COMPOSITES SCIENCE AND TECHNOLOGY
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2022
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IF 9.879
Bingjian Deng,Lei Fang,Kuanjun Fang,Xinxin Han,Yueyao Liang
Compared with traditional clothing, wearable textiles with physiotherapy were a breakthrough innovation, among which fiber materials with good mechanical properties and excellent electrical conductivity were key. Herein, we prepared profiled conductive composite fibers (PCFs) with Tai Chi structure based on the polyacrylonitrile (PAN) and carboxylic multiwall carbon nanotubes (MWCNTs) by wet spinning, achieving the synchronous improvement of mechanical and conductivity under a small quantity of conductive fillers doped. By changing the angle of spinning, the migration of MWCNTs could be induced and controlled, realizing the preparation of Tai Chi structure. The PAN and MWCNTs were enriched into the axial unilateral of fibers respectively, similar to the Tai Chi structure, when the spinning angle was 30°. The special Tai Chi structure could concentrate carriers to form a continuous and interpenetrating conductive path and retained the good flexibility and tensile strength of composite fibers. The PCFs prepared with 6 wt% MWCNTs loading possessed 51.6 S/cm and 291 MPa. The wearable electric heaters prepared by PCFs could get a comfortable temperature (30 °C ∼ 60 °C) under the safe voltage condition and had good repeatability and stability, which was expected to provide valuable reference for the development of thermotherapy textiles.
研究领域:
材料科学
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医学工程
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纺织科学
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DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
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2022
·Vol. 30
·期 11
·4835-4847
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IF 4.705
Guo Wei,Guo Ruibin,Pei Hebing,Wang Bingjie,Liu Nijuan,Mo Zunli
Electrospinning nanofiber membranes (ENMs) have received widespread attention owing to their favorable permeability, easy preparation, low energy consumption and stability in wastewater treatment technologies. Polyacrylonitrile/polyethyleneimine (PAN/PEI) ENMs were prepared by electrospinning and evaluated in batch experiments for their removal of heavy metal ions (Pb (II), Cr (VI) and Cu (II)) in water. The adsorption capacities of PAN/PEI ENMs for Cr (VI) ions, Cu (II) ions and Pb (II) ions can reach up to 262 mg g −1 , 325 mg g −1 and 346 mg g −1 , respectively. The adsorption procedure follows the pseudo-second-order dynamics model and Langmuir model. In dynamic experiments, the removal rates of Pb (II) ions, Cr (VI) ions and Cu (II) ions can reach 80%, 100% and 80%, indicating that it has excellent removal efficiencies for heavy metal ions. At the same time, PAN/PEI ENMs have high separation ability and excellent flux for oil–water mixtures and oil-in-water emulsions. PAN/PEI ENMs also have the advantages of simple preparation, easy recovery and no secondary pollution to the environment, indicating that PAN/PEI ENMs have some prospects for application in wastewater treatment.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
FIBERS AND POLYMERS
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2021
·Vol. 22
·期 4
·972-980
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IF 2.153
Gui Cheng,Zhang Yike,Jin Rui,Song Yang,Li Rong,Xing Yanjun
Most previous work on the preparation of electrode materials has usually used to grind carbon nanofibers and add non-reactive binders, which lead to limited surface area and lower electrochemical performance in electrode materials. In this study, porous carbon nanofibers were prepared from non-miscible PAN/PVDF polymer blends by electrospinning and carbonization to obtain electrode materials with high performance and high specific surface area. In the process of preparing electrode materials, carbon nanofibers can be directly prepared as electrodes with high-performance and flexibility without adding any inactive materials, such as polymer binders or electronic conductors. Results showed that PF-C-50 has the maximum specific surface area of 773 m 2 g −1 and the specific capacitance as high as 181 F/g at the current density of 0.4 A/g and 134 F/g at the current density of 1 A/g. PF-C-80 exhibits a specific capacitance as high as 156 F/g at the current density of 0.4 A/g and 117 F/g at the current density of 1 A/g with the smallest IR drop and R ct . The prepared porous carbon nanofiber electrode improves the electrochemical performance and flexibility of the electrode material. These unique structures and characteristic materials can be excellent candidates for high-performance flexible electrodes, laying a good foundation for wearable devices.
研究领域:
材料科学
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能源存储与转换
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DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2023
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IF 5.1
Xiangyu Wang,Jia Tong,Jun Ma
A modified membrane-loaded iron composite PDA/PAN/BC-Fe 0 (PPBN) was successfully prepared using sisal fibre biochar (SF-BC) and poly(dopamine) (PDA) functionalized modified hydrophilic porous polyacrylonitrile (PAN) membranes and used to support nano zero-valent iron (NZVI) for the first time. The effect of different reaction conditions and interfering factors on the degradation performance for the removal of tetracycline (TC) was investigated. In addition, the cycling and stability performance of PPBN was assessed. The agglomeration and release of NZVI particles were effectively inhibited, and the reactivity and stability of PPBN were enhanced. The results showed that under the same reaction conditions, the removal efficiency of PPBN for TC could reach 90.16% in 120 min and has increased by 36.16% compared with NZVI. After 6 regeneration cycles, the removal efficiency of TC by PPBN only decreased by 10.22%. The reaction kinetic process conformed to the two-parameter pseudo-first-order kinetic model , and three degradation pathways for TC removal were proposed. The removal mechanism included the synergistic action of physical adsorption , chemical oxidation and reduction, and the key role was played by redox reactions induced by hydroxyl radicals (∙OH) and superoxide radicals (∙O 2 − ). The results of the study provide a simple, efficient and stable material for the treatment of antibiotic wastewater.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
RSC Advances
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2023
·Vol. 13
·期 50
·34947-34957
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IF 3.9
Lei Luo,Zhaorui Wen,Guo Hong,Shi Chen
Aqueous zinc ion batteries (AZIBs) are the promising candidate for energy storage where safety and low cost are the major concerns. However, the uneven and random electrodeposition of Zn has become a serious impediment to the deep recharging of AZIBs. Conventional modifications on zinc substrate can promote homogenous zinc deposition initially, but not sustainably. Here, an oxidized polyacrylonitrile (OPAN) membrane with a conjugated planar structure is proposed as a zinc ion battery separator. This separator can continuously regulate the growth of Zn with (002) texture to inhibit dendrites. In addition, the separator has a fast Zn2+ ion transfer, which can spontaneously repel SO42− and relieve side reactions. As a result, the Zn-symmetric batteries show cycle lifetime of more than 1300 hours at 1 mA cm−2 and 1 mA h cm−2, and kept stable for more than 160 hours even at 65% high discharge of depth (DOD). The MnO2//Zn full celled assembled with an OPAN separator had very little decay for 5000 cycles at 2 A g−1. This work provides a new method for realizing the continuous and uniform deposition of Zn metals, which also provides a new route for batteries with metallic anodes.
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DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
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IF 2.7
Fengbin Liu,Han Wang,Maolin Liu,Zehui Lu,Zhenpei Lin,Ying Chen
Currently, the problem of air pollution is getting more and more serious, especially the pollution of tiny solid particles (PM, particulate matter) in the air, which poses a great challenge to the environment and human health. Therefore, it is particularly important to develop air filtration materials with high filtration efficiency and low resistance to meet this challenge. In this study, we propose to prepare air filtration membranes by centrifugal jet electrospinning technology, design multifactorial orthogonal coupling experiments, and investigate the effects of key process parameters of centrifugal jet electrostatic spinning, including solution concentration, airflow rate, rotational speed, and voltage, on the fiber diameter and uniformity by applying the polar analysis of variance and analysis of variance. PAN-BaTiO 3 electret nanofiber filtration membranes with high efficiency and low resistance were prepared by combining the optimized process of centrifugal blowing electrospinning. Various characterization methods (tensile test, water contact angle test, surface charge test, filtration test) were used to evaluate the effect of different BaTiO 3 electret contents (0%, 0.1%, 0.5%, 1%) on the comprehensive performance of the filtration membranes, and the electret filtration efficiency of the electret filtration membranes prepared by the present process reached as high as 96.56% with a pressure drop of 29 Pa.
研究领域:
材料科学
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环境科学
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纳米技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yijun Fu,Jiahao Liu,Junyi Zou,Sijun Xu,Yanhong Wei,Wei Zhang,Dawei Li
The power supply system is an important part of modern electronic equipment. Traditional batteries have disadvantages such as large volume and poor flexibility. Nanogenerators possess characteristics such as miniaturization, sustainable power supply, and independence from external energy sources. In this work, a piezo-triboelectric hybridized nanogenerator is developed. Barium titanate (BaTiO 3 ) and MXene (Ti 3 C 2 ) are incorporated into the electrospinning process of polyacrylonitrile (PAN), resulting in an electrospun PAN/BaTiO 3 /MXene nanofibrous membrane with significantly enhanced piezoelectric properties in comparison with the pure PAN fibrous membrane. Meanwhile, the electronegative properties of the PAN/BaTiO 3 /MXene nanofibrous membrane are augmented as the negative layer during contact and separation friction. The piezoelectric output voltage of the PAN/BaTiO 3 /MXene nanofibrous membrane reaches up to 6.4 V. When a nickel-copper conductive fabric is used as the positive layer, the piezo-triboelectric hybridized nanogenerator produces an output voltage of 11.3 V, an output current of 300nA, and a maximum output power density of 3.4 mW·m −2 over a contact-separation area of only 2 × 2 cm 2 . In addition, given that MXene itself exhibits excellent photothermal conversion ability, the PAN/BaTiO 3 /MXene nanofibrous membrane can be quickly heated up to about 54℃ under near-infrared irradiation at a power of 0.8 W·cm −2 , highlighting its potential in photothermal-therapy applications.
研究领域:
材料科学
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纳米技术
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能源技术
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传感器技术
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Ruibin Guo,Yue Zhong,Bingjie Wang,Li Li,Wenjing Qin,Yanchun Tan,Zhiwei Zhao,Nijuan Liu,Zunli Mo
The use of tetracycline antibiotics in industry, healthcare, animal husbandry, agriculture, and aquaculture has resulted in excessive concentrations in a variety of aquatic environments. In this work, PAN/Bi 2 WO 6 /Cu 2 O nanofibrous membranes (PBC ENMs) with photocatalytic degradation performance were successfully prepared using electrostatic spinning technique, and the morphology of catalysts and PBC ENMs were characterised by SEM, BET and UV–Vis. The results demonstrated that the prepared nanofibrous membranes could achieve 97.05 % photocatalytic degradation of TC under visible light, and the degradation efficiencies of its derivatives, chlortetracycline (CTC) and oxytetracycline (OTC), reached 90.87 % and 85.12 %, respectively. Free radical trapping experiments and mechanistic analyses showed that·O 2– is the main active factor in the degradation process. The highest degradation rate of 97.05 % was achieved at initial pH = 7.2.PBC ENMs adsorbed above 87.5 % after six cycles of the experiment. The highest degradation rate of 97.05 % was achieved at initial pH = 7.2 PBC ENMs adsorbed above 87.5 % after six cycles of the experiment. Based on the above advantages, the preparation process of PBC ENMs is simple, low-cost and has good catalytic effect, which provides a simple and efficient treatment means for the treatment of TC wastewater and has a broad application prospect.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
FIBERS AND POLYMERS
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2022
·Vol. 23
·期 12
·3386-3397
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IF 2.347
Shen Baosheng,Du Chunxiao,Wang Wei,Yu Dan
With the increasingly serious water pollution and human health problems caused by oily wastewater, the task of developing new and efficient oil-water separation materials is becoming urgent. Electrospun nanofiber membranes have been applied to this field due to their high porosity and uniform pore size, but the preparation and mechanism of hydrophilic nanofiber membranes, which can be used in the part of underwater oleophobicity still need to be explored. Herein, we firstly prepare nanofiber membranes containing sulfhydryl groups on the surface by electrostatic spinning of polyacrylonitrile and γ-mercaptopropyltriethoxysilane together, which becomes active sites for the grafting of dimethyldiallylammonium chloride monomers by thiol-ene click chemistry. The resulting modified membranes exhibited hydrophilicity in air and oleophobicity in water, and demonstrated good emulsion separation performance of extremely high permeation flux (742.6 L/(m 2 ·h)), excellent separation efficiency (>96 %), as well as outstanding antifouling performance thanks to the existence of hydration layer on the membrane when underwater. In addition, the membranes can maintain stable hydrophilicity and underwater oleophobicity in complex environments, and display good acid and alkali resistance.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Drug Design Development and Therapy
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2022
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IF 4.319
Yuxuan Zhu,Ting Yuan,Yuan Zhang,Jianyou Shi,Lan Bai,Xingmei Duan,Rongsheng Tong,Lei Zhong
Purpose Esophageal squamous cell carcinoma (ESCC) is a refractory malignancy with high morbidity and mortality. Thus, there is an urgent need to find effective targets and agents for ESCC treatment. The purpose of this study was to assess the anti-ESCC effects of a pan-histone deacetylase (HDAC) inhibitor AR-42 and its mechanisms of action.Methods Immunohistochemical staining was performed to detect HDAC1 expression in ESCC and adjacent tissue samples. MTT assay, Edu cell proliferation test, flow cytometry, and subcutaneous xenograft were used to assess the anti-ESCC effects of AR-42; furthermore, the antiangiogenic activity of AR-42 was evaluated using endothelial cell migration, invasion, and tube formation assays as well as zebrafish angiogenesis assay. Western blot analysis was performed to explore the underlying mechanism of the anti-ESCC activity of AR-42.Results HDAC1-positive expression was much higher in ESCC cells than in paracancerous tissues, and the elevated HDAC1 expression was a strong indicator of lymph node metastasis and a more advanced TNM stage of ESCC. Moreover, AR-42 potently suppressed ESCC cell growth through cellular proliferation inhibition and apoptosis induction. Moreover, AR-42 displayed a moderate antiangiogenic activity, and it could significantly inhibit the migration, invasion and tubulogenesis of human umbilical vein endothelial cells as well as intersegmental vessel formation in zebrafish at micromolar concentrations. More importantly, the inhibitory activity of AR-42 on ESCC cells and angiogenesis could also be observed in the TE-1 xenograft model. Further studies showed that AR-42 exerts its anti-ESCC effects mainly by upregulating the expression of p21 and blocking the transduction of multiple signaling cascades related to tumor growth, especially Stat3-mediated signaling.Conclusion Overall, AR-42 has significant potency for inhibiting ESCC cell growth and shows moderate effect in suppressing angiogenesis, displaying strong anti-ESCC effects in vitro and in vivo. Thus, AR-42 deserves further evaluation as a potential candidate for ESCC therapy.
研究领域:
肿瘤学
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药理学
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分子生物学
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细胞生物学
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DOI
PubMed
高影响因子
Polymers
·
2024
·Vol. 16
·期 24
·3540
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IF 4.7
Siyang Wu,Luyu Zhang,Xiaochun Qiu,Yuntai Guo,Liangliang Dong,Mingzhuo Guo,Jiale Zhao
This study reports the development of highly conductive and stretchable fibrous membranes based on PVDF/PAN conjugate electrospinning with embedded silver nanoparticles (AgNPs) for wearable sensing applications. The fabrication process integrated conjugate electrospinning of PVDF/PAN, selective dissolution of polyvinylpyrrolidone (PVP) to create porous networks, and uniform AgNP incorporation via adsorption-reduction. Systematic optimization revealed that 10 wt.% PVP content and 1.2 mol/L AgNO3concentration yielded membranes with superior electrical conductivity (874.93 S/m) and mechanical strength (2.34 MPa). The membranes demonstrated excellent strain sensing performance with a gauge factor of 12.64 within 0–30% strain and location-specific sensing capabilities: moderate movements at wrist (ΔR/R0: 98.90–287.25%), elbow (124.65–300.24%), and fingers (177.01–483.20%) generated stable signals, while knee articulation exhibited higher sensitivity (459.60–1316.48%) but significant signal fluctuations. These results demonstrate the potential of the developed conductive porous PVDF/PAN composite fibrous membranes for applications in wearable sensors, flexible electronics, and human-machine interfaces, particularly in scenarios requiring moderate-range motion detection with high reliability and stability. The findings suggest promising opportunities for developing next-generation wearable sensing devices through the optimization of conjugate electrospun fibrous membranes.
研究领域:
材料科学
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电子工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Siyu Chen,Congcong Hao,Mingzhe Cai,Shuaining Cheng,Zhongxin Wang,Ao Wang,Teng Wang,Junbiao Chen,Chenyang Xue
Using PAN as the substrate, a uniform and dense nanofiber membrane was prepared via electrospinning. It features structural stability, lightweight flexibility, and compatibility with sensor integration without compromising racquet performance. • The component design aligns with the principles of functional membrane modification. Doping MXene and PDA@BaTiO₃ into the PAN substrate achieves synergistic enhancement, with 130 mg identified as the optimal doping concentration, providing a basis for membrane performance optimization. • The membrane exhibits outstanding performance: sensors based on the PAN substrate membrane demonstrate a sensitivity of 13.74 V/N and a response time of 1.2 ms. At 10 Hz and 1.5 N, the output voltage reaches 78.42 V, enabling real-time sensing and aligning with the multifunctional application focus in membrane science. • The PAN-based piezoelectric membrane showed no damage or performance degradation after 5000 cycles, meeting long-term usage requirements and highlighting the reliability of functional membrane applications. Accurate capture of table tennis stroke data provides crucial support for personalized training and skill enhancement. However, existing visual monitoring systems struggle to simultaneously detect stroke force and impact location due to interference from ambient lighting and shooting angles, creating a core bottleneck in intelligent table tennis training. To this end, this study innovatively proposes an integrated flexible piezoelectric sensor solution. Utilizing polyacrylonitrile (PAN) as the substrate, a PAN/MXene/PDA@BaTiO₃ piezoelectric composite film was prepared via electrospinning technology. An integrated design was adopted, where an 8-channel piezoelectric sensor array was constructed on the front side of the racket, and a signal acquisition and wireless transmission module were integrated on the back side, enabling real-time and accurate capture and transmission of hitting signals. Experimental results indicate that the composite membrane exhibits optimal piezoelectric performance at a PDA@BaTiO₃ doping concentration of 130 mg, achieving a sensitivity of 13.74 V/N with a response time of only 1.2 ms. It maintains excellent mechanical stability even after 5000 cycles of load testing. The integrated racket demonstrated outstanding dynamic sensing capabilities in both ball-bouncing and rally tests. This research not only provides a novel technical approach for table tennis training but also lays a technological foundation for flexible sensing technology in the field of smart sports. Download: Download high-res image (128KB) Download: Download full-size image
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DOI
高影响因子
危险品化学品经营许可证（带存储）