Nanoscale
·
2025
·
IF 5.1
Yuanxiang Xiao,Weishi Zheng,Jibiao Guan,Yingyao Chen,Runxin Chen,Yini Zhao,Shuangfei Xiang
Radiative cooling offers a sustainable thermal management strategy for personal cooling under extreme solar exposure. Herein, a surface-engineered radiative cooling fabric (PHB-4%) was developed utilizing a simple electrospinning technique. The PHB-4% strategically integrates two-dimensional boron nitride nanosheets (BNNS) with high refractive index as photon scattering centers within polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) nanofibers. Through synergistic optimization of hierarchical micro-nano porous architectures and BNNS-enhanced photon scattering, the engineered PHB-4% achieves 94 % solar reflectivity and 91.5 % mid-infrared (MIR) emissivity, enabling a sub-ambient cooling effect of 5 °C under 824.4 W·m⁻² solar irradiation. Remarkably, the PHB fabric maintains 92 % reflectivity after extended ultraviolet exposure (60 days) and repeated laundering (100 cycles), outperforming conventional cooling textiles. The inherent hydrophobicity of PVDF-HFP further endows the PHB-4% with antifouling capabilities and contamination resistance. Besides, the evaluation of basic properties confirms preserved flexibility, adequate breathability, and sufficient mechanical durability for wearable applications. This multifunctional cooling textile platform establishes new possibilities for sustainable personal thermal regulation and energy-efficient outdoor thermal management systems.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Ruxue Bai,Ying Huang,Qingqing Zhang,Xinyi Hu,Sihang Li,Yumei Xian,Min Li,Cherdchai Phosri,Haihua Wang,Zhenyu Li
Membrane fouling caused by oil droplets and organic contaminants remains a significant challenge in food oily wastewater treatment. Inspired by nacre’s architecture, a superhydrophilic PVDF-PCT-Cu membrane was fabricated via a combination of deposition with polydopamine, carboxymethyl chitosan and tetrabutyl titanate and mineralization with Cu 2 + . The membrane exhibited superhydrophilicity (water contact angle: 0°) and underwater superoleophobicity (underwater oil contact angle: 152.65° ± 0.88°). It achieves high permeation fluxes (290.20–342.71 L m −2 h −1 ) and separation efficiency (98.34–99.78 %) for four oil/water emulsions (soybean oil, corn oil, blended oil, and rapeseed oil). PVDF-PCT-Cu membrane also demonstrated excellent antioilfouling performance (flux recovery rate: 91.19 %), chemical stability across acidic, alkaline, and saline conditions, and strong antimicrobial activity against Escherichia coli and Staphylococcus aureus . In treating actual food oily wastewater, PVDF-PCT-Cu membrane achieved over 90.87 % separation efficiency, significantly reducing pollutants and improving clarity, showing great potential for food oily wastewater treatment.
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高影响因子
JOURNAL OF THE TEXTILE INSTITUTE
·
2022
·
IF 1.77
Yugao Guo,Boyu Li,Jianyi Liu,Xia Liu,Qingyin Zhang,Xihui Bian
Electrospun nanofiber membranes (ENMs) of polyvinylidene fluoride which is known as solid phase extraction materials were fabricated through electrospinning technology. Different electrospinning conditions including polymer content, spinning voltage and flow rate were investigated. The optimal operation conditions for electrospun process were set at 12% of PVDF mass fraction, 12 kV of spinning voltage, 0.5 mL h−1 of flow rate, 15 cm of receiving distance, 22 °C of spinning temperature and 45% of environmental humidity. The self-made ENMs were introduced into a combined method of radial electric focusing solid phase extraction enrichment, ultrasonic elution, UV-Vis detection and PLS calculation for determining benzoic acid, phthalic acid and p-toluene sulfonic acid in aqueous samples simultaneously. The calculation results of unknown sample show that the concentrations of benzoic acid, phthalic acid and p-toluene sulfonic acid were 4.416 mg L−1, 4.976 mg L−1 and 5.27 mg L−1, respectively. The relative standard deviation values of each component are all less than 2% with a relative recovery of 84–119%. The ENMs illustrate their fascinating application prospects in determining trace complex materials in aqueous samples.
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2021
·Vol. 84
·期 9
·2541-2556
·
IF 1.915
Tong Yujia,Ding Wenlong,Shi Lijian,Li Weixing
Ultrafiltration membranes are widely used for the treatment of papermaking wastewater. The antifouling performance of polyvinylidene fluoride (PVDF) ultrafiltration membranes can be improved by changing the hydrophilicity. Here, a novel amphiphilic copolymer material, PVDF grafted with N-isobutoxy methacrylamide (PVDF-g-IBMA), was prepared using ultraviolet-induced Cu(II)-mediated reversible deactivation radical polymerization. The amphipathic copolymer was used to prepare ultrafiltration membrane via NIPS. The prepared PVDF-g-IBMA ultrafiltration membrane was estimated using 1 H NMR, FT-IR, and DSC. The contact angle, casting viscosity, and the permeation performance of the PVDF-g-IBMA ultrafiltration membrane were also determined. The pure water flux, bovine serum albumin removal rate, and pure water flux recovery rate of the PVDF-g-IBMA ultrafiltration membrane were 432.8 L·m −2 ·h −1 , 88.4%, and 90.8%, respectively. Furthermore, for the treatment of actual papermaking wastewater, the chemical oxygen demand and turbidity removal rates of the membrane were 61.5% and 92.8%, respectively. The PVDF-g-IBMA amphiphilic copolymer ultrafiltration membrane exhibited good hydrophilicity and antifouling properties, indicating its potential for treating papermaking wastewater. A novel amphiphilic copolymer PVDF-g-IBMA prepared by UV-induced RDRP. Good hydrophilic and anti-fouling properties of PVDF-g-IBMA copolymer UF membrane. The MWCO, BSA rejection rate and pure water recovery ratio were 43.7 kDa, 88.4% and 90.8%, respectively. For treating actual papermaking wastewater, the COD removal rate reached 61.5%.
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JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Xin Song,Tianhang Zhang,Saifang Huang,Jinshuo Mi,Yudong Zhang,Jadranka Travas-Sejdic,Adrian Peter Turner,Wei Gao,Peng Cao
A high-safety composite solid-state electrolyte (CSSE) was constructed by embedding the high ionic conductivity garnet type Li 6.5 La 3 Zr 1.5 Ta 0.1 Nb 0.4 O 12 (LLZTNO) powder into a polyvinylidene fluoride (PVDF) matrix. The ionic conductivity of the CSSE containing 10% LLZTNO could reach 1.05 × 10 −4 S cm −1 , and the electrochemical window was extended to 4.80 V vs Li/Li + . In addition, the evolution and composition of the SEI layer were characterized by in-situ optical microscopic observation, X-ray photoelectron spectroscopy and cryogenic electron microscopy (cryo-EM). When paired with an NCM811 cathode, the batteries showed good rate cycling performance, and the discharge capacity could be maintained at 137.1 and 91.2 mAh g −1 at 0.3C and 2C after 80 and 100 cycles. The needle penetration test further demonstrated superior safety and potential applications of the PVDF-based room-temperature CSSE batteries.
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SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Yaning Li,Jian Li,Boliang Wang,Han Ma,Zhiwei Han
Highly reactive aluminum-fluorine composites with novel structures have attracted much attention in the past decades. However, there is not a specific mechanism to explain the combustion-supporting or inducing effect of F-polymer on aluminum powders . Herein, we present a systematic study of the induced reaction mechanism and propose a new elaboration. Two types of Nano-aluminum/Poly(vinylidene fluoride) (n-Al/PVDF) composites are fabricated via electrospray and mechanical mixing method, respectively. The electrospray sample excites a Pre-Ignition Reaction (PIR) between fluorine and the Al 2 O 3 shell at a low temperature, and simultaneously the specific surface area , surface element state and alumina shell structure of aluminum powders change to some extent. However, the surface structure of the physical mixture does not change significantly in the same temperature range. On this basis, we studied the relationship between the change of surface structure and the enhanced combustion performance of aluminum in electrospray sample. The results show that the combustion-supporting effect of PVDF on aluminum powder should be attributed to the corrosion of the alumina shell and the loose structure of the PIR product.
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xinying Jia,Hailan Ji,Ganwei Zhang,Jiale Xing,Shusu Shen,Xiaoji Zhou,Suling Sun,Xu Wu,Danfeng Yu,Ian Wyman
Poly(2,2,2-trifluoroethyl methacrylate)-b-poly(imidazoled glycidyl methacrylate-co-diethylene glycol methyl ether methacrylate) (PTFEMA-b-P(iGMA-co-MEO2MA)) containing an upper critical solution temperature (UCST) polymer chain was prepared and blended with poly(vinylidene fluoride) (PVDF) to produce a thermoresponsive membrane with smart self-cleaning performance. The successful preparation of the membrane was demonstrated by attenuated total reflection–Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy characterization. The membrane shows UCST performance, and its flux changes with the filtrate temperature as the UCST polymer chain stretches out and contracts in response to various temperatures. In addition, the UCST polymer chain can disrupt the foulant and push it away from the membrane when the temperature is above the UCST and thus enables membranes to exhibit a smart self-cleaning behavior. To the best of our knowledge, this work is the first report of a smart self-cleaning membrane based on the blending of a diblock copolymer containing a UCST polymer chain with PVDF.
研究领域:
材料科学
·
膜技术
·
高分子化学
·
环境工程
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高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Huihui Gan,Jiajun Sun,Ye Xia,Pengyuan Qiu,Liang Li,Wen Zhu
A composite solid polymer electrolyte (CSPE) is the best candidate in all-solid-state lithium metal batteries because of its flexibility, high safety, wide electrochemical stability, relatively high ionic conductivity, and excellent compatibility with the lithium metal. In this work, the garnet-type Li6.75La3Zr1.75Ta0.25O12 (LLZTO) is introduced into a poly(ethylene oxide) (PEO)/poly(vinylidene fluoride–hexafluoropropylene) (PVDF–HFP)-based CSPE (PEO/PVDF–HFP/LLZTO CSPE). The PEO/PVDF–HFP/LLZTO CSPE possesses a high lithium-ion transference number of 0.47, a high ionic conductivity of 2.65 × 10–4 S cm–1, a wide electrochemical window of 5.55 V vs Li+/Li, and effective inhibition of lithium dendrite growth for 1000 h with a current density of 0.10 mA cm–2. Furthermore, the Li//LiFePO4 cell assembled with the PEO/PVDF–HFP/LLZTO CSPE delivers superior rate capability and good cycling stability. Therefore, the PEO/PVDF–HFP/LLZTO CSPE is a very promising candidate for high-performance all-solid-state lithium metal batteries.
研究领域:
材料科学
·
电化学
·
储能技术
·
高分子科学
·
锂电池
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Nina Dai,Fei Jing,Xuyuan Kou,Yao Su,Siyao Song,Shiyu Cheng,Peimei Yuan,Wen An,Yonghui Shang,Dengwei Hu
In this study, we designed and engineered a novel 3D network BT/MF/PVDF (barium titanate/melamine foam/polyvinylidene fluoride) composite film using hydrothermal process and casting technology. During the engineering process, titanium oxide (HTO) nanosheets were wound onto the surface of MF to form an HTO/MF nanocomposite material. Through hydrothermal treatment of HTO/MF, petal-like BT grew on the MF network, forming a 3D BT/MF composite material. Finally, PVDF was infiltrated into the 3D BT/MF network to fabricate the BT/MF/PVDF composite film. The engineered 3D BT/MF/PVDF composite films exhibit excellent dielectric properties with dielectric constant of 46.8 at 1 kHz, very low dielectric loss (tan δ = 0.0080), and breakdown strength increased to 196.6 MV·m −1 . In addition, the energy storage density and the charging and discharging efficiency of the composite films reach 3.685 J⋅cm −3 and 94.89%, respectively. The 3D network BT structure provides a continuous polarization path for the composite films, significantly increasing the dielectric constant and breakdown strength. The engineered composite films have a wide application prospect in the field of high-power energy storage and flexible electronic devices.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Junqiang Zhao,Qiqi Wang,Jing Yang,Yi Li,Zhongyun Liu,Luqing Zhang,Yiping Zhao,Shuxiang Zhang,Li Chen
In order to reduce membrane fouling and fabricate highly selective membranes with high water permeability, three kinds of comb-shaped amphiphilic triblock copolymers , poly[poly(ethylene glycol) methacrylate]- b -poly(methyl methacrylate)- b -poly[poly(ethylene glycol) methacrylate] (PPEGMA- b -PMMA- b -PPEGMA, named as PEME), were synthesized via RAFT polymerization and used as modifiers to prepare poly(vinylidene fluoride) (PVDF) blend membranes by the non-solvent induced phase separation (NIPS) method. The effects of PEME with different hydrophilic PPEGMA length on the surface chemical structure, morphology, permeability and antifouling properties of the blend membranes were investigated detailedly. The results from ATR-FTIR and XPS tests confirmed that hydrophilic PPEGMA segments in PEME were enriched on the membrane surface due to PEME induced surface segregation. With the increase of the hydrophilic chain length in PEME, the mean pore size, porosity and roughness of the blend membrane increased gradually, indicating the modifier had the ability to adjust the membrane pore structure. Compared with pure membrane, the hydrophilicity of blend membranes was enhanced and the protein adsorption of representative bovine serum albumin (BSA) decreased obviously. After three cycles of the water-BSA-water, the M-2 blend membrane exhibited high BSA solution flux (150 L·m −2 ·h −1 ), excellent rejection (up to 99.99%) and satisfactory antifouling performance. In addition, compared with the recently published PVDF blend ultrafiltration membranes prepared by NIPS method, the M-2 membrane with surface small pore size, high flux, high selectivity and low fouling properties overcame the permeability-selectivity trade-off for BSA solution separation and showed a good application prospect for efficiently protein separation.
研究领域:
材料科学
·
膜技术
·
高分子化学
·
分离科学
·
生物医学工程
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Xiaoxue Liao,Wenxi Hu,Jiaqing Su,Sha Cheng,Cheng Huang,Shihan Hu,Zhuowei Wang,Xiao Chen,Chunxia Zhao,Pengchao Zhang
Developing gel polymer electrolytes (GPEs) is a promising strategy to mitigate safety concerns caused by the leakage of liquid electrolytes in lithium metal batteries (LMBs). However, fabricating a membrane with high thermal stability, whose derived GPE also maintains good electrochemical performance, remains a major challenge. Herein, we report a composite membrane, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/poly(m-phenylene isophthalamide) (PMIA), with excellent thermal stability and uniform nanoporous structure for high-performance GPE of LMBs. The PVDF-HFP/PMIA composite membrane, featuring a uniform pore size of 110 nm, is prepared by a double-sided solvent–nonsolvent exchange process via microfluidic technique. The incorporation of PMIA achieves the enhanced heat resistance of the composite membrane with a superior size retention of 86% after continuous heating at 250 °C for more than 360 min. The PVDF-HFP/PMIA GPEs-based Li||Li symmetric cells display stable voltage across various current densities and cycles for 600 h at 0.5 mA cm–2. Moreover, the morphology of the lithium anodes after 100 h shows uniform lithium deposition, demonstrating excellent suppression of lithium dendrite growth. The Li||LFP cells assembled with PVDF-HFP/PMIA-based GPEs deliver a high discharge capacity of 134.5 mAh g–1 at 5 C. The as-prepared heat-resistant GPEs membrane thus offers great potential for improving the safety performance of LMBs.
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高影响因子
Defence Technology
·
2025
·
IF 5.9
Hao Wang,Chenming Li,Enjie Zhang,Yapeng Ou,Xiaoxia Ma
Hexanitrohexaazaisowurtzitane (CL-20) is a high-energy explosive widely used in composite explosives and propellants, but its application is severely limited by thermally induced ε-to-γ polymorphic transition and high solubility in nitrate ester solvents. The transition reduces energy density and increasing sensitivity, and the solubility causes dissolution-recrystallization defects (e.g., voids, compositional inhomogeneities) during long-term storage. To address these issues while preserving its high energetic performance, this study developed a polydopamine@polyvinylidene fluoride (PDA@PVDF) dual-coating strategy, fabricating CL-20 composite particles with a core-shell structure. In-situ X-ray diffraction (XRD) results confirmed that the ε-to-γ phase transition temperature of CL-20 increased from 110 °C (pristine CL-20) to 140 °C. Meanwhile, the CL-20@PDA@9%PVDF sample exhibited the lowest solubility and the best solvent resistance, and the solubility of CL-20 in nitrate ester solvents was drastically reduced from 0.229 g/100 g to 0.026 g/100 g, an 88.6% decrease, effectively enhancing its structural and solvent resistance stability. For energetic performance, when mixed with aluminum powder at a 7:3 mass ratio, the CL-20@PDA@9%PVDF/Al composite achieved a combustion heat of 8275 J/g, 8.7% higher than that of the unmodified Al/CL-20 system (7611 J/g). Combustion pressure tests showed that although the modified system exhibited slightly lower initial peak pressure and pressure rise rate due to dilute CL-20 content from inert coatings, it presented a unique "delayed enhancement" effect, with pressure gradually surpassing and ultimately exceeding that of the unmodified system in the middle and late combustion stages, enabling more sustained high-pressure output. This work realizes the synergistic optimization of CL-20’s polymorphic/solvent stability and energetic performance, providing a feasible and scalable approach for the practical application of CL-20 in advanced energetic systems.
研究领域:
含能材料
·
材料科学
·
应用化学
·
热稳定性工程
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