Article
Environmental Sciences
Su Yeon Lee, Yu Jin Jeong, Won Ho Park
Summary: In this study, nanofibrous membranes (NFMs) were fabricated via green electrospinning of poly(vinyl alcohol) (PVA), and their water resistance was improved through simple heat treatment. Heavy metal adsorbents were prepared by dip-coating the NFMs in an aqueous solution of tannic acid (TA). The TA-coated PVA NFMs exhibited excellent selectivity for Pb(II) and retained over 70% of their initial adsorption capacity after multiple cycles of adsorption/desorption.
Article
Chemistry, Physical
Romina HMTShirazi, Toraj Mohammadi, Amir Atabak Asadi
Summary: Amino group grafted halloysite nanotubes were used to enhance the adsorption capacity of chitosan/polyvinyl alcohol nanofibers for Cd(II) and Pb(II). By characterizing the compositional changes, morphology, and optimizing adsorption parameters, stable affinity membranes with promising heavy metal ions removal capabilities were obtained.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Physical
Noha Amaly, Ahmed Y. EL-Moghazy, Gang Sun, Pramod K. Pandey
Summary: Novel nanofiber absorbents have been developed to remove tetracycline antibiotic residues from dairy manure, showing high adsorption efficiency and stability in wastewater samples, with the potential for reuse.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Yangang Jiang, Jianwei Lu, Li Guo
Summary: Thermoplastic-poly(vinyl alcohol-co-ethylene) (EVOH) nanofibrous membranes (NFMs) were fabricated through structure controlled high-speed flow deposition process from EVOH nanofibrous suspensions. Butane tetracarboxylic acid (BTCA) was grafted onto EVOH NFMs to form chromatographic media by impregnation method. The obtained EVOH/BTCA NFMs possess selective absorption to positively charge proteins via electrostatic interaction.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Chemical
Zhongyue Sun, Xuewu Zhu, Fengxun Tan, Weiwei Zhou, Yongrui Zhang, Xinsheng Luo, Jingtao Xu, Daoji Wu, Heng Liang, Xiaoxiang Cheng
Summary: This study fabricates loose nanofiltration (LNF) membranes with high water permeance and excellent dye/salt selectivity using inexpensive and nontoxic poly(vinyl alcohol) (PVA) as an aqueous monomer. The optimized PVA-based membrane shows outstanding water permeability, favorable dye rejection, and low salt rejection. It also exhibits excellent antifouling properties and long-term stability, making it a promising candidate for industrial-scale LNF membrane production.
Article
Materials Science, Multidisciplinary
Tong Mu, Ruihong Liu, Ning Shi, Guorui Wang, Jingshuai Yang
Summary: This study focuses on the preparation of dual cross-linked anion exchange membranes (AEMs) using poly(vinyl alcohol) (PVA) for vanadium flow batteries (VFBs). PVAc, a tertiary amine group functionalized PVA, is synthesized and used as the AEM material. The dual cross-linked PVAc-BPTMA-DBPX-GA membranes exhibit excellent properties, including enhanced sulfonic acid (SA) uptake, low area resistance (AR), low vanadium ion permeability, and high ion selectivity. The VFB based on PVAc-0.5BPTMA-0.5DBPX-GA shows a higher energy efficiency and stable performance in long-term operation compared to the Nafion 115 membrane.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yuyang Zhao, Jinrui Zhang, Gang Qiao, Dongshuai Hou, Biqin Dong, Hongyan Ma
Summary: This study investigates the synergistic effect of carboxylated carbon nanotubes and poly(vinyl alcohol) on the mechanical properties of cement paste. The results demonstrate that their combination significantly increases the flexural strength of the cement paste and the strength enhancement mechanism is revealed from the perspectives of cement matrix enhancement and interface enhancement.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Yifan Zheng, Hong Huang, Yan Wang, Jing Zhu, Junrong Yu, Zuming Hu
Summary: This study presents a facile and low-cost design strategy for a transparent, gradient cross-linked, patternable and reprogrammable humidity-responsive actuator based on PVA. The actuator is capable of humidity-responsive ability, gradient cross-linking, and photo-controlled reversible cross-linking. It demonstrates fast actuation speed, large actuation amplitude, and complex shape deformation control.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Polymer Science
Alessandro Angelini, Anja Car, Ionel Adrian Dinu, Luigi Leva, Wilfredo Yave
Summary: Tailor-made poly(vinyl alcohol)-b-poly(styrene) copolymers (PVA-b-PS) for separation membranes are synthesized using reversible-deactivation radical polymerization techniques. These di-block copolymers have high molecular weight (>70 kDa), high PVA content (>80 wt%), and good film-forming property. They self-assemble in aqueous media to form micelles, which when cast on a porous substrate, result in thin-film membranes with higher water permeance than that of PVA homopolymer. The PS nanodomains within the PVA matrix act as cross-linking points, eliminating the need for chemical cross-linkers and acid catalysts. Thermal annealing further enhances membrane selectivity through improved microphase separation.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Polymer Science
Sedigheh Khanmohammadi Khoshui, Seyed Abdolkarim Hosseini Ravandi, Mohammad Karimi, Zahra Talebi
Summary: In this study, a micro-nano structure PES/PEI membrane was fabricated by electrospinning and insolubilized through a crosslinking reaction using glutaraldehyde. Results showed that a crosslinking time of 90 minutes and a glutaraldehyde concentration of 0.71% in water/acetone medium successfully insolubilized the membrane and changed its surface morphology. Kinetic and isotherm studies indicated that nitrate adsorption by the PES/PEI composite followed a pseudo-second-order kinetic model and Langmuir model, respectively, with a high adsorption capacity of 53.47 mg/g.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Energy & Fuels
Lan Zhou, Feng Shi, Guojin Liu, JingPeng Ye, PengShuai Han, Guoqing Zhang
Summary: The in situ cross-linked PVA/PCM composite nanofibers prepared by an emulsion-electrospinning process show good thermal energy storage property and thermal stability, as well as improved tensile strength and water resistance, which greatly expand the potential application field of PCM nanofibers.
Article
Chemistry, Multidisciplinary
Chao Wang, Xianfeng Wang, Jianyong Yu, Bin Ding
Summary: In this study, a transparent carbon nanofibrous membrane (TCNFM) inspired by dragonfly wings is fabricated, which exhibits high light transmittance, high porosity, good mechanical properties, high PM0.3 removal efficiency, and good conductive properties.
Article
Engineering, Environmental
Yifan Zheng, Hong Huang, Junrong Yu, Zuming Hu, Yan Wang
Summary: A highly-stretchable and reprogrammable PVA-based hydrogel actuator was developed through freezing-thawing treatment and UV irradiation. The actuator exhibited improved mechanical properties and reprogrammable actuation performance, providing a facile and low-cost approach to develop high-performance reprogrammable hydrogel actuators.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Su Yeon Lee, Jun Tae Kim, Kiramage Chathuranga, Jong Soo Lee, Se Won Park, Won Ho Park
Summary: Due to its ability to remove particulate matter without compromising air permeability, nanofibrous membranes (NFMs) have become increasingly important as filter layers in face masks. In this study, tannic-acid-enriched poly(vinyl alcohol) (PVA-TA) NFMs were successfully fabricated using electrospinning, achieving a uniform solution without coacervate formation. These NFMs exhibited excellent filtration performance, UV-blocking, and antibacterial properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yuhang Chen, Pan Li, Caili Yuan, Lingping Zeng, Jianchuan Wang, Baosheng Li, Zidong Wei
Summary: High-performance anion exchange membranes (AEMs) are crucial for the commercialization of alkaline AEM fuel cells. Modification of commercial polymers is an effective way to prepare AEMs with high ionic conductivity and excellent mechanical properties. In this study, a PVA-based AEM was successfully prepared, showing high OH- conductivity and peak power density.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Biomaterials
Izabela Stupka, Artur P. Biela, Bernard Piette, Agnieszka Kowalczyk, Karolina Majsterkiewicz, Kinga Borzecka-Solarz, Antonina Naskalska, Jonathan G. Heddle
Summary: Artificial protein cages, such as TRAP-cages, have potential applications in vaccines and drug delivery. TRAP-cages have the ability to control the disassembly conditions by modifying the interface between their building blocks. By using TRAP rings with different numbers of monomers, it is possible to predict the formation of other cages.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)
Article
Materials Science, Biomaterials
Guo Zhang, Yu Wang, Hua Qiu, Lei Lu
Summary: This study presents a one-pot synthesis method for flower-like AMPs@EAMP particles by combining antimicrobial peptides with ellagic acid, offering enlarged surface area, excellent biocompatibility, and broad-spectrum antibacterial activity. In vivo studies indicate their potential for tissue repair and immune barrier reconstruction.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)
Article
Materials Science, Biomaterials
Jiamei Zhang, Lingshuang Wang, Cheng Xu, Yingui Cao, Shengsheng Liu, Rui L. Reis, Subhas C. Kundu, Xiao Yang, Bo Xiao, Lian Duan
Summary: Pluronic F127 modified silk fibroin film with different types of antibacterial agents could accelerate wound recovery by promoting fibroblast adhesion, eradicating bacteria, and facilitating angiogenesis and re-epithelialization.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)
Article
Materials Science, Biomaterials
Yinsheng Liu, Mingyue Wang, Yinfei Hui, Lei Sun, Yanrui Hao, Henlong Ren, Hao Guo, Wu Yang
Summary: In this study, a rare-earth hybrid luminescent material was developed for the detection of a biomarker for anthrax. The material showed excellent selectivity and high sensitivity, allowing for the determination of the biomarker in saliva and urine. Additionally, a convenient point-of-care testing method using fluorescent test paper and a smartphone was established for the initial diagnosis of anthrax.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)
Review
Materials Science, Biomaterials
Wenshuai Yang, Jingsi Chen, Ziqian Zhao, Meng Wu, Lu Gong, Yimei Sun, Charley Huang, Bin Yan, Hongbo Zeng
Summary: Injectable hydrogels with shear-thinning and/or in situ formation properties offer distinct advantages in bioengineering applications, as they can be directly delivered to target sites, possess self-healing abilities, and simplify the implantation process.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)