Article
Engineering, Chemical
Huarong Yu, Siyuan Shangguan, Haiyang Yang, Hongwei Rong, Fangshu Qu
Summary: In this study, the aging behavior of NIPS-PVDF and TIPS-PVDF membranes was investigated. The NIPS-PVDF membrane experienced more severe aging compared to the TIPS-PVDF membrane. The results provide insights for selecting chemical cleaning strategies and improving the anti-aging characteristics of PVDF membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Suzana Djeljadini, Patrick Bongartz, Michael Alders, Nils Hartmann, Alexander Oing, Christian Cornelissen, Felix Hesselmann, Jutta Arens, Ulrich Steinseifer, John Linkhorst, Matthias Wessling
Summary: A novel fabrication technology involving additive manufacturing and templating has been successfully used to create customized 3D porous polymer monoliths with tailored surface coatings. This method enables the production of complex porous polymer structures that can be applied to various geometries, paving the way for new generation materials with enhanced functionalities.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Polymer Science
Jingcheng Li, Shuai Zhang, Xiaobo Liu
Summary: Poly(arylene ether nitrile) (PEN) is a high-performance engineering plastic with cyano groups as side groups. In this study, PEN copolymer films based on BPA/PP were synthesized and their thermal, mechanical, and dielectric properties were investigated. The results showed that BPA/PP based PEN copolymer films exhibited good mechanical properties, low dielectric constant, and enhanced thermal properties. The introduction of phenolphthalein structure improved the heat resistance of PEN copolymers without deteriorating the dielectric properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Pengfei Zhang, Chuanjie Fang, Saeid Rajabzadeh, Wenyi Liu, Yuandong Jia, Qin Shen, Lei Zhang, Shengyao Wang, Noriaki Kato, Hideto Matsuyama
Summary: This study investigates the effects of PVDF molecular weight and concentration on the characteristics of hollow fiber membranes prepared using the TIPS process. It is found that choosing the appropriate polymer molecular weight and concentration is essential for obtaining a membrane with considerable water permeability stability.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Water Resources
Ting He, Xiaogang Li, Qian Wang, Yue Zhou, Xiaozu Wang, Zhaohui Wang, Naser Tavajohi, Zhaoliang Cui
Summary: In this study, the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate was successfully used as a single solvent in preparing high-performance PVDF membranes through the N-TIPs method. By adjusting the quenching temperature and additive content, PVDF membranes with a narrow pore size distribution and high flux were obtained.
APPLIED WATER SCIENCE
(2022)
Article
Materials Science, Composites
Lili Zhang, Xinghua Zhang, Xinghai Wei, Deqi Jing, Weiguo Su, Shouchun Zhang
Summary: In this study, a hydroxyl-functionalized block co-polyimide was synthesized and used to toughen tetrafunctional epoxy resins, resulting in significantly improved impact strength and tensile strength. This method provides an effective approach for preparing tough tetrafunctional epoxy resins.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Jin Zhou, Yuting Wan, Martien A. Cohen Stuart, Mingwei Wang, Junyou Wang
Summary: Protein-polyelectrolyte coacervation is regulated by factors such as pH, ionic strength, and the properties of the polymers involved. Moderate pH and ionic strength are essential for the formation of coacervate droplets. Excess polyelectrolytes are often needed for full complexation, and polymers with longer chains or primary amine groups and a branched structure have a stronger electrostatic interaction with proteins. Nevertheless, coacervates do not disrupt the protein structure and activity, indicating their safe encapsulation. The principles revealed in this study can guide the development of other protein-based coacervations.
Article
Engineering, Chemical
Yu Ping Su, Lee Nuang Sim, Xin Li, Hans G. L. Coster, Tzyy Haur Chong
Summary: Piezoelectric membrane can potentially lower operation costs compared to vibratory shear-enhanced process. The morphology of PVDF membranes prepared using different solvents affects their dielectric and piezoelectric properties, with PVDF-DMF showing the highest dielectric strength. Electrical poling enhances the piezoelectric properties of the membranes, with noticeable changes in morphology observed.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Ayesha Ilyas, Matthias Mertens, Stijn Oyaert, Ivo F. J. Vankelecom
Summary: Experimental and simulation studies using patterned membranes synthesized via s-NIPS method showed a significant reduction in fouling deposition, increased membrane permeance, delayed cake layer formation, and improved anti-fouling potential. The results suggest promising application of patterned PVDF membranes for filtration due to higher effective surface area, reduced fouling, and increased membrane porosity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Composites
Jian Li, Jing Sun, Lulu Ren, Ting Lei, Juan Li, Jinbo Jin, Shanshan Luo, Shuhao Qin, Chengtao Gao
Summary: The non-solvent induced phase separation technology was used to develop modified polyvinylidene fluoride (PVDF) ultrafiltration (UF) membranes with titanium dioxide (TiO2)-hydroxyapatite (HAP) composite. The addition of 0.3% TiO2-HAP composite resulted in improved membrane performance, with increased pure water flux and reduced rejection rate of bovine serum albumin (BSA) and water contact angle. The composite membranes also showed stable flux after multiple tests, indicating good stability. These findings suggest that TiO2-HAP composite has great potential in water treatment applications.
POLYMER COMPOSITES
(2023)
Article
Engineering, Chemical
Ying-Chieh Hung, Chieh-Ming Hsieh, Hiroshi Machida, Shiang-Tai Lin, Yusuke Shimoyama
Summary: This study investigates the phase behavior of phase separation solvents before and after CO2 absorption using a predictive model. The results reveal that the hydrophilicity of amines affects the molecular interactions and miscibility of the solvents. The study suggests that amines with balanced interactions with water and glycol ether are potential candidates for CO2 capture phase separation solvents.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Engineering, Chemical
Hao-Ren Yang, Yueh-Han Huang, Chih-Feng Wang, Tai-Shung Chung
Summary: This study explores the use of TEP as a green solvent to fabricate superhydrophobic PVDF membranes, which exhibit higher flux in treating high salinity solutions.
Article
Chemistry, Physical
Gajula Prasad, Jun-Wei Liang, Wei Zhao, Yingbang Yao, Tao Tao, Bo Liang, Sheng-Guo Lu
Summary: The study examined the impact of a DMF/acetone solvent system and spinning medium on membrane morphology and structure-property relationship. It was found that the solvent uptake percentage in a water medium was significantly higher than in an air medium, leading to improved performance compared to commercial polyethylene membranes.
JOURNAL OF MATERIOMICS
(2021)
Article
Biochemistry & Molecular Biology
Duc-Trung Tran, Jean-Pierre Mericq, Julie Mendret, Stephan Brosillon, Catherine Faur
Summary: This study investigated the effects of preparation temperature on the formation process and properties of PVDF-TiO2 membranes. An increase in preparation temperature led to changes in membrane morphology, increased porosity, improved permeate flux, but decreased mechanical strength. Factors such as permeability, porosity, thermal and mechanical properties, and compression behavior were all influenced by the preparation temperature.
Article
Engineering, Environmental
Dan Guo, Xinpan Luo, Lu Cai, Ngie Hing Wong, Jaka Sunarso, Nana Li
Summary: In this study, PVDF membranes with enhanced mechanical strength, water flux, and electrical conductivity were prepared using conductive knitted fabrics as the supporting matrix. The composite membranes exhibited higher tensile strength and water flux compared to PVDF membranes. This research highlights the potential of developing reinforced hydrophobic membranes using conductive knitted fabric.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Chemical
Hao Zhang, Xiaolong Lu, Zhiyu Liu, Zhong Ma, Song Wu, Zhendong Li, Xiao Kong, Juanjuan Liu, Chunrui Wu
JOURNAL OF MEMBRANE SCIENCE
(2018)
Article
Engineering, Chemical
Xiao Kong, Yuke Sun, Xiaolong Lu, Chunrui Wu
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Engineering, Chemical
Xiao Kong, Guiming Shu, Xiaolong Lu, Chunrui Wu, Yu Gai
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Engineering, Chemical
Juanjuan Liu, Guiming Shu, Xiaolong Lu, Ke Li, Xiao Kong, Shuyun Zheng, Ronghua Ma, Tao Li
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Engineering, Chemical
Ronghua Ma, Xiaolong Lu, Xiao Kong, Shuyun Zheng, Shaozhe Zhang, Sihua Liu
Summary: This study successfully achieved controllable positive-charged modification of PVDF-CTFE membrane surface using DETA, improving membrane performance significantly and providing a new idea for modification of chlorinated polymers. The modified positive-charged membrane showed excellent positive-charged effect, high N element content, and reduced water contact angle, indicating enhanced resistance to positively charged pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Juanjuan Liu, Xiaolong Lu, Guiming Shu, Feifei Ni, Ke Li, Xiao Kong, Shuyun Zheng, Ronghua Ma, Tao Li, Hui Liu, Jun Yang
Summary: A novel bifunctional blood purification membrane structure is proposed to remove toxins safely by filtration-adsorption. The membrane has excellent biocompatibility on the internal surface and can adsorb toxins on the external surface. This membrane design provides a new blood purification treatment for clinical hepatic failure.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Xiao Kong, Xiaolong Lu, Kai Ren
Summary: Increasing the molecular weight and addition contents of pore forming agents have been acknowledged as effective ways to improve permeability in membranes fabricated via nonsolvent induced phase separation (NIPS). However, these techniques negatively impact the overall pore size and mechanical strength of the resulting membranes. Facilitating the mutual diffusion of water (coagulant) and dope solutions (MDWDS) during NIPS is the key to obtain porous membranes with high permeability.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Engineering, Chemical
Juanjuan Liu, Xiaolong Lu, Guiming Shu, Ke Li, Shuyun Zheng, Xiao Kong, Tao Li, Jun Yang
Summary: A PVDF macro-pore plasma separation membrane was successfully prepared using a facile strategy based on macromolecular interaction. The membrane exhibited higher plasma separation properties and excellent hemocompatibility, indicating its great potential application.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Juanjuan Liu, Xiaolong Lu, Guiming Shu, Ke Li, Xiao Kong, Shuyun Zheng, Tao Li, Jun Yang
Summary: A novel heparin/PEI dual-sided functional PVDF plasma separation membrane structure is proposed. Bilirubin is removed using this membrane via one-step anti-coagulation-adsorption. The inner side of the membrane prolongs clotting time while the outer side adsorbs and removes bilirubin.
JOURNAL OF MEMBRANE SCIENCE
(2023)
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
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)