Article
Polymer Science
Michael T. Kelly, Ethan W. Kent, Bin Zhao
Summary: Stepwise conformational transitions of molecular bottlebrushes were achieved using two distinct stimuli-responsive polymers and PEO as side chains. The transitions were driven by pH-induced soluble-to-insoluble and/or temperature-triggered lower critical solution temperature transitions of the responsive side-chain polymers.
Article
Polymer Science
Monika Flejszar, Pawe Chmielarz, Joanna Smenda, Karol Wolski
Summary: This study presented the synthesis of cationic PDMAEMA brushes based on the 12 principles of green chemistry, in environmentally favorable aqueous medium, water-alcohol mixture, and commercially available alcoholic beverages. It was found that adding ethanol to the polymerization medium resulted in a product with a narrower molecular weight distribution, and using alcoholic beverages of organic origin increased the synthetic process rate. The pH-responsive character of the polymer brushes grafted from silicon wafers indicates potential applications for controlled adhesion of proteins or drug release.
Article
Polymer Science
Valdomiro V. de Souza, Gustavo P. B. Carretero, Phelipe A. M. Vitale, Iris Todeschini, Paloma O. Kotani, Greice K. Saraiva, Cristiane R. Guzzo, Hernan Chaimovich, Fabio H. Florenzano, Iolanda M. Cuccovia
Summary: Amphiphilic diblock copolymers can assemble in aqueous solutions to form polymersomes, which can respond to pH, temperature, and other conditions. These robust vesicles are being studied as drug delivery systems or nanoreactors. Through characterization, it was found that these polymersomes with dual stimulus-response may serve as a platform for gene delivery and nanoreactors.
Article
Polymer Science
Fakhri Arjmand, Zahra Mohamadnia
Summary: By fabricating a novel stimuli-responsive polymer based on P(SPEA-co-GMA) and grafting it onto the surface of modified TiO2, the limitations of traditional methods for metal ion recognition, such as expensiveness and the need for advanced equipment, have been effectively addressed. Through a series of analysis and testing, it was demonstrated that the TiO2-g-P(SPEA-co-GMA) nanocomposite possesses improved thermal stability, optical properties, and dispersion. Furthermore, the polymer can selectively complex with Zn2+ cations in the solid state, exhibiting good fatigue resistance. Overall, the fabricated optical/chemical-responsive polymer shows great potential in the field of sensors due to its portability, high detection speed, and relatively low price.
Review
Chemistry, Multidisciplinary
Dehao Yu, Xiao Xiao, Cyrus Shokoohi, Yanxin Wang, Liyue Sun, Zhaoge Juan, Matt J. J. Kipper, Jianguo Tang, Linjun Huang, Gill Sang Han, Hyun Suk Jung, Jun Chen
Summary: Smart nanofiltration membranes with stimuli-responsive components can change their properties in response to environmental changes, leading to more efficient performance and broader application prospects. This review presents the preparation methods and classification of stimuli-responsive membranes according to their mechanisms. The latest progress and main mechanisms of each stimuli-response type are discussed and summarized. Additionally, future challenges and directions for stimuli-responsive membranes are provided.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Polymer Science
Theodore Manouras, Varvara Platania, Anthie Georgopoulou, Maria Chatzinikolaidou, Maria Vamvakaki
Summary: The antimicrobial activity of partially quaternized poly(2-(dimethylamino)ethyl methacrylate) copolymers against Escherichia coli and Staphylococcus aureus was evaluated, showing a mild bactericidal effect achieved by disrupting the outer membrane of bacterial cells to release proteins.
Article
Materials Science, Multidisciplinary
Lars B. Veldscholte, Sissi de Beer
Summary: This study presents a simple method for preparing thick poly(3-sulfopropyl methacrylate) brushes by conducting the reaction in a fluid film. The method does not require deoxygenation of the reaction solution and results in minimal wasted reagents. It is particularly suitable for large substrates.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Liye Fu, Hossein Jafari, Michael Giessl, Saigopalakrishna S. Yerneni, Mingkang Sun, Zongyu Wang, Tong Liu, Kriti Kapil, Boyle C. Cheng, Alexander Yu, Saadyah E. Averick, Krzysztof Matyjaszewski
Summary: PEEK is a semi-crystalline thermoplastic with excellent mechanical and chemical properties, widely used in the biomedical field. However, due to its intrinsic hydrophobicity and inert surface, PEEK does not effectively support bone growth. Methods for surface modification are crucial for improving PEEK osseointegration.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Review
Pharmacology & Pharmacy
Nishta Krishnan, Ronnie H. Fang, Liangfang Zhang
Summary: The use of naturally derived cell membranes as surface coatings for nanoparticles has opened up a powerful new approach for a wide range of biomedical applications. Stimuli-responsive platforms that can release payloads on demand have gained increasing attention for their improved delivery, reduced side effects, and precision targeting in recent years.
ADVANCED DRUG DELIVERY REVIEWS
(2021)
Review
Chemistry, Multidisciplinary
Jing Zhang, Benzhao He, Yubing Hu, Parvej Alam, Haoke Zhang, Jacky W. Y. Lam, Ben Zhong Tang
Summary: Stimuli-responsive AIEgens have shown great potential and impressive progress in various fields, with recent achievements summarized in terms of seven most representative stimulus types. By deciphering the key work principles behind them, new insights and guidelines are offered for the design of next-generation stimuli-responsive luminescent materials for broader applications.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Konstantin Polev, Valentin Visyn, Witold Adamkiewicz, Yaroslav Sobolev, Bartosz A. Grzybowski
Summary: This study describes granular crystals held together by unusual multipolar interactions, undergoing reversible structural transitions between closed and open forms under the application of an external bias. Experimentation shows that when granules are polarized by applied bias, their interactions through a series of image charges and dipoles result in open-pore crystals that return to compact forms upon bias removal.
Article
Polymer Science
Haniyeh Najafvand Drikvand, Mitra Golgoli, Masoumeh Zargar, Mathias Ulbricht, Siamak Nejati, Yaghoub Mansourpanah
Summary: Poly(N-isopropylacrylamide) (PNIPAAm) was introduced into a polyethylene terephthalate (PET) nonwoven fabric to develop a novel support for polyamide (PA) thin-film composite (TFC) membranes without a microporous support layer. By adjusting the pore size of the nonwoven fabric using PNIPAAm hydrogel, a hydrophilic support was created. PA TFC membranes were fabricated on the PET-based support through interfacial polymerization. The resulting membrane exhibited good separation performance and temperature-responsive behavior.
Article
Polymer Science
Sk Arif Mohammad, Devendra Kumar, Md Mehboob Alam, Sanjib Banerjee
Summary: This study presents a simple and cost-effective method for ultrafast and recyclable photo-induced polymerization in ionic liquids, yielding low dispersity polymers and well-defined diblock copolymers. The stimuli response of the copolymers to pH and temperature changes has been evaluated, showing potential applications in precise spatiotemporal control. Density functional theory (DFT) calculations rationalize the underlying mechanism of the polymerization process.
Article
Polymer Science
Luke Harvey, Jean-Michel Guigner, Laurent Bouteiller, Erwan Nicol, Olivier Colombani
Summary: This study reports a 5-step synthesis and self-assembly of an azobenzene-bisurea sticker. In the trans-azobenzene configuration, long nano-cylinders can be obtained by dissolving the polymer in DMSO and slowly adding water. UV-light irradiation triggers the photo-isomerization of azobenzene units, disrupting the photo-responsive assemblies.
Article
Nanoscience & Nanotechnology
Zhe He, Yuqing Li, Han Wu, Yuhui Yang, Yilong Chen, Jiangkun Zhu, Qiuna Li, Guohua Jiang
Summary: In this paper, a unique method based on combining spiropyran (SP) with hydrogen-bonded organic frameworks (HOFs) is presented to develop smart fluorescent materials with advanced levels, showing dynamic displays of encrypted information. The addition of polydimethylsiloxane (PDMS) allows for the creation of flexible and mechanically strong membranes, capable of reversible bending and folding at angles larger than 90 degrees. This research not only demonstrates dynamic fluorescence emission, but also reveals dynamic information during the decryption process.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Polymer Science
Gopinath Kasi, Sathishkumar Gnanasekar, Kai Zhang, En Tang Kang, Li Qun Xu
Summary: This review discusses the recent advancements and potential of polyurethane (PU) composites for antibacterial applications. By incorporating fillers into the PU matrix, the resulting products exhibit unique and improved physicochemical properties. The bactericidal ability of PU composites depends on their surface composition, morphology, charge, and stability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Zhangyong Si, Wenbin Zheng, Dicky Prananty, Jianghua Li, Chong Hui Koh, En-Tang Kang, Kevin Pethe, Mary B. Chan-Park
Summary: The increasing prevalence of antimicrobial drug resistance in pathogenic bacteria poses a critical threat to global health. Cationic polymers, which target bacterial membranes, are seen as the last frontier in antibacterial development due to their low propensity for resistance and rapid bactericidal effect. Advanced antimicrobial cationic polymers show promise for overcoming bacterial membrane-related resistance mechanisms and may be useful for future therapeutic applications.
Review
Materials Science, Biomaterials
Gnanasekar Sathishkumar, Kasi Gopinath, Kai Zhang, En-Tang Kang, Liqun Xu, Yunlong Yu
Summary: Medical devices and surgical implants are essential in tissue engineering and regenerative medicine. However, biofouling and microbial colonization on the implant surface remain major concerns. Tannic acid (TA) is a polyphenol that can be used to functionalize medical substrates, inhibiting microbial adhesion and colonization. This review focuses on recent advancements in TA-based bioinspired universal surface coating technologies and their applications in antifouling and antibacterial purposes.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Biophysics
Yan Wang, Xiaodong He, Yanfang Cheng, Lin Li, Kai Zhang, En-Tang Kang, Liqun Xu
Summary: This study developed a surface modification strategy using PVA-PPy NPs and TA to create a Ti-TPP surface that can reduce bacterial adhesion. The Ti-TPP surface also exhibited photothermal property and could kill bacteria through hyperthermal effect under near-infrared irradiation, while preventing early-stage biofilm formation.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Engineering, Environmental
Xiaodong He, Jieyu Zhang, Liwei Xie, Gnanasekar Sathishkumar, Chunmei Li, Xi Rao, Jing Zhao, Kai Zhang, Rui Wang, En-Tang Kang, Liqun Xu
Summary: This study investigated a simplified method for supramolecular assembly of natural bio compounds to develop functional coating layers. The coating exhibited antibacterial, anticorrosive, and biocompatible properties, and promoted endothelial cell proliferation. In addition, the coating demonstrated effective anti-fogging performance. The one-step co-deposition method provided a simple, environmentally benign, and sustainable approach for designing and fabricating multifunctional surfaces.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Sneha Sree Mullapudi, Juwita Norasmara Rahmat, Ratha Mahendran, Yew Koon Lim, Lee Ting Ong, Kah Ying Wong, Edmund Chiong, En -Tang Kang, Koon Gee Neoh
Summary: A nanocarrier based on human serum albumin was developed for targeted therapy of bladder cancer cells, showing significant antitumor effects in a mouse model. It also exhibited efficient fluorescence targeting in the urine of BC patients, serving as a therapeutic and diagnostic tool for NMIBC management.
NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE
(2022)
Article
Chemistry, Multidisciplinary
Yanfang Cheng, Jie Tang, Xiaodong He, Gnanasekar Sathishkumar, Yan Wang, Kai Zhang, Xi Rao, En-Tang Kang, Li-Qun Xu
Summary: This study develops an antibacterial coating for biomedical materials/devices by immobilizing glucose oxidase using tannic acid. The coating shows strong antibacterial activity against Escherichia coli and Staphylococcus aureus by enzymatically converting glucose to antibacterial substances. It also effectively resists biofilm formation. In vitro and in vivo studies confirm its safety.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Biophysics
Jie Tang, Yanfang Cheng, Tao Huang, Yang Wang, Kai Zhang, En-Tang Kang, Liqun Xu
Summary: This study demonstrates a one-pot fabrication method for antifouling coatings based on the simultaneous surface adhesion of trihydroxyphenyl and dihydroxyphenyl moieties of tannic acid (TA) derivative and covalent conjugation of hydrophilic poly(2-methyl-2-oxazoline) (PMOXA). The surface hydrophilicity and deposition universality on various substrates were investigated, and the anti-bacterial, anti-platelet adhesion, and anti-biofilm formation abilities of the coating were studied. In vitro hemolysis and cytotoxicity, as well as in vivo biocompatibility, were evaluated. The results indicate that the TA/PMOXA-based coating can be used as an antifouling additive on biomedical implants and devices.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Materials Science, Coatings & Films
Zilin Chen, Xu Liu, Zhe Cheng, Xiaodong Tan, Yunjie Xiang, Jing Li, Yongping Zhang, Zhisong Lu, En-Tang Kang, Liqun Xu, Xi Rao
Summary: A ZnO/Zn(OH)(2) hybrid coating was fabricated on pure Zn surface through plasma electrolytic oxidation (PEO) to investigate the effect of PEO treatment on the degradation behavior of Zn and Zn-based materials. The degradation effects were studied through immersion tests in simulated body fluid (SBF) and Hank's solution. The results showed that PEO treatment accelerates the degradation of Zn and the corrosion products mainly consist of Zn(OH)(2), ZnO, Zn-3(PO4)(2), and Ca-P matters. PEO-treated Zn exhibited good in vitro biocompatibility and enhanced antibacterial properties, making it promising for orthopedic implants.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Kai Zhang, Xiaojuan Lei, Caiqing Mo, Jin Huang, Ming Wang, En-Tang Kang, Liqun Xu
Summary: High indoor humidity/temperature have negative impacts on public health and industrial productivity, while traditional air conditioning systems consume significant energy and contribute to the greenhouse effect. This study presents an asymmetric bilayer cellulose-based fabric that enables solar-driven dehumidification, transpiration-driven power generation, and passive radiative cooling without any energy input. The fabric demonstrates high moisture absorption and evaporation rates, reducing indoor humidity to a comfortable level under sunlight. The evaporation-driven capillary flow generates a maximum open-circuit voltage of 0.82 V and a power density of 1.13 mu W cm(-3). Moreover, the fabric achieves subambient cooling of approximately 12 degrees C and an average cooling power of approximately 106 W m(-2) under radiation of 900 W m(-2). This work opens up possibilities for developing high-performance environmentally friendly materials for sustainable moisture/thermal management and self-powered applications.
Article
Chemistry, Multidisciplinary
Xiaodong He, HuaJun Wu, Yan Wang, Yunjie Xiang, Kai Zhang, Xi Rao, En-Tang Kang, Liqun Xu
Summary: Surface modification is crucial for tailoring the functionalities of solid materials. In this study, a simple and universal surface modification method based on phytic acid (PA) is developed, which introduces antimicrobial function through the adhesion and electrostatic interaction of PA. The modified surfaces exhibit strong antibacterial performance due to the synergistic bactericidal effects of cationic polymers (CPs) and photothermal effect caused by Prussian blue nanoparticles (PB NPs). The PA-PB-CP coating disturbs the membrane integrity, enzymatic activity, and metabolism function of bacteria, leading to the elimination of adhered bacteria.
Review
Engineering, Biomedical
Sathishkumar Gnanasekar, Gopinath Kasi, Xiaodong He, Kai Zhang, Liqun Xu, En-Tang Kang
Summary: This review assesses recent advancements in polymer-photosensitizer hybrid materials developed for antibacterial photodynamic therapy (APDT) applications. The review discusses the integration and functionalization of photosensitizers with polymers, the use of photosensitizer coatings to eliminate healthcare-associated infections, and the application of photosensitizers in films, scaffolds, and hydrogels for regenerative medicine.
BIOACTIVE MATERIALS
(2023)
Article
Engineering, Biomedical
Bowen Sun, Jiayi Liu, Han Joon Kim, Juwita Norasmara Bte Rahmat, Koon Gee Neoh, Yong Zhang
Summary: In this study, a smart nanocarrier was designed to overcome the light penetration limitations in photodynamic therapy (PDT) and enhance the treatment efficacy against tumor cells. A wirelessly activated light-emitting diode (LED) implant allows remote and programmable control of photosensitizer release and treatment process.
ACTA BIOMATERIALIA
(2023)
Article
Engineering, Biomedical
Ziyi Wu, Tao Huang, Gnanasekar Sathishkumar, Xiaodong He, Huajun Wu, Kai Zhang, Xi Rao, En-Tang Kang, Liqun Xu
Summary: A simple and eco-friendly method of phytic acid-promoted exfoliation of black phosphorus nanosheets (PA@BP NSs) is developed. The resultant PA@BP NSs are conjugated with cationic polyquaternium-2 (PQ), leading to the formation of PA-BP-PQ composite coatings on the polydimethylsiloxane surface. The PA-BP-PQ composite coating exhibits remarkable bi-modal (contact-killing and photothermal) antimicrobial therapy with good biocompatibility both in vitro and in vivo.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Materials Science, Biomaterials
Lin Li, Yan Wang, Tao Huang, Xiaodong He, Kai Zhang, En-Tang Kang, Liqun Xu
Summary: The emergence of antibiotic drug resistance has led to the development of alternative strategies such as antibacterial photodynamic therapy (APDT). In this study, cationic porphyrin-based nanoparticles (NPs) were prepared and shown to have intrinsic antibacterial properties against Gram-positive bacteria. These NPs also exhibited good hemocompatibility and low cytotoxicity.
BIOMATERIALS SCIENCE
(2022)
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)
