Article
Engineering, Chemical
Dongdong Kang, Huiju Shao, Guijing Chen, Xiaoliang Dong, Shuhao Qin
Summary: The study investigates the effects of matrix miscibility on membrane microstructure during NIPS process, leading to the development of PVDF/SMANa ultrafiltration membranes with superior performance. This strategy holds promise for large-scale membrane manufacturing.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
George M. Neville, Kerrie A. Morrison, Ella R. Shilliday, James Doutch, Robert Dalgliesh, Gareth J. Price, Karen J. Edler
Summary: This study investigates the effect of end group variations on the solution behavior of SMA copolymers synthesized using RAFT polymerization. It is found that the hydrophobicity and hydrophilicity of the end group influence the self-assembly and nanodisc formation of the copolymers.
Article
Chemistry, Multidisciplinary
George M. Neville, Karen J. Edler, Gareth J. Price
Summary: Fluorescently-labelled variants of poly(styrene-co-maleic acid) have been synthesized by RAFT copolymerization and shown to form nanodiscs when interacting with lipids. These novel copolymers can encapsulate lipids and membrane proteins, making them potentially useful in fluorescence-based biological studies.
Article
Polymer Science
Chuxuan Chen, Can Xu, Jiaxin Zhai, Yuhong Ma, Changwen Zhao, Wantai Yang
Summary: A solvent-free method was developed to prepare uniform SMI microspheres from SMA and gaseous amine, leading to improved thermal properties, enhanced solubility, and superior surface characteristics compared to SMA microspheres.
Article
Engineering, Chemical
Guijing Chen, Yuanyuan Yang, Dongdong Kang, Qingqing Qin, Jinbo Jin, Huiju Shao, Shuhao Qin
Summary: Blending styrene-maleic anhydride copolymer (SMA) with CPVC can improve the performance of ultrafiltration membranes by adjusting microstructures, increasing pure water flux and permeability, reducing irreversible fouling index, and enhancing flux recovery ratio.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Polymer Science
Sagar Bag, Soumyadeep Ghosh, Soumya Paul, Md Ezaz Hasan Khan, Priyadarsi De
Summary: S-MI/MA alternating copolymers, known for their tunable molecular weight, narrow dispersity, and precise chain-end functionality, have recently been discovered to exhibit unprecedented emissive behavior, outperforming traditional fluorophores. They are easy to synthesize, utilize cheap starting materials, can be functionalized post-polymerization, exhibit aqueous solubility, and offer greater cell viability.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Yanna Wu, Jianxian Zeng, Xiaoping Huang, Zhengqiu Yuan, Guoqing Liu, Jie Ding
Summary: A new type of nanofiltration membrane with good separation performance for dyes and salts was successfully fabricated using a combination strategy. The membrane exhibited high permeability for water, reasonable retention for dyes, and satisfactory transport for salts, showing potential for textile wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Polymer Science
Qing Zhang, Yongguang Gao, Baojing Luo, Yan Cui, Shili Shu, Wei Chen, Lei Wang
Summary: Poly(butylene succinate-butylene terephthalate) (PBST) and polylactic acid (PLA) were blended using styrene-maleic anhydride copolymer (PSMA) as a compatibilizer. The addition of PSMA improved the compatibility between PBST and PLA, resulting in enhanced mechanical properties. The blends exhibited shear-thinning behavior and belonged to pseudoplastic non-Newtonian fluids.
Article
Engineering, Chemical
Yu-Hsuan Chiao, Hao-Tung Lin, Micah Belle Marie Yap Ang, Yeit Hann Teow, S. Ranil Wickramasinghe, Yung Chang
Summary: In this study, PVDF surfaces were grafted with poly(GMA-co-SBMA) copolymers to obtain superhydrophilic and superoleophobic membranes. The modified membranes showed excellent fouling resistance and hemocompatibility, as well as improved water permeability. The zwitterionic moiety in the membranes reduced hydrophobic interactions, resulting in reduced fouling and improved antifouling performance. The modified PVDF membranes also exhibited high hemocompatibility and easier flux regeneration compared to pristine membranes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Xiaoliang Dong, Huiju Shao, Jinyan Chang, Shuhao Qin
Summary: This study proposes a simple method to adjust the surface segregation and poreforming ability of a copolymer in composite membranes, and further optimize the membrane microstructure by selecting a second additive. The resulting membranes display excellent water flux and rejection rates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Dong Je Han, Jeong F. Kim, Jong-Chan Lee, Uijin Nam, Young Hoon Cho, Eun-Ho Sohn
Summary: In this study, ionic PVDF membranes with simultaneous antifouling and bactericidal properties were developed to overcome the bio-contamination obstacle in water purification. Two different PVDF-based additives were successfully synthesized and added to PVDF dope solutions to alter the membrane properties. Among the prepared PVDF membranes, the one containing 10% PVDF-MPC/QDMA exhibited optimal performances in terms of both antifouling and bactericidal properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Polymer Science
Hye-Seon Park, Chang-Kook Hong
Summary: An anion exchange membrane of sulfonated poly(styrene-ethylene-butylene-styrene) copolymer (S-SEBS) was prepared using the casting method, and further modified with maleic anhydride (MA) to enhance ionic conducting properties. The modified membranes showed enhanced ionic conductivity with the formation of ion channels, achieving 0.25 S/cm at 100% relative humidity and 72.5% water uptake capacity. The mechanical and chemical properties of the modified SEBS membrane remained robust after modification.
Article
Materials Science, Multidisciplinary
Can Xu, Chuxuan Chen, Jing Jiang, Changwen Zhao, Yuhong Ma, Wantai Yang
Summary: This study reports a strategy to prepare monodisperse styrene-maleic anhydride-isoprene terpolymer microspheres via self-stabilized precipitation polymerization. The prepared microspheres have uniform particle sizes and narrow size distributions. The copolymerization proceeds in an alternating way between the electron donor and electron acceptor monomers, and isoprene is incorporated into the polymer chain through 1,4 addition. The gel fraction of microspheres varies with the feeding ratio of isoprene. The Diels-Alder reaction between maleic anhydride and isoprene can be effectively inhibited by adjusting the amount of initiator or polymerization temperature.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Chemical
Thidarat Khaojanta, Wichaya Kalaithong, Runglawan Somsunan, Patchara Punyamoonwongsa, Anisa Mahomed, Paul D. Topham, Brian J. Tighe, Robert Molloy
Summary: Styrene-maleic acid (SMA) block copolymers with acrylamide (AM) or N,N-dimethylacrylamide (DMA) were synthesized through a 3-step process and hydrolyzed to water-soluble products. The molecular weight was controlled below 10,000 for membrane protein solubilization.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Shihui Li, Ling Cai, Dongmei Cui
Summary: The spontaneous alternating copolymerization of maleic anhydride (MA) and styrene (St) derivatives was investigated using various Lewis acids. With the presence of alkyl aluminum or butyl magnesium, MA-St alternating copolymers with ultra-high molecular weight (M-n <= 166.5x10(4)) and high glass transition temperature (211 degrees C <= T-g <= 216 degrees C) were obtained. The microstructure of the MA-St copolymers was analyzed by H-1 and C-13 NMR spectra. Additionally, the copolymerizations of MA with St derivatives were explored using AlOctyl(3) as an activator in toluene at 50 degrees C.
CHEMISTRY-AN ASIAN JOURNAL
(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)