RSC Advances
·
2019
·Vol. 9
·期 29
·16754-16766
·
IF 3.049
Jinhao Xu,Binjie Xin,Zhuoming Chen,Yan Liu,Yuansheng Zheng,Fuli Zhang
Directional water transport in garment materials plays a pivotal role in maintaining human thermal and wet comfort. In the present work, a new type of multilayer fibrous mat with the specific function of directional water transport was prepared via the combination of melt-electrospinning and solution-electrospinning. The polypropylene (PP) fibrous layer prepared by melt-electrospinning technology was located in the inner layer (next to the skin), while the polyacrylonitrile-containing hydrophilic nano-silica particles (PAN-SiO2) layer with remarkable hydrophilicity was located in the outer layer, which could effectively transport water to the outer surface of the composites. Treatment of the as-prepared PAN-SiO2/PP with an alkaline aqueous solution of dopamine not only increased the wettability of the PP layer, but also further improved the hydrophilicity of PAN-SiO2. A layer of cotton woven mesh was added between the TPP layer and TPAN-SiO2 to form a sandwich structure in order to accelerate water transport in the bilayered fibrous mats. The directional water transport, mechanical flexibility, and permeability of the prepared multilayered superfine fibrous mat were characterized systematically. The experimental results exhibited that TPAN-SiO2/cotton mesh/TPP exhibited an excellent accumulative one-way transport index (AOTI, 1071%), remarkable overall moisture management capacity (OMMC, 0.88), and reasonably high water vapor transport rate (WVT, 11.6 kg d−1 m−2), indicating it is a promising candidate for the development of novel textile materials for use in the field of sportswear for fast sweat release applications.
研究领域:
纺织材料科学
·
生物医学工程
·
功能材料
·
高分子材料
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表面改性
·
湿传递性能
·
柔性电子器件基材
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Xiangqian Li,Jiapei Gu,Zhan Zhou,Lufang Ma,Yiping Tang,Jinwei Gao,Qianming Wang
The generation of novel optical sensing structures through the lanthanide coordination has been a key scientific endeavor. The design of molecular indicator for chemical response is derived from the assembly of a polymeric-based ternary europium (III) complex system (Eu(NTA) 3 L/PVA (NTA = 4,4,4-trifluoro-1-(naphthalen-2-yl)butane-1,3-dione, L = 2-(4-(4-(allyloxy)phenyl)-6-(pyridin-2-yl)pyridin-2-yl)pyridine, PVA = poly(vinyl acetate)). The electrospinning technique has been employed to create a nanometer scale membrane and this functional film with ultrafine fibers (diameter of about 110 nm) exhibits intense red light at 618 nm under ultra-violet excitation of 340 nm. The luminescent signal transduction involves the interaction of hydrogen chloride (HCl) with the organic ligand. The strong acidity of the analyte induces dissociation of complex network and the evolution of emission from red to blue has been observed. The fabricated nanosensor demonstrates rapid response time (<2 s) and the detection limit has been calculated to be 3.0 ppm. This effective strategy for achieving lanthanide complex-encapsulated polymer fibers will contribute to the development of new intelligent photonic devices.
研究领域:
材料化学
·
分析化学
·
纳米科技
·
光子学
·
功能材料
✓ 已验证
DOI
高影响因子
Advanced Electronic Materials
·
2021
·Vol. 8
·期 4
·2100997
·
IF 7.295
Junyu He,Peilong Xu,Ruifu Zhou,Hao Li,Hongliang Zu,Jun Zhang,Yuanbin Qin,Xuhai Liu,Fengyun Wang
Ultraviolet (UV) photodetectors play an important role in numerous commercial and scientific applications. The UV photodetectors based on binary-cation indium zinc oxide (InZnO) thin films exhibit great performance enhancement, compared with their single-cation counterparts. However, UV photodetectors based on 1D InZnO nanowires could potentially exhibit more superior optoelectrical performance, due to the large surface-to-volume ratio and favorable carrier transport characteristics of nanowires. This work has combined combustion synthesis with electrospinning technique to efficiently fabricate InZnO nanowire-based UV photodetectors. At the annealing temperature of 375 °C, the newly designed InZnO nanowire photodetectors exhibit excellent photoelectric performance under the irradiation of 310 nm UV light, including a photo-to-dark current ratio of 1.2 × 10 4 , a photo responsivity of 2.8 × 10 3 A W –1 , and a high detectivity of 2.4 × 10 16 Jones. This study not only demonstrates the opportunity to construct new-generation transparent electronics based on 1D metal oxide nanowires but also sheds new light on how to further decrease the annealing temperature of metal oxide nanowire devices for low-temperature fabrication processes.
研究领域:
材料科学
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纳米科技
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光电子学
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半导体器件
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功能材料
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2019
·
IF 5.256
Xiaoxiao Wei,Yuzhi Wang,Jing Chen,Panli Xu,Wei Xu,Rui Ni,Jiaojiao Meng,Yigang Zhou
Novel polymeric deep eutectic solvents (PDES) based on 3-acrylamidopropyl trimethylammonium chloride/D-sorbitol functionalized amino-magnetic (Fe 3 O 4 NH 2 ) metal-organic framework (HKUST-1-MOF) composites (Fe 3 O 4 NH 2 @HKUST-1@PDES) were synthesized and characterized by field emission transmission electron microscope (FE-SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), fourier transform infrared spectrometry (FT-IR), thermal gravimetric analysis (TGA), vibrating sample magnetometer (VSM) and zeta potentials . Then the composites were firstly utilized to selectively separate malachite green (MG) and crystal violet (CV) coupled with magnetic solid-phase extraction (MSPE). A response surface methodology (RSM) based on Latin hypercube sampling (LHS) was selected to analytically optimize the extraction parameters including initial concentration of dyes, extraction time, pH value and extraction temperature. The maximum extraction amount and optimal extraction conditions predicted by the RSM model matched well with the actual experimental results, and the extraction amount was 966.93 mg g −1 for MG and 788.90 mg g −1 for CV,respectively. The results indicated that the model possessed higher calculation accuracy through analyzing fewer sample points, thereby achieving theoretical prediction of extraction amount and conditions and being a prefect supplementary to actual experiments. The electrostatic interaction between the composites and cationic dyes played the main roll in the extraction process. The proposed extraction method exhibited lower limit of detection (98.19 ng mL −1 for MG and 23.97 ng mL −1 for CV) and preeminent precision (RSD ˂ 0.4%). Spiked recoveries of fish samples at three spiking levers ranged from 89.43% to 100.65% for MG and 95.29%–98.03% for CV. All results highlighted the excellent potential of Fe 3 O 4 NH 2 @HKUST-1@PDES-MSPE strategy in selective separation of cationic dyes in complex medium.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2015
·Vol. 36
·期 15
·1437-1443
·
IF 4.941
Linge Wang,Paul D. Topham,Oleksandr O. Mykhaylyk,Hao Yu,Anthony J. Ryan,J. Patrick A. Fairclough,Wim Bras
Polymer beads have attracted considerable interest for use in catalysis, drug delivery, and photonics due to their particular shape and surface morphology. Electrospinning, typically used for producing nanofibers, can also be used to fabricate polymer beads if the solution has a sufficiently low concentration. In this work, a novel approach for producing more uniform, intact beads is presented by electrospinning self-assembled block copolymer (BCP) solutions. This approach allows a relatively high polymer concentration to be used, yet with a low degree of entanglement between polymer chains due to microphase separation of the BCP in a selective solvent system. Herein, to demonstrate the technology, a well-studied polystyrene-poly(ethylene butylene)–polystyrene triblock copolymer is dissolved in a co-solvent system. The effect of solvent composition on the characteristics of the fibers and beads is intensively studied, and the mechanism of this fiber-to-bead is found to be dependent on microphase separation of the BCP.
研究领域:
高分子科学
·
纳米材料
·
生物医学工程
·
药物递送
·
组织工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Rui Xuan,Jinhui Li,Dongxu Huang,Tao Wang,Bo Zhang,Fangfang Niu,Guoping Zhang,Rong Sun,Ching-Ping Wong
With the continuous development of flexible electronic devices, the corresponding demands for electrochemical storage devices with flexibility and self-healing properties have been raised. However, the current supercapacitors still have great limitations in mechanical and self-healing performance. Herein, flexible and self-healing poly (2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA)/polyvinylimidazole (PVI)/LiCl polyelectrolyte is easily fabricated by a one-step copolymerization . The combined effect of electrostatic interaction and hydrogen bonding significantly enhances the mechanical and self-repairing ability of polyelectrolytes, showing excellent stretchability of 1137%, fracture stress of 154.57 kPa, and high healing efficiency of 91% at room temperature for 24 h. Besides, flexible electrode is prepared by adsorbing poly 3,4-ethylenedioxythiophene/polystyrene sulfonate on a polyurethane sponge. After assembly with a polyelectrolyte, the as-prepared supercapacitor proves excellent electrochemical performance. The area capacitance is 106 mF cm −2 at 50 mV s −1 and excellent cycle stability (97% capacity retention rate after 2000 cycles). In addition, the completely cut off supercapacitor can be successfully restored to 90% of the original capacitance, and still maintain a capacitance retention rate of up to 98% after 1000 cycles. This work provides a possible solution for designing low-cost intelligent and durable electrochemical storage device for smart clothing or electronic skin.
研究领域:
材料科学
·
高分子化学
·
电化学
·
柔性电子学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2017
·
IF 3.671
Ping Shao,Ben Niu,Hangjun Chen,Peilong Sun
Edible packaging films using polymer for food preservation have been developed for a long time. In this study, the effects of different concentrations (0.5%, 1%, 1.5%, w/v) of tea polyphenols incorporated into pullulan-Carboxymethylcellulose sodium (Pul-CMC) solutions on electrospun nanofiber films were evaluated. The fiber size distribution was characterized by scanning electron microscopy. The morphological features of nanofibers were modulated through adjusting process parameters (e.g. concentration of polymer solution, applied voltage and feeding rate). Increasing the applied voltage from 19 to 21 kV and the feed rate from 0.36 to 0.6 mL/h leads to a reduction in mean fiber diameter. Fruit packaging potential was evaluated using strawberry. The pullulan-CMC-TP nanofibers significantly decreased weight loss and maintained the firmness of the strawberries, and improved the quality of the fruit during storage. The findings demonstrate a facile packaging route to improve food sustainability and reduce waste.
研究领域:
食品科学
·
材料科学
·
高分子化学
·
农产品贮藏与加工
·
功能食品
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 136
·期 36
·47922
·
IF 2.188
Nan Pan,Juanrong Qin,Yuwei Fan,Zeke Li,Botao Song
In this study, mesoporous silica nanoparticles (MSNs) were embedded into the hydrophilic poly(vinyl alcohol) (PVA) nanofibrous mats to achieve sustained release of water soluble drug from hydrophilic nanofibrous mats. MSNs were successfully prepared based on a sol–gel method. Water soluble drug naproxen sodium was then loaded into the mesopores of the MSNs, and different amounts of the drug-loaded MSNs were further incorporated into the fibers by the electrospinning process. Morphology of the nanofibrous mats was investigated, and it was found that all the fibers exhibited fibrous structure. Interestingly, lots of protrusions could be observed from the scanning electron microscopy images with high magnification, and numbers of the protrusions increased with the increasing of loading ratios of the MSNs from 5 to 15%. In addition, the wetting behaviors of the nanofibrous mats were also measured, and the water contact angles of all the mats were measured to be 0°. Finally, the drug release results indicated that all the PVA/MSNs composite nanofibrous mats showed an obviously prolonged drug release. The optimal loading ratio of the MSNs in the nanofibers was 10% due to the slowest drug release rate. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47922.
研究领域:
药剂学
·
生物材料
·
纳米医学
·
药物递送系统
·
高分子科学
✓ 已验证
DOI
高影响因子
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2020
·Vol. 217
·期 6
·1900536
·
IF 1.759
Parisa Zeaiean Firouzabadi,Hajar Ghanbari,Nafiseh Mahmoudi,Seyed Mohammad Amin Haramshahi,Jafar Javadpour
Polymer-based composites are used for wound healing applications. This work aims to prepare an inorganic-polymer nanocomposite based on bentonite, poly(vinyl alcohol), and bacterial cellulose by electrospinning for wound healing. The nanocomposite is synthesized using a solution intercalation technique, with 1–2 wt% nanobentonite concentration variation. The effects of commercial and laboratory-synthesized nanobentonite as well as the extract of the green walnut shell (EGWS) are examined and characterized by different techniques. The addition of nanobentonite increases the average size of fibers and tensile strength up to 200 nm and more than 15 MPa, respectively, due to the presence of hydrogen bonding formed between the nanobentonite sheets and polymer matrix. By the addition of synthetic nanoclay and EGWS, moderate elongation and strength are achieved. The hydrophilicity shows a decreasing trend up to 2 wt% of commercial nanobentonite; however, the laboratory-synthesized nanobentonite is not significantly effective. Effects of extracts on the viability of cultured human adipose tissue–derived mesenchymal stem cells (ADSCs) are quantitated, where the samples containing 1–2 wt% of commercial nanobentonite have less toxicity than others. Antibacterial activity is tested against both Escherichia coli and Staphylococcus aureus bacteria according to the agar diffusion test for 72 h, in which EGWS-based mats exhibit strong antimicrobial activity.
研究领域:
生物材料学
·
组织工程
·
纳米医学
·
再生医学
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药剂学
·
微生物学
·
高分子科学
✓ 已验证
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2011
·Vol. 32
·期 21
·1729-1734
·
IF 4.371
Juanping Hu,Xianfeng Wang,Bin Ding,Jinyou Lin,Jianyong Yu,Gang Sun
Electro-spinning/netting (ESN) as a cutting-edge technique evokes much interest because of its ability in the one-step preparation of versatile nano-fiber/net (NFN) membranes. Here, a controllable fabrication of polyurethane (PU) NFN membranes with attractive structures, consisting of common electrospun nanofibers and two-dimensional (2D) soap bubble-like structured nano-nets via an ESN process is reported. The unique nanoscaled NFN architecture can be finely controlled by regulating the solution properties and several ESN process parameters. The versatile PU nano-nets comprising interlinked nanowires with ultrathin diameters (5–40 nm) mean that the NFN structured membranes possess several excellent characteristics, such as an extremely large specific surface area, high porosity and large stacking density, which would be particularly useful for applications in ultrafiltration, special protective clothing, ultrasensitive sensors, catalyst support and so on.
研究领域:
材料科学
·
高分子化学
·
纳米技术
·
膜科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2023
·Vol. 129
·期 10
·682
·
IF 2.7
Yin Chunmei,Li Qinghua,Lu Zhiyi,Shi Yaochen,Lin Wei
A highly sensitive pressure-sensitive sensor based on MXene was developed using the electrostatic self-assembly method, with carbide sponges as the elastic substrate and a rational design. Specifically, CTAB was used to treat the carbide triamine sponge and conduct the electrostatic self-assembly with MXene to achieve a tightly combined conductive filler and substrate. The resulting pressure sensor showed excellent performance, with a high sensitivity of 15.05 kPa −1 under a range of 0–20 kPa, a response time of 0.1 s, and high durability under 2000 loading–unloading cycles. The minimum detection limit of the sensor was as low as 0.3 Pa, demonstrating excellent monitoring performance. Additionally, finite-element simulation analysis showed that MXene@CTAB@CMF had even better sensing performance at the same stress level. Moreover, the pressure sensor exhibited good sensing performance for various physiological signals and daily work monitoring of the human body, indicating its potential application value.
研究领域:
生物医学工程
·
纳米医学
·
柔性电子学
·
传感技术
·
材料科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2021
·
IF 3.407
Wenbo Jiang,Kongsen Hu,Nan Lv,Zhiwei Lyu
Existing piezoelectric sensing materials usually rely on top and bottom planar electrodes to achieve the assembly of piezoelectric sensors , restricting their application due to the limitation of flexibility and miniaturization as well as time-consuming and costly multi-steps preparation. Here, we report a simple strategy to synchronously construct piezoelectric elements and nanoresistance networks via fabricating single PAN/PANI/PVP piezoelectric-conductive nanofibers (NFs) by electrospinning. By virtue of PAN as piezoelectric elements and PANI/PVP as nanoresistance networks, the flexible PAN/PANI/PVP piezoelectric-conductive NFs as an integrated sensing system can timely collect and output voltage based on Wheatstone bridge principle. The pressure sensing potential of flexible PAN/PANI/PVP integrated nanofibers membrane (INFM) is systematically explored and evaluated. The valid contact and adhesion of piezoelectric elements and nanoresistance networks improve effective polarization and collection of induced charges, enhancing piezoelectric output performance. Moreover, it enables the INFM to perceive tiny force with high-precision sensitivity (667 mV N −1 ) down to approximately 0.05 N while retaining a linear relationship. Thus, our research opens a simple route to design integrated sensing materials with nanoscale , high-sensitivity, lightweight and low-cost, making them attractive candidates in the potential application in micro-/nanoscale sensors and wearable electronics .
研究领域:
生物医学工程
·
纳米医学
·
柔性电子学
·
传感器技术
·
可穿戴设备
·
功能材料
·
微纳系统
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）