Polymers
·
2023
·Vol. 15
·期 8
·1906
·
IF 5
Xinxin Liu,Dengbang Jiang,Yuyue Qin,Zhihong Zhang,Mingwei Yuan
With the increasing environmental pollution caused by disposable masks, it is crucial to develop new degradable filtration materials for medical masks. ZnO-PLLA/PLLA (L-lactide) copolymers prepared from nano ZnO and L-lactide were used to prepare fiber films for air filtration by electrospinning technology. Structural characterization of ZnO-PLLA by H-NMR, XPS, and XRD demonstrated that ZnO was successfully grafted onto PLLA. An L9(43) standard orthogonal array was employed to evaluate the effects of the ZnO-PLLA concentration, ZnO-PLLA/PLLA content, DCM(dichloromethane) to DMF(N,N-dimethylformamide) ratio, and spinning time on the air filtration capacity of ZnO-PLLA/PLLA nanofiber films. It is noteworthy that the introduction of ZnO is important for the enhancement of the quality factor (QF). The optimal group obtained was sample No. 7, where the QF was 0.1403 Pa−1, the particle filtration efficiency (PFE) was 98.3%, the bacteria filtration efficiency (BFE) was 98.42%, and the airflow resistance (Δp) was 29.2 Pa. Therefore, the as-prepared ZnO-PLLA/PLLA film has potential for the development of degradable masks.
研究领域:
材料科学
·
环境科学
·
医学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Yangyang Feng,Dingding Zong,Yijie Hou,Xia Yin,Shichao Zhang,Lunyong Duan,Yang Si,Yongtang Jia,Bin Ding
Ultrafine fibrous porous materials obtained by electrospinning technology have broad application prospects in the field of noise reduction. However, the two-dimensional fibrous membranes faced low thickness and dense structure, resulting in a single internal structure and narrow sound absorption band. Here, we report a simple and robust strategy to prepare gradient structured fiber sponges with superelasticity and stretchability by combining humidity-assisted multi-step electrospinning and a unique physical/chemical dual cross-linking method. The prepared gradient structured fibrous sponge has a maximum tensile strength of 169 kPa and can lift a weight 10,000 times its weight without breaking. Besides, the material can still maintain a stable structure after 500 compression cycles at 60% strain. Meantime, the material has lightweight properties (density of 13.8 mg cm −3 ) and hydrophobicity (water contact angle of 152°). More importantly, the gradient change of porosity and pore diameter in the Z direction endowed the fibrous sponge material with high-efficiency absorption of broadband sound waves (with a noise reduction coefficient up to 0.53). The design of this gradient structured fiber sponge opens a new way for the development of ideal sound-absorbing materials.
研究领域:
材料科学
·
声学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 42
·36180-36191
·
IF 3.289
Jiao Tian,Qianli Ma,Xiangting Dong,Wensheng Yu,Ming Yang,Ying Yang,Jinxian Wang,Guixia Liu
A novel nanostructure of {[Eu(BA)3phen + Tb(BA)3phen]/PMMA}//[PANI/Fe3O4/PMMA] Janus nanoribbons with tunable luminescent–electrical–magnetic performance has been successfully fabricated by electrospinning technology using a specially designed parallel spinneret. The morphology and properties of the final products were investigated in detail by X-ray diffractometry (XRD), field emission scanning electron microscopy (FESEM), energy dispersive spectrometry (EDS), biological microscopy (BM), thermogravimetric analysis (TG), a Hall effect measurement system, vibrating sample magnetometry (VSM) and fluorescence spectroscopy. The results reveal that the Janus nanoribbons simultaneously possess excellent luminescent performance, electrical conduction and magnetic properties due to the peculiar nanostructure of Janus nanoribbons. The luminescent–electrical–magnetic trifunctional Janus nanoribbons possess better performances than their counterpart [Eu(BA)3phen + Tb(BA)3phen]/Fe3O4/PANI/PMMA composite nanoribbons which exhibit very weak excitation and emission spectra. The fluorescence intensity of Janus nanoribbons is ca. 70 times higher than that of composite nanoribbons. The color, luminescent intensity, electrical conductivity and magnetic property of the Janus nanoribbons can be tuned by adjusting different amounts of rare earth complexes, PANI and Fe3O4 NPs, respectively. The obtained Janus nanoribbons have potential applications in molecular electronics, microwave absorption and display devices owing to their excellent trifunctionality. Moreover, the construction technique for the Janus nanoribbons is of universal significance for the fabrication of other multifunctional Janus nanoribbons.
研究领域:
材料科学
·
光学
·
电子学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jinhao Gao,Hanwen Wang,Zhiyuan Gao,He Gui,Yanxin Wang,Jianguo Tang,Linjun Huang
The flexibility, wide response range, and ultra-high sensitivity of flexible sensors make them suitable forwearable technology, automated manufacturing, and robotics. The development of raw materials for flexible sensors and the design of their source layer structures can address a range of issues. In this article, we aim to develop flexible sensors for wearable technology by preparing MXene/PVDF@ZIF-8 multilayer nanofiber membranes through electrospinning technology. By incorporating ZIF-8 particles into PVDF fibers through in situ electrospinning technology, flexible sensors with a rough structure were obtained. We similarly employed vacuum filtration technology to introduce MXene nanosheets into PVDF@ZIF-8 nanofibers, further constructing a conductive network with a multidimensional structure in the vertical direction of the film. The performance of the prepared MXene/PVDF@ZIF-8 composite fiber membrane pressure sensor was tested, revealing its wide working range (0–125 kPa), high sensitivity (25.8–77.9 kPa -1 ), load/unload Time (20 ms/30 ms), and strong mechanical stability. Various human movements and lying postures were simulated, confirming that the sensor can effectively provide feedback on external pressure applied to the skin. This also demonstrates the broad application prospects of the flexible sensor in the field of flexible wearables.
研究领域:
材料科学
·
传感器技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yaqing Zhao,Kang Qin,Yaqing Zhou,Wei Liu,Zhixian Gao,Yuan Peng
Organophosphorus pesticides, commonly used in agricultural practices, remain as residues in food and the environment, presenting a significant risk to human health. The removal of these pesticides is essential to protect both human health and the environment. This study presents an in-situ synthesis technique that combines Cu-MOF (ZZU-282) with electrospinning technology to create a novel cross-linked MOF fiber membrane (cross-linked Cu-MOF-PAN FM, with PAN representing Polyacrylonitrile). The coexistence of micro/meso/macropores within the cross-linked Cu-MOF-PAN FM reduces mass transfer resistance and improves its pesticide removal capacity. The half-life for chlorpyrifos removal by the cross-linked Cu-MOF-PAN FM is about 18 s. The Langmuir model estimates the theoretical maximum removal capacity for chlorpyrifos at 208.3 mg g –1 . Additionally, the removal performance of organophosphorus pesticides is tested in simulated water samples, with results showing that over 70 % of six mixed organophosphorus pesticides are removed within 10 min using the proposed FM. The cross-linked Cu-MOF-PAN FM demonstrates superior efficiency in both rapid and sustained removal of organophosphorus pesticides from water, offering promising potential for environmental applications and pollutant removal. Moreover, the cross-linking process enhances the membrane’s resistance to organic solvents. This in-situ growth and cross-linking method offers a promising approach for fabricating MOF fiber membrane composites.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD ENGINEERING
·
2024
·
IF 5.3
Wenna Wang,Bohao Xu,Li Cai,Lijun Zhang,Zuju Shu,Zhongbo Li
Food freshness indication labels have a broad application prospect in the field of food safety because of monitoring the freshness of food and its environment in real time, which can assist consumers in identifying the freshness of food. Herein, large-area nanofiber films with colourimetric and fluorescent dual-channel indication were prepared via electrospinning technology using fluorescein isothiocyanate (FITC) with biogenic amine response as the indicator. FITC/PVA nanofiber films resulted in enhanced thermal stability and mechanical properties. With the increase of ammonia concentration in the atmosphere, the FITC/PVA composite films exhibited a gradual change in colour from grey to orange under daylight conditions. Furthermore, the green fluorescence was observed to gradually intensify under ultraviolet (UV) light. The results of shrimp freshness monitoring demonstrated obvious colour changes under both daylight and UV light condition, which the colour of the nanofiber films underwent a transformation from yellow to dark orange (ΔE = 46.18) under daylight and from green to bright yellow-green (ΔE = 41.77) under UV light after 1 day at 25 °C. The principal reason for the colour change of the films is the release of organic amine molecules during the spoilage process of fresh shrimp, leading the deprotonation of FITC under alkaline atmosphere and the change in its molecular conformation, resulting in the colour change and fluorescence enhancement of FITC under daylight. This colourimetric and fluorescent dual-channel response nanofiber films has the potential to be utilized in the field of food freshness monitoring to ensure the safety of the food supply.
研究领域:
食品安全
·
材料科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2021
·
IF 6.617
Zhouqiao Wei,Xiangdong Kong,Jingzhen Cheng,Hua Zhou,Jinhong Yu,Shaorong Lu
With the integration level and power density of electronic devices increasing, highly thermally conductive yet electrically insulating polymer composites are growing demands for thermal management applications. Herein, we report a composite film with a “pearl-necklace-like” structure composed of polyvinyl alcohol (PVA) and alumina (Al 2 O 3 ) by electrospinning technique , which exhibits enhanced high thermal conductivity , excellent electrical insulation, and outstanding flexibility simultaneously. The in-plane thermal conductivity of the PVA/Al 2 O 3 composite film with 65 wt % Al 2 O 3 loading reaches 31.69 W m -1 K -1 . Meanwhile, the composite films still retained highly electrical insulation (volume resistivity 1.94 × 10 11 Ω·cm) and presented excellent stability in a wide range of temperatures before and after heating and cooling cycles. This study provides a practical route to prepare the polymer composites with high thermal conductivity and excellent electrical insulation for thermal management applications in modern electronic devices.
研究领域:
材料科学
·
热管理工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Wen Zhou,Xi Yu,Yang Li,Wenling Jiao,Yang Si,Jianyong Yu,Bin Ding
Waterproof and breathable membranes (WBMs) are highly demanded worldwide due to their promising applications in outdoor protective clothing, medical hygiene, and electronic devices. However, the design of such materials integrated with environmental friendliness and high functionality has been considered a long-standing challenge. Herein, we report the green-solvent-processed polyamide fibrous membranes with amphiphobicity and bonding structure via ethanol-based electrospinning and water-based impregnating techniques, endowing the fibrous membranes with outstanding water/oil/dust-resistant and good breathable properties. The developed green smart fibrous membranes exhibit integrated properties with robust water and oil intrusion pressures of 101.2 and 32.4 kPa, respectively, excellent dust removal efficiency of above 99.9%, good water vapor transmission rate of 11.2 kg m–2 d–1, air permeability of 2.6 mm s–1, tensile strength of 15.6 MPa, and strong toughness of 22.8 MJ m–3, enabling the membranes to protect human beings and electronic devices effectively. This work may shed light on designing the next generation green smart fibrous WBMs for protective textiles.
研究领域:
材料科学
·
纺织工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMBUSTION AND FLAME
·
2021
·
IF 4.185
Chun Zhang,Huiqing Mao,Rui Cui,Xiandie Zhang,Jing Yang,Jie Ji,Xiang Zhou
High content of active component, low electrostatic sensitivity and superior long-term storage stability endow n-Si powder unique advantages for application in nanoenergetic composites. In this study, hydrophobic and corrosion-resistant Si@PVDF nanostructured energetic films with different stoichiometric ratios are successfully prepared by electrospinning technique . The energetic characteristics are systematically investigated in terms of thermal analysis, open-air combustion and constant-volume combustion. The results show that Si@PVDF films are microscopically composed of fibers with diameters of about 200–300 nm. With the increase of stoichiometric ratio, more and more n-Si aggregates are found on the surface of fibers. When Si@PVDF is stored in deionized water (50 °C) or NaOH solution (50 °C, 3 mol/L) for 72 h, around 100% and 73.3% of n-Si is retained. Si@PVDF can be thermally ignited, with appreciable heat and pressure output, and the combustion behaviors are strongly affected by the stoichiometric ratio and the environmental conditions. As a comparison, physically mixed Si/PVDF cannot maintain a self-sustained combustion. Through the coupled thermal analysis and mass spectrometry analysis, combined with the morphological and structural characterization of the solid residues , the reaction mechanism of Si@PVDF at a low heating rate is preliminarily obtained.
研究领域:
材料科学
·
能源材料
·
燃烧化学
✓ 已验证
DOI
高影响因子
MATERIALS LETTERS
·
2018
·
IF 2.687
Geshuang Chen,Xiang Yao,Qichen Cao,Shouxiang Ding,Jinde He,Suqing Wang
To solve the problems of insufficient conductivity and volume expansion of SnS 2 during cycling when applied as anode for sodium-ion batteries (SIBs), we designed flexible and self-standing SnS 2 /carbon nanofibers (SnS 2 /CNFs) film by electrospinning technology and post sulfuration, in which the ultrafine SnS 2 nanoparticles (∼5 nm) are preganated in the carbon nanofibers. The three-dimensional carbon nanofibers serve as flexible scaffold with high electrical conductivity to buffer the aggregation and pulverization of SnS 2 particles. The obtained flexible SnS 2 /CNFs film can be directly used as anode for SIBs without adding binder and carbon additive, and exhibits excellent electrochemical performance. The SnS 2 /CNFs delivers a high capacity of 570.8 mAh g −1 at 0.2 A g −1 . Even at a high rate of 5 A g −1 , a high capacity of 247.1 mAh g −1 is still achieved. It also maintains 378.9 mAh g −1 after 100 cycles at 0.5 A g −1 .
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Minghui Zhang,Xiaoyan Chen,Jiangman Sun,Zhen Qin,Biao Zhao,Jinglong Li,Yue Xing,Xiubing Liang,Han Zhu,Kai Pan
Developing semiconductor ceramic materials with lightweight, outstanding stability, and high-performance electromagnetic wave (EMW) absorption are attractive for harsh environments. Due to thermal and chemical stability, designable microstructure, and tunable dielectric property , microstructured silicon carbide (SiC) ceramics offer promising potential as excellent EMW absorbers while limited by the scarce fabricating methods. Here, a simple coaxial electrospinning technology and the high-temperature calcination process are developed for the first time to fabricate hollow SiC microspheres (HSCMs) for EMW absorbers. Owing to the sizeable SiC-free space interface in the shell and internal void, the inner hollow structure also endows HSCMs with excellent EMW absorbing properties. By comparing with the composite of 40 wt% solid SiC microspheres (SSCMs)/paraffine, it is found that the 40 wt% HSCMs/paraffin composite exhibits superior dielectric properties and a minimum reflection loss (RL) value of − 61.6 dB at 7.7 GHz and 3.4 mm thickness, associated with the most considerable adequate absorption bandwidth of 4.9 GHz (from 12.6 to 17.5 GHz) at 1.9 mm thickness. This work gives rise to a handy method for fabricating hollow SiC with lightweight and high-efficiency EMW absorption. It will potentially boost the development of next-generation EMW absorbers for harsh environment applications.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Panyu He,Xinglan Fu,Chenghao Wang,Yujiang Gou,Fengjing Cao,Hongwu Tian,Shixiang Ma,Yiyi Liang,Ting An,Guanglin Li
Tea infusion, as one of the most popular beverages, is favored by people around the world. However, tea plants accumulate heavy metals from the soil during growth, which are gradually transferred to the leaves and subsequently decomposed into the tea infusion after soaking in hot water. Long-term consumption of tea infusion containing heavy metals may lead to severe health issues, such as liver dysfunction and cancer. Therefore, rapid, precise, and highly sensitive detection of heavy metals in tea infusion becomes crucial for human health. Traditional methods, such as atomic absorption spectroscopy (AAS), suffer from long detection cycles, high costs, and the risk of secondary pollution from chemical extraction reagents. Thus, this paper presents a method, using laser-induced breakdown spectroscopy combined with electrospinning technology (LIBS-ES), to detect trace amounts of Cr and Cu in tea infusion. The electrospun nanofiber membranes (ENM) were modified with gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs), achieving ultra-sensitive detection of Cr and Cu. The experiment results show that the limits of detection for Cr and Cu are 5 μg/L and 10 μg/L, respectively. Moreover, this method was successfully applied to the detection of Cr and Cu in seven different types of tea infusion, achieving recovery rates of 99 %-106 % and 99 %-108 %, respectively. The method demonstrated good performance even under the interference of other ions at various concentrations, providing a reference for the rapid and highly sensitive detection of heavy metals in tea infusion.
研究领域:
食品科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）