Membranes最新文献_第2页

β-FeOOH-Loaded Polydopamine-Modified Halloysite Nanotubes as a Catalytic Interlayer for Enhanced Water Dissociation in Bipolar Membranes. 负载β- feoh -聚多巴胺修饰的高岭土纳米管作为双极膜中增强水解离的催化中间层。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-09-10 DOI: 10.3390/membranes16090296

Haotian Wang, Rui Yang, Jie Wang, Kui Lou, Yunshuang Fan

{"title":"β-FeOOH-Loaded Polydopamine-Modified Halloysite Nanotubes as a Catalytic Interlayer for Enhanced Water Dissociation in Bipolar Membranes.","authors":"Haotian Wang, Rui Yang, Jie Wang, Kui Lou, Yunshuang Fan","doi":"10.3390/membranes16090296","DOIUrl":"10.3390/membranes16090296","url":null,"abstract":"Efficient interfacial water dissociation is essential for reducing the operating voltage of bipolar membranes (BPMs), whereas aggregation and nonuniform distribution of nanoscale catalysts can limit active-site utilization. In this study, polydopamine-modified halloysite nanotubes (PDA@HNTs) were used as a support for β-FeOOH loading to construct a composite catalytic interlayer for BPMs. XRD, FTIR, XPS, SEM, TEM, EDS mapping, contact-angle measurements, electrochemical tests, and bipolar membrane electrodialysis were used to evaluate the interlayer structure and membrane performance. At 50 mA cm-2, the β-FeOOH-PDA@HNTs-BPM exhibited a transmembrane voltage of 0.94 V, compared with 2.15 V for the blank BPM, while the interfacial water-dissociation resistance decreased from 3.873 to 0.980 Ω. After 48 h of continuous operation, the voltage increased only from 0.94 to 0.98 V. In electrodialysis, the membrane achieved a current efficiency of 81.4% and an energy consumption of 3.3 kWh kg-1 after 180 min. PDA-functionalized HNTs promote the dispersion and interfacial association of β-FeOOH, improve interfacial wettability and catalytic-site accessibility, and thereby enhance water dissociation and acid/base production in BPMs.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609662/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural Design of Ceramic Membranes to Mitigate Fouling in Membrane Bioreactors. 缓解膜生物反应器污染的陶瓷膜结构设计。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-09-10 DOI: 10.3390/membranes16090297

Boyang Yu, Chao Fan, Tuo Sun

{"title":"Structural Design of Ceramic Membranes to Mitigate Fouling in Membrane Bioreactors.","authors":"Boyang Yu, Chao Fan, Tuo Sun","doi":"10.3390/membranes16090297","DOIUrl":"10.3390/membranes16090297","url":null,"abstract":"Despite the robust mechanical and chemical stability that make hollow flat-sheet ceramic membranes highly attractive for membrane bioreactors (MBRs), the fundamental relationship between their structural design, specifically pore size and structural symmetry, and biological fouling behavior remains elusive. To decouple the effects of membrane architecture on fouling mechanisms, a series of symmetric and asymmetric hollow flat-sheet alumina membranes were systematically engineered. Symmetric architectures with tunable pore sizes were fabricated by controlling aggregate particle sizes, whereas asymmetric counterparts featuring distinct separation layer thicknesses were developed via a tailored dip-coating process. Long-term operational evaluations treating municipal wastewater uncovered a counterintuitive phenomenon. Asymmetric membranes, despite yielding superior retention, experienced markedly accelerated transmembrane pressure evolution and severe cake layer fouling compared to the symmetric supports. Resistance-in-series analysis coupled with classical filtration models demonstrated that thicker separation layers and larger pore sizes were associated with shifts in the dominant fouling mechanism toward rapid and dense cake layer formation, which significantly exacerbated irreversible biological fouling. Furthermore, advanced spectroscopic and high-throughput sequencing techniques revealed that structurally complex asymmetric layers were associated with shifts in extracellular polymeric substances and specific fouling-associated bacterial phyla at the membrane interface. Ultimately, these findings underscore the necessity of architectural optimization to mitigate biofouling and prolong the operational lifespan of ceramic membranes, highlighting the sustainable advantages of symmetric structures.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609629/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the Characteristics of Heat Transfer and Mass Transfer of Imitation Heart Pulse Membrane Distillation. 仿心脏脉冲膜蒸馏传热传质特性研究。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-09-09 DOI: 10.3390/membranes16090295

Xiaoxuan Zhu, Zhoujun Lan, Zhuang Song, Peng Wang, Derong Duan, Zhongyi Jiang

{"title":"Research on the Characteristics of Heat Transfer and Mass Transfer of Imitation Heart Pulse Membrane Distillation.","authors":"Xiaoxuan Zhu, Zhoujun Lan, Zhuang Song, Peng Wang, Derong Duan, Zhongyi Jiang","doi":"10.3390/membranes16090295","DOIUrl":"10.3390/membranes16090295","url":null,"abstract":"Membrane distillation, a separation technology, has drawn wide attention in industries such as seawater desalination and high-salinity wastewater treatment. However, conventional steady-flow operation suffers from flux decline and membrane fouling, while standard square-wave and sine-wave pulsations provide limited enhancement and stability. To address these issues, this study introduces heartbeat-mimicking pulsatile flow. Its effects on membrane distillation performance were evaluated through comparative (steady vs. pulsatile) experiments, a three-level orthogonal experiment, and tests with various feed solutions and modified membranes. Results show that, under baseline conditions, the heartbeat-mimicking pulsatile flow yielded a 17.5% higher average flux than steady flow, while its conductivity increase was only 25%, far below the 93% for steady flow. In the orthogonal experiment, the heartbeat-mimicking waveform accounted for the largest proportion of total variance (50.1%) among the tested parameters. Furthermore, compared to traditional sine or square waves, this biomimetic pulsation features unique acceleration-rest characteristics, making it highly applicable to complex feed solutions and effectively mitigating membrane fouling. This study aims to identify a new pulsation mode that can overcome the limitations of steady-flow membrane distillation.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609319/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust Yet Conductive Blend Anion Exchange Membranes for Hydrogen Production via PPO Reinforcement of Highly Functionalized Styrene-Butadiene-Based Ionomers. 通过高功能化苯乙烯-丁二烯基离聚体PPO增强制氢的坚固而导电的共混阴离子交换膜。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-09-02 DOI: 10.3390/membranes16090294

Andrea Roggi, Marco Turriani, Margherita Di Pede, Gabriele Agonigi, Antonio Filpi, Claudio Resta, Elisa Guazzelli, Elisa Martinelli

{"title":"Robust Yet Conductive Blend Anion Exchange Membranes for Hydrogen Production via PPO Reinforcement of Highly Functionalized Styrene-Butadiene-Based Ionomers.","authors":"Andrea Roggi, Marco Turriani, Margherita Di Pede, Gabriele Agonigi, Antonio Filpi, Claudio Resta, Elisa Guazzelli, Elisa Martinelli","doi":"10.3390/membranes16090294","DOIUrl":"10.3390/membranes16090294","url":null,"abstract":"Herein, vinylbenzyl chloride (VBC)-grafted styrene-butadiene (SB) copolymers, with high contents of VBC (22-32 mol%), were synthesized and blended with low amounts (n = 3-10 wt%) of unfunctionalized poly(phenylene oxide) (PPO). Being well-known for its great chemical compatibility with polystyrene, PPO was selected as non-conductive, hydrophobic and mechanically robust component to be blended with graft copolymers in order to reduce their water uptake, thus improving their dimensional and mechanical stability after quaternization with trimethylamine. The resulting blend membranes were characterized in terms of thermal, mechanical, and ex situ electrochemical properties. Blend membranes generally presented improved mechanical properties, as well as reduced water uptake with respect to AEMs not containing PPO, while retaining ion conductivity values of 11.3-16.6 mS cm-1, higher than that of a commercial hydrocarbon-based benchmark. Among the investigated blend AEMs, g-VBC-32/PPOn membranes were found to have the highest conductivity values (>15 mS cm-1) and the best trade-off between water uptake, mechanical properties and hydrogen permeability. Overall, these results highlight pristine PPO blending as a cost-effective, simple and scalable route to improve the mechanical and dimensional stability of hydrocarbon-based AEMs.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609407/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Shifting the Redox-Flow Battery Trade-Off with Amine-Crosslinked PVBC Thin-Film Composite Membranes. 用胺交联PVBC薄膜复合膜改变氧化还原液流电池的权衡。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-31 DOI: 10.3390/membranes16090291

Chiari Van Cauter, Maarten Cools, Yun Li, Ivo F J Vankelecom

{"title":"Shifting the Redox-Flow Battery Trade-Off with Amine-Crosslinked PVBC Thin-Film Composite Membranes.","authors":"Chiari Van Cauter, Maarten Cools, Yun Li, Ivo F J Vankelecom","doi":"10.3390/membranes16090291","DOIUrl":"10.3390/membranes16090291","url":null,"abstract":"Redox flow batteries (RFBs) are an interesting option for long-term energy storage. A well-performing membrane sits at the heart of the electrochemical battery cell and should effectively mitigate crossover of active species while minimizing resistance. However, current commercial membranes are rather expensive and demonstrate sub-optimal performance, leading to an extensive search for alternatives. Research on membranes for RFBs has long been dominated by dense ion-exchange membranes and porous membranes, both potentially with fillers. In recent years, increased interest in alternative morphologies such as thin-film composites (TFCs) has ignited new research directions. TFCs consist of a thin dense layer on top of a porous support, aiming to merge the advantages of both. Traditionally, TFCs are made using polyamide top layers. In this paper, a novel chemistry is developed with increased chemical stability for RFBs. Poly(vinylbenzyl chloride) is crosslinked interfacially with a diamine, demonstrating for the first time the potential of support-mediated interfacial crosslinking with two immiscible solvents. Optimization of the support, amine crosslinker, reaction time and synthesis procedure allowed a shift of the trade-off between vanadium crossover and proton transport, highlighting the opportunities for this promising TFC chemistry.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609740/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of PVA/TiO₂ Composite Hydrogel-Modified PES Ultrafiltration Membranes on Antibiotic Removal Performance and Membrane Fouling Behavior. PVA/TiO2复合水凝胶改性PES超滤膜对抗生素去除性能和膜污染行为的影响

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-31 DOI: 10.3390/membranes16090293

Mingyang Li, Bingyang Wang, Jianqiang Zhao, Lianghao Lv, Zhizhang Xu, Zhaoqian Xie, Xiaobo Wu, He Zhang, Guoliang Bai, Dingkun Lu

{"title":"Effects of PVA/TiO2 Composite Hydrogel-Modified PES Ultrafiltration Membranes on Antibiotic Removal Performance and Membrane Fouling Behavior.","authors":"Mingyang Li, Bingyang Wang, Jianqiang Zhao, Lianghao Lv, Zhizhang Xu, Zhaoqian Xie, Xiaobo Wu, He Zhang, Guoliang Bai, Dingkun Lu","doi":"10.3390/membranes16090293","DOIUrl":"10.3390/membranes16090293","url":null,"abstract":"To improve the hydrophilicity and antibiotic retention of conventional polyethersulfone (PES) ultrafiltration membranes, a PVA/TiO2 composite hydrogel-modified PES membrane was prepared by hydrogel coating and in situ TiO2 embedding. Its removal of common antibiotics and antibiotic resistance genes (ARGs), as well as fouling behavior, was evaluated under different environmental conditions. The modified membrane formed an approximately 5 μm gel layer, showed reduced surface roughness, and increased pure-water flux by about 5.0%. It removed four antibiotics more effectively than the pristine membrane, with the greatest improvement for ofloxacin. Environmental conditions strongly affected antibiotic removal but had limited effects on ARG reduction. Low pH favored sulfamethoxazole, tetracycline, and ofloxacin removal, while 5 μm particles increased sulfamethoxazole and tetracycline removal by 27.0% and 22.0%, respectively. Hermia model fitting suggested predominantly standard blocking-type hydraulic behavior under the tested pH conditions and complete blocking-type behavior in the presence of HA or particles. These results show that PVA/TiO2 modification improves PES membrane hydrophilicity and antibiotic removal, although fouling under complex conditions remains important.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13608905/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Operational Stability and Treatment Efficiency of a Reverse Osmosis Plant Treating Highly Mineralized Water: Results of a Four-Year Follow-Up Study. 反渗透装置处理高矿化水的操作稳定性和处理效率：一项为期四年的随访研究结果。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-31 DOI: 10.3390/membranes16090292

Smail Es Sellami, Taleb Abdeslam, Mohammed El Hachoumi, Badr El Fathi

{"title":"Operational Stability and Treatment Efficiency of a Reverse Osmosis Plant Treating Highly Mineralized Water: Results of a Four-Year Follow-Up Study.","authors":"Smail Es Sellami, Taleb Abdeslam, Mohammed El Hachoumi, Badr El Fathi","doi":"10.3390/membranes16090292","DOIUrl":"10.3390/membranes16090292","url":null,"abstract":"This study evaluates the long-term operational performance of a full-scale reverse osmosis desalination plant treating highly mineralized water under real industrial operating conditions. Unlike conventional laboratory or pilot-scale investigations, the analysis is based on four years of operational data (2020-2024), providing a representative assessment of membrane system behavior under variable environmental and hydraulic conditions. Statistical analyses including descriptive statistics, time-series analysis, Pearson correlation, and inter-annual comparisons were performed using Python-based data-processing tools. An Operational Stability Index was also introduced to quantify process consistency over time. The results demonstrate stable desalination performance, with salt rejection exceeding 90%. Operational monitoring indicated effective pretreatment conditions, low SDI values, and controlled membrane fouling under long-term operation. Differential pressure evolution and cleaning-in-place performance further confirmed the effectiveness of the implemented fouling mitigation strategy. Membrane autopsy investigations revealed the coexistence of biological fouling, silica scaling, and localized oxidative degradation, highlighting the importance of integrated pretreatment and operational control. The findings demonstrate the value of long-term industrial monitoring for understanding membrane performance, fouling behavior, and operational stability in full-scale RO systems. This approach supports data-driven operational optimization and may contribute to the future development of predictive monitoring and intelligent desalination-management frameworks as a Digital Twin.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved Removal of Neonicotinoid Insecticides from Real Water Matrices by Modified UF and NF Membranes. 改性超滤膜和纳滤膜对真实水基质中新烟碱类杀虫剂的去除效果研究

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090289

Francisco J Real, Juan L Acero, Esther Matamoros, Carolina Godoy

{"title":"Improved Removal of Neonicotinoid Insecticides from Real Water Matrices by Modified UF and NF Membranes.","authors":"Francisco J Real, Juan L Acero, Esther Matamoros, Carolina Godoy","doi":"10.3390/membranes16090289","DOIUrl":"10.3390/membranes16090289","url":null,"abstract":"The removal of five neonicotinoid insecticides, acetamiprid, chlothianidin, imidacloprid, thiacloprid, and thiamethoxam, was explored using various commercial ultrafiltration (MW, PT, and GK) and nanofiltration (HL) membranes provided by GE Osmonics Labstore. Several modification techniques have also been applied to one ultrafiltration membrane, including immersion in hot water, sodium hydroxide, and ethanol solutions, as well as interfacial polymerization with monomers such as polyethyleneimine and trimesoyl chloride, to improve micropollutant retention while maintaining adequate permeability. The results show that only immersion in ethanol (60% solution or absolute ethanol) improved membrane performance. Among the reagents and conditions tested for membrane surface modification via polymerization, the sequential application of polyethyleneimine, trimesoyl chloride, oven curing at 60 °C, followed by immersion in a glycerol solution was the most efficient. The optimal modified membrane was tested with real water matrices (two secondary effluents from wastewater treatment plants and a surface water sample) in which the neonicotinoids were dissolved. The modified ultrafiltration membrane showed higher retention (80-95%) than commercial ultrafiltration (15-60%) and levels similar to nanofiltration membranes (70-95%), demonstrating greater efficiency in retaining neonicotinoids under real water conditions, although the permeability was about half that of the commercial nanofiltration membrane. Therefore, this modification process is a promising alternative to commercial membranes for removing micropollutants from urban wastewater and should be considered.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609286/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailoring Polyetherimide Ultrafiltration Membranes via Non-Solvent- and Vapor-Induced Phase Separation: Effects of Fabrication Pathway and Membrane Formulation on Morphology and Bovine Serum Albumin Separation Performance. 通过非溶剂和气相分离裁剪聚醚酰亚胺超滤膜：制备途径和膜配方对形态和牛血清白蛋白分离性能的影响。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090288

Mohammad Hosein Moghadasin, Masoud Salavati, Mohammed Majdoub, Ahmed Al-Ostaz, Alexander M Lopez, Sasan Nouranian

{"title":"Tailoring Polyetherimide Ultrafiltration Membranes via Non-Solvent- and Vapor-Induced Phase Separation: Effects of Fabrication Pathway and Membrane Formulation on Morphology and Bovine Serum Albumin Separation Performance.","authors":"Mohammad Hosein Moghadasin, Masoud Salavati, Mohammed Majdoub, Ahmed Al-Ostaz, Alexander M Lopez, Sasan Nouranian","doi":"10.3390/membranes16090288","DOIUrl":"10.3390/membranes16090288","url":null,"abstract":"Polyetherimide (PEI) ultrafiltration membranes were fabricated for bovine serum albumin (BSA) separation using nonsolvent-induced phase separation (NIPS) and vapor-induced phase separation (VIPS). In the NIPS approach, membranes containing varying amounts of Pluronic P-123, with or without graphene nanoplatelets (GNPs), were prepared. Pluronic P-123 acted as a pore-forming agent, while GNPs enhanced permeability without compromising rejection. The membrane with 1 wt.% Pluronic P-123 achieved a pure water flux (PWF) of 355 LMH and 90% BSA rejection. Incorporating 1 wt.% GNPs further improved performance to 747 LMH and 98% rejection. VIPS membranes were fabricated using the same composition as N10, containing 17 wt.% PEI and 1 wt.% Pluronic P-123 without GNPs, to isolate the effect of the fabrication pathway. Increasing vapor exposure time reduced PWF but generally improved BSA rejection, whereas higher RH increased PWF while decreasing rejection. The composition-matched NIPS membrane, N10, exhibited a PWF of 355 LMH and approximately 91% BSA rejection. In comparison, the highest PWF and BSA rejection among the VIPS membranes were 91 LMH and 76.5%, respectively, and the selected balanced VIPS condition at 30 min and 65% RH yielded approximately 49 LMH and 55% rejection. The higher performance of N11, which achieved 747 LMH and 98% rejection, is attributed to GNP incorporation within the NIPS series and was not used to isolate the fabrication-pathway effect. Overall, the composition-matched comparison demonstrates that NIPS produced a more favorable morphology and BSA separation performance than VIPS under the investigated conditions.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609832/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Myelin Sheath as a Multilamellar Electromechanical System: Bilayer Stack Analogs, Energy Buffering, and Biological Memory. 髓鞘作为多层机电系统：双层堆叠类似物、能量缓冲和生物记忆。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090285

Dima Bolmatov, Zack Woodel, Igor M Gussev, Miguel Turrero García, Erik B Watkins, Yong Q Cai, Ilia N Ivanov

{"title":"The Myelin Sheath as a Multilamellar Electromechanical System: Bilayer Stack Analogs, Energy Buffering, and Biological Memory.","authors":"Dima Bolmatov, Zack Woodel, Igor M Gussev, Miguel Turrero García, Erik B Watkins, Yong Q Cai, Ilia N Ivanov","doi":"10.3390/membranes16090285","DOIUrl":"10.3390/membranes16090285","url":null,"abstract":"The myelin sheath has traditionally been viewed as a passive electrical insulator that accelerates nerve impulse propagation. Recent experimental studies, however, indicate that myelin is a dynamic biological material whose structure and hydration state adapt to neuronal activity, metabolic conditions, and environmental perturbations. Building on these observations, we propose a conceptual framework that treats myelin as an adaptive electromechanical multilamellar interface, in which coupled lipid bilayers, hydration layers, and interlayer interactions influence energy dissipation, structural adaptation, and history-dependent behavior. Within this framework, collective excitations and delayed relaxation processes are hypothesized to contribute to transient energy storage and adaptive responses to electrical activity in the integrated axon-glia system. We further argue that testing this framework requires multimodal characterization combining electrophysiology with neutron and X-ray scattering, terahertz spectroscopy, and data-driven analysis to establish quantitative relationships between membrane structure, dynamics, and function. This work outlines experimentally testable predictions and provides a foundation for investigating how electromechanical adaptation of myelin may contribute to normal neural function and the early biophysical changes associated with demyelinating disease.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609546/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0