COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Jinsheng Zhou,Yanming Lin,Ling Wang,Li Zhou,Bin Yu,Xianghui Zou,Zhongkuan Luo,Huiyuan Hu
A novel near-infrared (NIR) light induced photoinduced electron transfer-reversible addition - fragmentation chain-transfer (PET-RAFT) polymerization was developed and carboxybetaine methacrylate (CBMA) polymer brush was constructed on the PVA hydrogel via this one-spot method to enhance the antifouling properties. PVA-g-pCBMA hydrogel displayed higher hydrophilicity , while the thermal properties decreased due to the lower decomposition properties of pCBMA and the partly destruction of crystal structure inside the PVA hydrogel. The antifouling properties of PVA-g-pCBMA hydrogel was improved significantly because the surface hydration and steric repulsion effect of pCBMA polymer brush. Importantly, PVA-g-pCBMA hydrogel PVA-g-pCBMA hydrogel could be considered as no cytotoxic effect or reduction of proliferation to primary human eyelid fibroblast cells following the guidelines stated by ISO 10993-5:2009 (direct contact test). Considering the excellent penetration ability of NIR, AlPc catalyzed PET-RAFT polymerization provided a new modification approach for various biological or medical materials on industrial scale.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Hongtong Hu,Jia Liu,Zhenguang Wang,Yan Zhang,Yongjie Ding,Jifei Ye
Lithium perchlorate/polyvinyl alcohol (LP/PVA)-based electrically controlled solid propellants (ECSPs) exhibit significant potential for novel controllable propulsion; however, their complex thermal decomposition behavior restricts practical application. To overcome these limitations, this study introduces ammonium perchlorate (AP) as a synergistic oxidative modifier. Herein, the thermal decomposition characteristics and non-isothermal kinetics of LP/AP/PVA-based ECSPs were systematically investigated. Simultaneous thermal analysis reveals that the addition of AP transforms the slow, multi-step decomposition of the LP/PVA-based ECSP into a single, vigorous stage. This leads to a more concentrated energy release and concurrently decreases the main decomposition peak temperature from 326.17 °C to 259.5 °C. Kinetic analysis via the model-free isoconversional Kissinger-Akahira-Sunose (KAS) method demonstrated that the average activation energy (Ea) was significantly reduced from 169.24 kJ/mol for the pristine LP/PVA-based ECSP to 111.08 kJ/mol for its optimized LP/AP/PVA counterpart. The variation trend of Ea reveals a fundamental shift in the rate-limiting step: from a diffusion-controlled process hindered by a physical barrier of char layer and molten salt, to a chemical reaction-controlled process accelerated by AP. Based on these findings, a novel “acid-catalyzed and radical-synergistic initiation” mechanism is proposed: HClO 4 generated from AP decomposition induces the dehydration of the PVA backbone at the early stage, while ·OH radicals provide a low-energy-barrier reaction pathway. Consequently, the combustion performance was enhanced, evidenced by a 142.1% increase in burning rate, a 21.9% reduction in ignition delay, and a 13.1% decrease in the required electrical energy for ignition. This work not only presents an effective strategy for tuning ECSP performance but also provides fundamental kinetic insights into the synergistic enhancement effect, offering experimental support for the design of novel ECSP formulations.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2018
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IF 5.091
Nan Lu,Xi Zhang,Ruiqi Na,Wendi Ma,Chongyang Zhang,Yuchao Luo,Yongfeng Mu,Shuling Zhang,Guibin Wang
The synthesis of a nanocomposite gel polymer electrolytes (NGPEs) using Li + -functionalized SPEEK (SPEEK(Li)) nanofiber membrane as a matrix, cross-linked PVA as a gelled agent and LiClO 4 as an electrolytic salt for electric double layer capacitors (EDLCs) were reported in this work. Compared with conventional PVA based gel electrolyte, the “SO 3 − Li + ” functional groups and the pores structure of the SPEEK(Li) nanofiber membrane improves the ionic conductivity as well as mechanical stability , which made the prepared NGPEs exhibited a high ionic conductivity of 8.9 × 10 −3 S cm −1 at ambient temperature and a large voltage stability window range from 0 to 2.0 V. The fabricated symmetric EDLCs showed a specific capacitance of 146.96 F g −1 at a current density of 0.5 A g −1 , with a maximum energy density of 18.26 W h kg −1 . Meanwhile, the EDLCs showed outstanding cyclical stability of 98% specific capacitance retention after 3000 cycles GCD testing, all of these results indicated that the NGPEs should be appropriate to EDLCs and next-generation energy storage systems .
研究领域:
材料科学
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电化学
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能源存储
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高分子化学
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纳米技术
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固体电解质
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Zhifeng Zhao,Qingtao Zhu,Qiuyun Chen,Junjie Ma,Lijun Zhou,Siru Su,Jiabin Chen,Zhigao Liu,Quanping Yuan
The study systematically explored the effects of the combination of CNF and PVA on PVA-CMZ composite films. • PVA-CNF dual-network structure possesses high specific surface and abundant active sites. • The abundant binding of ZnO is promoted by the active sites on the above structure. • The interface interaction formed by the oxygen-containing groups of CNF and PVA makes the overall bonding tighter, where tensile strength of composite films reaches 72.50 ± 7.39 MPa. • V OC and I SC of PENG reaches 10.11 V and 698 nA under pressure of 100 kPa respectively. High-performance and environmentally friendly piezoelectric films based on biomass have received extensive attention recently. Among them, wooden cellulose nanofiber (CNF) has become a research hotspot for its low cost, high flexibility and good biocompatibility. In this work, the interwoven PVA-CNF dual-network structure with abundant active sites for its high specific surface was constructed by adding CNF and polyvinyl alcohol (PVA) with abundant oxygen-containing groups, in which MXene was also added as filler, as well as that ZnO was synthesized in the MXene and dual-network substrate via an efficient two-step hydrothermal process to obtain PVA-CNF/MXene@ZnO (PVA-CMZ) composite film. The abundant active sites on the surface of the dual-network structure promote the in-situ synthesis and binding of a large amount of ZnO, further enhancing the overall piezoelectric performance. Moreover, a strong interface interaction is formed by the abundant oxygen-containing groups of CNF and PVA in the assembly process, by which the tight bonding interface among the fillers is practically conducive to the charge and stress transfer, thereby enhancing the overall piezoelectric and mechanical performance. Therefore, the longitudinal piezoelectric constant and tensile strength of the composite film can reach as high as 16.05 ± 0.63 pC·N −1 and 72.50 ± 7.39 MPa respectively, along with the open-circuit voltage and short-circuit current of 10.11 V and 698 nA under a pressure of 100 kPa. Furthermore, it can charge commercial capacitors of specification efficiently, which can still generate stable output under the periodic cyclic force of 5000 s.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xiali Guan,Xinbo Wei,Qian Wang,Bing Chen,Yu Wang,Xiaonan Yang
A crosslinker-free PVA/CS hydrogel with polydopamine-engineered Ag nanoparticles was developed. • The hydrogel shows strong tissue adhesion, mechanical robustness, and self-healing for long-term wound application. • PDA enables sustained Ag⁺ release and stable NIR-responsive photothermal heating. • Ag@PDA0.5 balances antibacterial efficacy, photothermal activity, and cytocompatibility. • NIR-mediated photothermal treatment reduces inflammation and promotes vascularization in MRSA-infected diabetic wounds. Chronic diabetic wounds complicated by multidrug-resistant bacterial infections remain a persistent clinical challenge, requiring advanced wound dressings that integrate effective antibacterial protection with tissue regeneration. Herein, we developed a biocompatible and crosslinker-free hydrogel system composed of polyvinyl alcohol (PVA) and chitosan (CS), integrated with polydopamine-coated silver nanoparticles (Ag@PDA). The PDA coating, together with the hydrogel matrix, regulated Ag + release, thereby maintaining antibacterial activity while reducing silver-associated cytotoxicity. The resulting PVA/CS-Ag@PDA hydrogel exhibited favorable mechanical properties, tissue adhesion, cytocompatibility, antioxidant activity, and broad-spectrum antibacterial efficacy. In vitro and in vivo experiments collectively demonstrated the pro-regenerative and immunomodulatory effects of the hydrogel. In vitro, the hydrogel promoted endothelial cell migration and regulated macrophage inflammatory responses, as evidenced by reduced pro-inflammatory markers and enhanced repair-associated gene expression. In an MRSA-infected diabetic rat wound model, PVA/CS-Ag@PDA treatment suppressed bacterial growth, attenuated inflammatory infiltration, downregulated pro-inflammatory genes including Il6 and Tnf, and upregulated repair-associated genes including Il10 and Mrc1. Moreover, Ag@PDA endowed the hydrogel with concentration-dependent near-infrared (NIR)-triggered photothermal behavior. Among the tested formulations, PVA/CS-Ag@PDA0.5 generated a moderate and stable photothermal response and was selected for NIR-assisted antibacterial treatment. Under NIR irradiation, PVA/CS-Ag@PDA0.5 further enhanced bacterial eradication against MRSA and E. coli . NIR-assisted treatment also reduced CD45 + inflammatory cell infiltration and CD68 + macrophage accumulation, enhanced CD206-associated reparative signaling, and improved epidermal remodeling, collagen deposition. This work presents a rational strategy for engineering silver-based hydrogel dressings with controlled Ag + release, NIR-enhanced antibacterial activity, and improved regenerative efficacy for infected diabetic wound repair. Download: Download high-res image (327KB) Download: Download full-size image
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IEEE SENSORS JOURNAL
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2025
·Vol. 25
·期 15
·28390-28396
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IF 4.5
Jing Zhou,Mengyuan Wu,Tongtong Xie,Shiwei Liu,Yi Zhuang,Yudong Wang,Nan Chen,Yikun Bu,Hongyan Fu
A surface plasmon resonance (SPR) sensor based on a polyvinyl alcohol-graphene oxide (PVA-GO) composite film and a polydimethylsiloxane (PDMS) film was proposed for simultaneous measurement of relative humidity (RH) and temperature. The SPR effect was excited by an MMF-SMF-MMF cascaded structure coated with Ag film, and one channel was excited by coating PVA-GO film on its surface for RH sensing, while the other channel was excited by coating PDMS film is used for temperature measurement. The experimental results show that the RH sensitivity of the sensor is 0.507 nm/% RH, and the temperature sensitivity is −3.27 nm/°C. The proposed sensor offers the advantages of compact structure, low cost, and stability and is suitable for fields that require simultaneous measurement of temperature and RH, such as agricultural storage, industrial production, and weather forecasting.
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INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Jiayu Xie,Xuran Jin,Hong Cheng,Wei Chen,Wancheng Yu,Linlin Wang
Glycerol has been proved to be an effective plasticizer for polyvinyl alcohol (PVA), which can significantly increase PVA’s processability and ductility, whose molecular origin remains unclear. In current study, the physical structure and chain dynamics of polyol plasticized PVA were studied in detail, including ethylene glycol , glycerol, erythritol , xylitol , and sorbitol under the same addition level. The glycerol plasticized PVA exhibits the most significant reduction in Young’s modulus, enhanced superior toughness, and the lowest melting temperature (195 °C) as compared with other polyols. The molecular mechanism was elucidated through comprehensive analysis, with a particular focus on solid state NMR (SS NMR) results. The physical structure was first elucidated by the Small Angle X-ray Scattering (SAXS) and Wide Angle X-ray Scattering (WAXS). The crystallinity of the glycerol plasticized PVA was the lowest 29 % by WAXS and the thickness of the amorphous layer was the largest 7.76 nm by SAXS among different plasticized PVA films. This suggests the significant influence of glycerol on structure change of PVA. The molecular dynamics information was further accessed by Low Field Nuclear Magnetic Resonance (LF NMR), where two key features are obtained: i) Different dynamics dimensionality. The 1 H spin diffusion NMR was used to check the dimensionality from the aspect of chain dynamics. Compared with other plasticizers, LF NMR result shows that glycerol plasticized PVA has a two-dimensional (2D) structure; ii) Chain dynamics heterogeneity in the interphase . With respect to the chain dynamics heterogeneity in the interphase, the glycerol plasticized PVA shows the most heterogeneous dynamics, with the lowest ratio of the rigid amorphous fraction (RAF) of 0.507 in the interphase. Current study provides a versatile analytical strategy to quantify the plasticizing effect.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yonghang Yu,Xiaocheng Bao,Cui Du,Kaiwei Chen,Dedong Ji,Chen Zhou,Shengyang Yang
Solar-driven interfacial evaporation has emerged as a highly promising route, leveraging abundant solar energy for efficient desalination. However, many existing solar evaporators still face challenges such as salt accumulation and, crucially, fail to reduce heavy metal concentrations to the ultra-low levels required by drinking water standards. To address this gap, we have developed a room-temperature fabricated graphene oxide/siloxane-PVA hydrogel (GO/SPH) evaporator wherein solar-driven evaporation works in synergy with integrated chelating amino groups to achieve the thorough removal of heavy metal ions concurrent with desalination. The optimized 3.0 wt% GO/SPH composite demonstrates a remarkable evaporation rate of 2.21 kg m −2 h −1 under 1 sun irradiation, a two-fold improvement over the pristine SPH. This exceptional dual-function performance is underpinned by its synergistic architecture. For solar evaporation, GO within the matrix acts as a highly efficient photothermal agent, achieving 91.4% conversion efficiency. Concurrently, for heavy metal remediation, amino ligands derived from the APTMS crosslinker enable the selective sequestration of Cu 2+ , Cr 3+ , Cd 2+ , and Pb 2+ ions through specific coordination chemistry. Crucially, the entire evaporator is stabilized by a hydrolytically stable Si O Si network, which ensures robust multi-cycle performance by retaining over 95% of its initial efficiency and preserving its decontamination integrity over extended operation.
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CHEMOSPHERE
·
2023
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IF 8.8
Lingli Liu,Sheng Xu,Zhenxi Wang,Xiaoguang Chen,Meng Cao,Shangxi Zhang,Yang Liu,Jinlong Cui
In order to promote the heavy metal ions removal of porous gel adsorbent and protect the adsorbent from other pollutants in wastewater, the tetrapod ZnO whiskers (tZnO) modified by amino-chain brush was introduced into the polyvinyl alcohol (PVA) matrix to prepare the PVA/NH 2 @TAtZnO composites with brush structure for toxic Pb(II) removal. The adsorption property, adsorption process and adsorption mechanism were studied by adsorption isotherms, adsorption kinetics, adsorption thermodynamics, SEM-EDS analysis and XPS analysis. And the anti-interference ability and anti-interference mechanism were researched by SEM-EDS analysis and XPS analysis. It was found that the PVA/NH 2 @TAtZnO composites displayed a soft-hard compound pore-brush structure and showed a good selective adsorption on Pb(II). The research of isotherms and kinetics indicated that the adsorption process was fitted well to Langmuir model and pseudo-second-order model, respectively, and the research of thermodynamics revealed the endothermic nature. The adsorption mechanism was inferred as the combination of predominant chemisorption and subsidiary physisorption. Comparing with the neat PVA matrix, the PVA/NH 2 @TAtZnO composites displayed a good anti-interference property on Pb(II) adsorption and showed an alleviative clogging pore-canal structure in the wastewater with SiO 2 NPs or PAC flocculants . The anti-interference intensity ΔQ and anti-interference factor χ were proposed to reflect the anti-interference ability of this adsorbent which was promoted with the increasing amino brush length or density. By the analysis of SEM-EDS and XPS, the anti-interference mechanism was explored as the steric-hinerance effect of tZnO hard brush to suspended SiO 2 NPs pollutant and the coordination effect of functional amino soft brush to soluble PAC pollutant. Besides, the prepared PVA/NH 2 @TAtZnO adsorbent possessed a good reusability under multiple adsorption-desorption processes and also presented a well applicability in real water matrix. The research indicated the huge potential of prepared PVA/NH 2 @TAtZnO adsorbent in heavy metal ions removal.
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PubMed
高影响因子
ACS Biomaterials Science & Engineering
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2022
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IF 5.395
Yuanxiang Xie,Chuchu Gan,Zhixian Li,Weifeng Liu,Dongjie Yang,Xueqing Qiu
Antibiotic-resistant bacteria and biofilms are among the most difficult challenges in infection treatment. Herein, lignin-copper sulfide (LS-CuS) nanocomposites were incorporated into a poly(vinyl alcohol) (PVA) hydrogel to fabricate a LS-CuS@PVA composite hydrogel with near-infrared-activated photothermal, photodynamic, and peroxidase-like performance. The antibacterial tests of LS-CuS@PVA exhibited the highest antibacterial rate that caused 3.8-log and 4.8-log reductions of colony forming units (CFUs) against Escherichia coli and Staphylococcus aureus in the presence of H2O2 under near-infrared (NIR) light irradiation for 10 min. The significantly improved bactericidal performance could be attributed to the synergistic effects of hyperthermia and reactive oxygen species (ROS). Furthermore, the LS-CuS@PVA hydrogel could eradicate the already formed biofilm and inhibit biofilm formation. Considering the highly effective antibacterial and antibiofilm activity of the LS-CuS@PVA hydrogel, this work could provide new insights for the design of poly(vinyl alcohol)-based composite hydrogels for wound healing and wound dressing.
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PubMed
高影响因子
Journal of Water Process Engineering
·
2022
·
IF 7.34
Lin Chen,Fangqing Li,Longjie Jiang,Fudong He,Yufei Wei
Polytetrafluoroethylene (PTFE) hydrophobic membranes used in direct contact membrane distillation (DCMD) processes were prone to fouling and wetting by oil and surfactants, which hampered their broad industrial application. In this work, a new Janus composite membrane was developed by modifying UiO-66-NH 2 with polyvinyl alcohol (PVA) as a cross-linking agent and immobilizing the modified UiO-66-NH 2 on the PTFE membrane by vacuum filtration. By tuning the ratio of PVA to MOF , an optimally proportioned Janus membrane was obtained, and its performance was tested in DCMD experiments through the use of a sodium chloride feed solution containing hexadecane and sodium dodecyl sulfate. The top layer of this Janus membrane exhibited underwater oleophobicity (130.1 ± 0.96°) and hydrophilicity in the air (54.0 ± 0.92°), while the bottom layer is hydrophobic (132.3 ± 0.97°). Compared to the pristine PTFE membrane, the modified Janus membrane demonstrated promising resistance to both membrane fouling and wetting of oils and surfactants. The desalination rate of 99.99% was still achieved within 24 h with the conductivity remaining lower than 10 μS/cm and the flux maintained at 21.3 L/(m 2 ·h). As a result, the Janus composite membrane developed in this study was shown to be a prospective alternative for treating wastewater containing oily substances and surfactants in a resourceful manner.
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Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 45
·15934-15944
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IF 6.4
Weifeng Zhong,Yufang Song,Jiwei Chen,Shuai Yang,Lihao Gong,Dongjian Shi,Weifu Dong,Hongji Zhang
Practical applications usually require solid conductive hydrogels with outstanding mechanical stability for flexible energy storage devices. Herein, a synergistic strategy of acetic acid induction and salting-out is proposed to achieve strong and tough conductive poly(vinyl alcohol) (PVA) hydrogels for flexible solid-state supercapacitors. Acetic acid introduced into the PVA/dimethyl sulfoxide (DMSO) system robbed the hydrogen bonding sites of DMSO bound to the hydroxyl groups of PVA, further encouraging the restoration of intra/inter-chain hydrogen bonds of PVA to form an organic pre-gel. Immersion of the PVA pre-gel in salt solution triggers the salting-out process coupled with solvent exchange, facilitating the structural microdomain densification and homogenization, forming a densely cross-linking network and endowing the synergistic PVA hydrogel with splendid mechanical capabilities (strength of 9.06 MPa, 1763% fracture elongation, and toughness of 85.8 MJ m−3). Attributed to the incorporation of ions, the synergistic PVA hydrogel attains satisfactory ionic conductivity (18.02 mS cm−1). The assembled supercapacitor based on synergistic PVA hydrogels and carbon cloth/polyaniline composite electrodes delivers a prominent areal-specific capacitance of 73.13 mF cm−2 at 0.5 mA cm−2 and can achieve stable output even under deformation. A practical and efficient avenue for constructing strong tough conductive hydrogels is developed in this work, which has great potential for use in energy storage devices.
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