JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Bozhen Wu,Xuejiao Song,Yongkang Meng,Yanghua Song,Zhongpu Shi,Yan Liu
Advances in electronic device miniaturization and system integration, alongside rapid progress in wireless communication technologies, have significantly amplified electromagnetic interference problems. This development necessitates the creation of high-performance electromagnetic shielding materials. This study presents a new design for electromagnetic shielding composites comprising an asymmetric structure of cobalt-coated nylon 6 microspheres (PA6@Co), silver nanowires (AgNWs) and poly(vinylidene fluoride) (PVDF). Specifically, PA6 microspheres were prepared using anionic reaction-induced phase separation, and cobalt was plated on their surfaces, thereby forming magnetic PA6@Co microspheres. The magnetic saturation intensity of these microspheres can reach 80 emu/g. The asymmetric PA6@Co/AgNWs/PVDF electromagnetic shielding composites with absorption-dominant characteristics were constructed using AgNWs as the conductive filler and PVDF as the matrix. The results show that within the X-band (8.2–12.4 GHz) range, the PA6@Co/AgNWs/PVDF composite material exhibits excellent electromagnetic shielding performance. Its maximum electromagnetic shielding efficiency (SET) reaches 48.1 dB, and the absorption coefficient (A) is 0.8, demonstrating a distinct absorption-dominant shielding characteristic. This asymmetric structural design strategy solves the limitations of traditional shielding materials and provides a new approach to developing environmentally friendly, efficient electromagnetic shielding materials.
研究领域:
材料科学
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电磁功能材料
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纳米复合材料
·
聚合物复合材料
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DOI
高影响因子
Advanced Science
·
2025
·
IF 14.1
Jiawei Gu,Qiongle Peng,Xuanqi Zhong,Yi Zheng,Zhiqiang Ma,Xiaoxian Song,Ruihuan Zhang,Bao Liu,Yanhu Zhang,Zhengbao Yang
The pursuit of multifunctional sensors has intensified due to their potential for integrated, efficient operation. However, realizing a flexible material that combines simplicity in the fabrication process with high performance and multifunctionality remains a formidable challenge. In this study, a multi-interface heterostructured nanofiber membrane composed of Polyvinylidene fluoride (PVDF), HfO 2 , and nano-copper is fabricated, leveraging the synergistic interplay of piezoelectric and piezo-phototronic effects for flexible, self-powered sensing. The incorporation of hafnium oxide (HfO 2 ) and nano-Cu enhances the crystallinity of the piezoelectric β -phase and improves the dielectric properties, substantially boosting electromechanical performance. The resultant piezoelectric sensor achieves an output voltage of 15V and maintains stability over 5000 cycles at 5 Hz, enabling precise detection of human motions. Meanwhile, the PVDF/HfO 2 -based photodetector exhibits broadband sensitivity (from near-UV to near-IR), high photoresponsivity (5.67 mA W −1 ), high detectivity (4.14×10 11 Jones), and rapid response (600 µs rising, 53 µs falling). Critically, the device demonstrates a 28.6% current enhancement under simultaneous light and pressure, highlighting a strong piezo-phototronic effect. This work presents a multifunctional fiber film for dual-mode sensing (pressure & light), with promising applications in wearable electronics and aerospace systems. Its straightforward fabrication and high performance offer a viable pathway toward next-generation, flexible, self-powered sensors.
研究领域:
材料科学
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柔性电子学
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传感器与探测器
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纳米技术
·
光电子学
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产品关联
DOI
PubMed
高影响因子
COMBUSTION SCIENCE AND TECHNOLOGY
·
2025
·
IF 1.5
Haitian Gong,Daolun Liang,Mengxia Sun,Jianzhong Liu
Boron (B) particles offer the advantage of high energy density for ramjet applications but suffer from challenges including difficult ignition, low combustion efficiency, and agglomeration. This study employed ammonium perchlorate (AP), a common propellant oxidizer, and polyvinylidene fluoride (PVDF), a fluorine-containing compound, to improve the ignition and combustion characteristics of boron particles. Two types of samples were prepared: boron particles coated with AP, and boron particles mechanically mixed with PVDF. Thermal analysis indicated that both AP coating and PVDF addition facilitated the thermal decomposition of boron, significantly lowering its decomposition temperature. Laser ignition experiments under two different atmospheres revealed that AP coating consistently intensified boron combustion. The ignition delay time was reduced and the combustion temperature was increased. However, the effectiveness of PVDF addition may be influenced by the ambient oxygen concentration. Consequently, both AP coating and PVDF addition are advantageous for enhancing boron combustion.
研究领域:
含能材料
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燃烧科学
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推进剂技术
·
材料工程
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产品关联
DOI
高影响因子
POLYMERS & POLYMER COMPOSITES
·
2015
·
IF 0.271
Zhao-Cai Zhang,Chun-Gang Guo,Jing-Lie Lv
Poly(vinylidene fluoride) (PVDF) membrane was successfully prepared by PVDF/tributyl citrate (TBC) via thermally induced phase separation (TIPS). TBC was used as diluent for membrane preparation, which is citric acid esters non-toxic, non-odorous, easy to prepare and comparatively cheap. The effects of PVDF content on crystallinity of PVDF and porous structure were investigated by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), mercury porosimetry and pore size analyzer instrument. The results showed that PVDF was most able to crystallize and the membrane pore size became more uniform and smaller at higher polymer content.
研究领域:
材料科学
·
膜技术
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DOI
高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2025
·
IF 1.8
Yongfeng Zhao,Zhenyang Cao,Xiaochen Wu,Chunyan Sun
In this paper, a highly selective solid-phase composite fluorescent sensor (BCDS@PVP/PVDF) for detecting iodide ions (I−) was synthesized. This sensor was prepared by electrospinning carbon dots (CDs), polyvinylpyrrolidone (PVP), and polyvinylidene fluoride (PVDF) into a composite nanofiber membrane. Scanning electron microscope (SEM) morphology analysis indicated that the addition of carbon dots had no effect on the spun membranes. Fourier transform infrared spectrometer (FTIR) and X-ray photoelectron spectrometer (XPS) analyses demonstrated that the carbon dots were successfully loaded onto the electrospun membranes. The I− detection experiments demonstrated that the fluorescence quenching phenomenon occurred within the range of 0-100 mg/L, and a linear relationship was observed within the range of 0.3-0.5 mg/L. The detection limit was at 0.17 mg/L. The fluorescence quenching mechanism was initially attributed to dynamic quenching by UV absorption and fluorescence lifetime. This study provides a new approach for the development of portable fluorescence sensors for I− detection.
研究领域:
分析化学
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材料科学
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环境监测
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生物传感
·
纳米材料
·
荧光分析
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产品关联
DOI
高影响因子
ChemNanoMat
·
2026
·Vol. 12
·期 1
·e202500571
·
IF 2.6
Jufei Xu,Jie Yu,Neng Hu,Qi Zhong
The continuous existence of antibiotic pollutants presents a grave threat to the ecological environment. This study aims to develop an efficient and stable hybrid photocatalytic membrane for degrading tetracycline (TC) in aqueous solutions. Inspired by setaria, the novel hybrid ZIF-8@ZnO/polyvinylidene fluoride (PVDF) membranes (PZM) are successfully prepared by in situ growth of ZnO nanowires on PVDF membranes via hydrothermal synthesis, followed by incorporation of the metal–organic framework material ZIF-8. The preparation conditions for ZnO nanowires are systematically optimized. Results indicate that the prepared ZnO/PVDF membranes (PZ) exhibit optimal photocatalytic activity when the ZnO precursor concentration is 0.5 wt% and the hydrothermal growth time is 2 hr. Additionally, with the increased stirring rate of the reaction system, the superior piezoelectric properties of the PVDF nanofiber membranes are applied to accelerate TC degradation. Most importantly, compared to pure PZ membranes, the hybrid PZM membranes significantly enhance the photocatalytic degradation efficiency of TC. Under visible light irradiation, the hybrid PZM nanofiber membranes achieve TC degradation efficiency of 75%, which is increased by 66% compared to that of ZnO powder. This investigation offers a potentially viable approach for the design and construction of hybrid photocatalytic materials for effectively eliminating emerging organic pollutants from water.
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DOI
高影响因子
Materials
·
2022
·Vol. 15
·期 13
·4370
·
IF 3.748
Congcong Zhu,Jinghua Yin,Yu Feng,Jialong Li,Yanpeng Li,He Zhao,Dong Yue,Xiaoxu Liu
With the rapid development of modern electrical and electronic applications, the demand for high-performance film capacitors is becoming increasingly urgent. The energy density of a capacitor is dependent on permittivity and breakdown strength. However, the development of polymer-based composites with both high permittivity (εr) and breakdown strength (Eb) remains a huge challenge. In this work, a strategy of doping synergistic dual-fillers with complementary functionalities into polymer is demonstrated, by which highεrandEbare obtained simultaneously. Small-sized titania nanosheets (STNSs) with highεrand high-insulating boron nitride sheets coated with polydopamine on the surface (BN@PDA) were introduced into poly(vinylidene fluoride) (PVDF) to prepare a ternary composite. Remarkably, a PVDF-based composite with 1 wt% BN@PDA and 0.5 wt% STNSs (1 wt% PVDF/BN@PDA−STNSs) shows an excellent energy storage performance, including a highεrof ~13.9 at 1 Hz, a superiorEbof ~440 kV/mm, and a high discharged energy densityUeof ~12.1 J/cm3. Moreover, the simulation results confirm that BN@PDA sheets improve breakdown strength and STNSs boost polarization, which is consistent with the experimental results. This contribution provides a new design paradigm for energy storage dielectrics.
研究领域:
材料科学
·
能源存储
·
电气工程
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2017
·
IF 4.075
Jiabin Feng,Shouhu Xuan,Li Ding,Xinglong Gong
This work reported a high performance flexible magnetically controllable actuator based on magnetoactive elastomer (MAE) and poly (vinylidene fluoride) (PVDF) composite film . The magnetic-mechanic-electric coupling properties of the actuator were systematically investigated by cyclical wrinkle, magnetic bending, and stretching test. The induced charge under a magnetic bending can reach as large as 158 pC even at small magnetic field of 100 mT with the bending angle up to almost 90° within 0.6 s. Moreover, a new model was proposed to theoretically reveal the intrinsic correspondence. The model matches well with the experimental results. Based on this kind of actuator, a magnetically controllable tentacle is developed, which could grasp, transport, and release object by switching the supplied current. Due to the real-time deformation feedback characteristics, this kind of actuators can find wide applications in actively controllable engineering, artificial robotics, and biomedicine.
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2019
·
IF 3.372
Jingyi Cao,Jun Pan,Zhaoliang Cui,Zhaohui Wang,Xiaozu Wang,Enrico Drioli
Membrane condenser (MC) is a novel and promising operation to recover evaporated water from highly humid gas discharged from industrial production. By means of hydrophobic membrane surface, water vapor condensed on membrane retention side, finally be collected. The aim of this paper is to enhance the recovery efficiency of poly(vinylidene fluoride) (PVDF) membrane in MC process. Significantly, coating three kinds of Hyflon ADs onto PVDF membranes effectively improved hydrophobicity of original ones. Among them, Hyflon AD40L/PVDF membrane showed the best membrane and MC performance, the LEP w and water contact angle of which reached 0.43 MPa and 126°, respectively. In terms of dehydration performance in MC, by coated with Hyflon AD40L, water recovery was increased from 7.92% to 18.85%, and condensate water flow (0.35 kg·m −2 ·h −1 ) was twice that of pristine ones (0.15 kg·m −2 ·h −1 ). These results indicate that Hyflon AD composite membrane is a promising candidate for MC process with high efficiency.
研究领域:
环境工程
·
膜科学
·
水资源回收
·
工业废气处理
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2015
·
IF 5.056
Xinzhen Zhao,Huixia Xuan,Yongliang Chen,Chunju He
Polyvinylidene fluoride (PVDF) membranes with ordered and super hydrophilic surface were prepared though the self-assembly of anionic polyelectrolyte sodium alginate and amino functionalized SiO 2 nanoparticles , which were employed to tune the antifouling property of PVDF membrane though ordered and hydrophilic nanoscale surface. The assembly sites were introduced though the reaction between trimesoyl chloride and the reactive groups on plasma treated membrane surface. The physical and chemical properties of the membrane surface were closely related to the assembly number, since the assembled layer could effectively reduce the probability of absorption on membrane surface and entering membrane pores of pollutants to minimize the irreversible fouling at the maximum level. The modified PVDF membranes exhibited excellent hydrophilicity with obviously decreased surface contact angle, which distinctly enhanced the antifouling properties for humic acids and bovine serum albumin with secondary water flux recovery ratio (FRR) of nearly 100%. This paper aimed to provide an effective method to take the advantage of hydrophilic and ordered nanoscale surface to optimize the separation efficiency and antifouling performance of hydrophobic separation membrane .
研究领域:
材料科学
·
环境工程
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Feiyan Zhou,Xinhui Chen,Changsheng Guo,Xi Li,Keyin Ling,Yi Zhang,Maolin Zhang,Yanli Zhao,Pengbi Liu,Xi Liu,Xianhua Zeng,Mengchen Zhang,Haitao Lin,Yao Qian
To address the fouling problem of polyvinylidene fluoride (PVDF) ultrafiltration (UF) membranes, this study embedded β-cyclodextrin (β-CD) from the coagulation bath into the membrane surface and pore walls via non-solvent induced phase separation, thereby enhancing surface hydrophilicity and negative potential and improving the membrane’s fouling resistance. The results showed that when the coagulation bath temperature was 25 °C, and the β-CD content was 0.5 wt%, the resulting β-CD/PVDF UF membrane exhibited optimal performance. It achieved a water permeance of 570 L·m −2 ·h −1 ·bar −1 and a methyl blue rejection rate of approximately 90%. Introducing β-CD increased the membrane surface roughness and made its pores smaller and more uniformly distributed. The contact angle decreased by 15°, and the surface potential became approximately 10 mV more negative (pH = 7). The β-CD/PVDF UF membrane exhibited a relatively high flux recovery ratio during both dye and bovine serum albumin cyclic filtration processes, indicating its excellent antifouling performance. During a 72 h constant-pressure filtration experiment, the contact angle of the β-CD/PVDF UF membrane remained nearly 65°, indicating good hydrophilic stability. Thus, this approach provides a new method for developing high-performance antifouling PVDF UF membranes with potential applications in textile wastewater treatment.
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Bing Xie,Wenpeng Gao,Zhiyong Liu,Kun Guo,Qingping Wang,Shenglin Jiang,Chris Bowen,Huajie Luo,Tianyu Li
Piezocatalysis, the direct conversion of mechanical energy into chemical reactivity, offers a promising route for sustainable pollutant removal and chemical synthesis. However, practical applications require materials that are able to simultaneously deliver high activity, stability, and ease of recycling. Here, we report a flexible micro-nano-engineered BaTiO 3 /PVDF@Ag composite film, whereby {111} BaTiO 3 single-crystal microsheets are embedded in a poly (vinylidene fluoride) (PVDF) matrix and decorated with photo-deposited Ag nanoparticles. This BaTiO 3 /PVDF@Ag composite microstructure design endows the optimal composite with outstanding piezocatalytic performance, including a Rhodamine B degradation rate constant of 0.24 min −1 , a hydrogen peroxide generation rate of 3520 µmol g −1 h −1 , and a CO 2 reduction rate of 535 µmol g −1 h −1 , while maintaining its activity over repeated cycles. Systematic structural, spectroscopic, and electrochemical characterization, together with theoretical simulations, reveal that the ferroelectric BaTiO 3 and electroactive β -phase PVDF enhance the local piezoelectric potential under mechanical stimulation, while the Ag nanoparticles act as efficient electron traps and catalytic sites. Interfacial polarization as resulting from the dielectric and conductivity mismatches between the composite components also reduces charge-transfer resistance and thereby accelerates carrier separation and migration. These synergistic effects enable efficient formation of reactive oxygen species, thereby driving high H 2 O 2 yields and CO 2 reduction. The mechanically robust film can also be easily recovered and reused, demonstrating a viable route to green, high-performance piezocatalysts for environmental applications.
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DOI
高影响因子
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