addition of different types of aqueous and organic co-solvents can modify the properties of aromatic polyamide thin-film composite membranes, improving their performance in seawater desalination by enhancing pure water permeability and NaCl rejection.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Xin Li, Can Li, Kunli Goh, Rong Wang, Tzyy Haur Chong
Summary: In this study, a functional interlayer derived from polyelectrolyte-based layer-by-layer self-assembly was used to prepare interlayer engineered organic solvent nanofiltration (OSN) membranes using beta-cyclodextrin as a monomer via interfacial polymerization. The developed membranes exhibited a smoother selective layer, higher crosslinking degree, and improved organic dye rejection compared to interlayer-free OSN membranes. Moreover, the membranes showed competitive permeances towards both polar and nonpolar solvents and could discriminate between dye molecules with similar molecular weights and same charge but different molecular configurations. Additionally, the membranes demonstrated good structural integrity and long-term stability.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Yingqi Xie, Linyan Yang, Xueming Chen, Huihui Zhao, Guomin Cao, Xuesong Li, Lichun Bai, Shujuan Meng, Rong Wang
Summary: This study investigates the performance of TFC NF membranes under dynamic exposure of free chlorine and Fe2+. It was found that chlorine exposure reduces water flux, while the presence of Fe2+ increases water flux and decreases salt rejection. The combination of chlorination, catalytic oxidation, and iron deposition synergistically affects the membrane behavior.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Yu Jie Lim, Gwo Sung Lai, Yali Zhao, Yunqiao Ma, Jaume Torres, Rong Wang
Summary: This study investigates the practicality of a nanochannel-based biomimetic membrane for seawater reverse osmosis desalination. The results show that the optimized membrane has high water permeability and rejection rate under high salt concentration, and can reduce the energy consumption of the membrane unit stage.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Verona Nithya Francis, Jeng Yi Chong, Guoying Yang, Lei Che, Rong Wang
Summary: This study successfully synthesized polyamide-PTFE thin film composite (TFC) membranes with excellent chemical resistance to strong solvents by using polytetrafluomethylene (PTFE) as the substrate and a simple modification and coating technique. These membranes showed high permeabilities and good rejection rates, demonstrating their great potential in molecular separation in harsh solvents.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Josh HuaiXun Lim, Kunli Goh, Daniel Yee Fan Ng, Xu Jiang, Chong Yang Chuah, Jia Wei Chew, Rong Wang
Summary: Rationally designing a scaffold to fractionate the packing of MIL-101(Cr) adsorbent can enhance the adsorption efficiency for wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Huang Teik Lay, Chi Siang Ong, Rong Wang, Jia Wei Chew
Summary: The study demonstrates that the DLVO approximation methods used to predict interfacial foulant-membrane interactions are sensitive to the boundary condition assumptions. Both the Poisson-Boltzmann (P-B) and linear superposition approximation (LSA) equations can quantify electrostatic interaction energy, but the LSA equation provides more accurate predictions in various filtration tests.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Josh HuaiXun Lim, Kunli Goh, Daniel Yee Fan Ng, Jiawei Chew, Rong Wang
Summary: Conventional organic solvent recovery methods are energy-intensive and have large footprints. We have developed a new approach that combines adsorption and membrane processes to address these challenges. By designing a polyacrylonitrile (PAN) electrospun membrane with a hierarchical structure, we are able to improve the efficiency of solvent recovery while maintaining high removal rates.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Yujun Zhang, Jeng Yi Chong, Yali Zhao, Rong Xu, Akihiko Asakawa, Rong Wang
Summary: This study developed a method to fabricate hydrophobic membranes for membrane distillation. The hydrophilic membranes were transformed into hydrophobic through the coating of a polymer called LUMIFLONTM LF-200. The coated membranes showed better performance than commercial membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Yali Zhao, Yuan Liao, Gwo Sung Lai, Yurong Yin, Rong Wang
Summary: A tight polyethersulfone (PES) -based ultrafiltration (UF) membrane was fabricated to separate dye and salt in textile wastewater using a polyion complex assisted phase inversion method. The resulting membrane had a nonporous skin layer comprising of polyion complex and enriched sulfonated polysulfone (SPSF), which resulted in a smaller effective pore radius compared to the reference membrane prepared without using polyion complex assisted phase inversion.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Yurong Yin, Yali Zhao, Can Li, Rong Wang
Summary: In this study, a positively charged hollow fiber nanofiltration (NF) membrane was developed for water soften and heavy metal ions removal using a double interfacial polymerization (IP) method. The membrane was fabricated by conducting IP reactions on a polyethersulfone (PES) hollow fiber substrate, followed by a secondary reaction to increase the positive charge density on the membrane surface. The optimized membrane exhibited high rejection rates for MgCl2, Cu2+, and Zn2+, while maintaining a good water permeability.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Ningyuan Chen, Jie Zhao, Lei Shi, Atsushi Goto, Rong Wang
Summary: The use of water-insoluble diluents in the thermally induced phase separation (TIPS) process can eliminate the effect of diluent outflow, while the addition of hydrophilic non-solvents can improve the surface porosity and permeability of polyvinylidene fluoride ultrafiltration membranes. The study also found that the simultaneous addition of both types of additives can significantly enhance the membrane's permeability.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Review
Chemistry, Physical
Yu Jie Lim, Kunli Goh, Atsushi Goto, Yanli Zhao, Rong Wang
Summary: This article reviews the advances in adsorptive materials and technologies for uranium and lithium extraction from seawater and provides an outlook on future developments. Nanotechnology has the potential to enhance the extraction abilities, although the low concentrations of uranium and lithium in seawater present challenges. The main challenges highlighted in this article include the selectivity against competing ions and long-term stability against marine biofouling.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Chemical
Can Li, Gwo Sung Lai, Yali Zhao, Rong Wang
Summary: This study presents the design of a seawater reverse osmosis membrane with powerful boron removal competence by utilizing aliphatic amines. The membrane showed improved rejection of neutral boron molecules and maintained high salt rejection and water permeability.
JOURNAL OF MEMBRANE SCIENCE LETTERS
(2023)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)