Polymers
·
2022
·Vol. 14
·期 23
·5295
·
IF 4.967
Ling Zhang,Junlu Sheng,Yongbo Yao,Zhiyong Yan,Yunyun Zhai,Zhongfeng Tang,Haidong Li
Waterproof breathable functional membranes have broad application prospects in the field of outdoors textiles. The fluorine-containing microporous membranes of the mainstream functional products easily cause harm to the environment, and thus, the fluorine-free environmental nanofibrous membranes are an important development direction for functional membranes. In this subject, the electrospun polyacrylonitrile nanofibrous membranes were first hydrophobically modified by amino functional modified polysiloxane (AMP), followed by in situ cross-linking modified with 4, 4’-methyl diphenylene diisocyanate (MDI). The fluorine-free modification by AMP altered the surface of the membranes from hydrophilic to hydrophobic, and greatly improved the waterproof properties with the hydrostatic pressure reaching to 87.6 kPa. In addition, the formation of bonding points and the in situ preparation of polyuria through the reaction between the isocyanate in MDI and the amino group in AMP, could improve the mechanical properties effectively. When using AMP with the concentration of 1 wt% and MDI with the concentration of 2 wt%, the relatively good comprehensive performance was obtained with good water resistance (93.8 kPa), modest vapor permeability (4.7 kg m−2d−1) and air permeability (12.7 mm/s). Based on these testing data, the modified nanofibrous membranes had excellent waterproof and breathable properties, which has future potential in outdoor sports apparel.Keywords:electrospun polyacrylonitrile membranes;fluorine-free hydrophobic modification;amino functional modified polysiloxane;in situ cross-linking reaction;waterproof breathable
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
Foods
·
2022
·Vol. 11
·期 13
·1843
·
IF 5.561
Lanlan Wei,Yanan Chen,Dongliang Shao,Jingjun Li
In this study, a packed-fiber solid-phase extraction (PFSPE)-based method was developed to simultaneously detect nine quinolones, including enrofloxacin (ENR), ciprofloxacin (CIP), ofloxacin (OFL), pefloxacin (PEF), lomefloxacin (LOM), norfloxacin (NOR), sarafloxacin (SAR), danofloxacin (DAN), and difloxacin (DIF), in pure milk, using high-performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS). Polystyrene (PS) and polyacrylonitrile (PAN) were combined to form PS-PAN composite nanofibers through electrospinning. The nanofibers were used to prepare the home-made extraction columns, and the process was optimized and validated using blank pure milk. The analytical method showed high accuracy, and the recoveries were 88.68–97.63%. Intra-day and inter-day relative standard deviations were in the ranges of 1.11–6.77% and 2.26–7.17%, respectively. In addition, the developed method showed good linearity (R2≥ 0.995) and low method quantification limits for the nine quinolones (between 1.0–100 ng/mL) for all samples studied. The nine quinolones in the complex matrix were directly extracted using 4.0 mg of PS-PAN composite nanofibers as a sorbent and completely eluted in 100 μL elution solvent. Therefore, the developed PFSPE-HPLC-MS/MS is a sensitive and cost-effective technique that can effectively detect and control nine quinolones in dairy products.Keywords:polystyrene-polyacrylonitrile nanofibers;quinolones;packed-fiber solid-phase extraction;HPLC-MS/MS;pure liquid milk
研究领域:
分析化学
·
食品科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2020
·Vol. 82
·期 10
·2098-2113
·
IF 1.638
He Jiaojie,Yang Yue,Xu Yuhong,Wang Zichuan,Xu Bing,Huang Yuheng,Yang Liwei
In this study, an excellent phosphate adsorbent was prepared for removing phosphate to an extremely low concentration. The La(OH) 3 nano-rods stabilizing in polyacrylonitrile (PAN) nanofibers (PLNFs) were prepared by electrospinning and a subsequent in situ precipitation. PAN nanofibers were employed as the matrix of the composite nanofibers, where the well-dispersed La(OH) 3 nano-rods were encapsulated as the active species for highly efficient phosphate capture owing to the strong binding between phosphate and lanthanum. On account of the nano-structure, the maximum phosphate adsorption capacity was 151.98 mg P/g (La), much higher than the result of La(OH) 3 nano-crystal, produced by precipitation without PAN or any organic surfactants. Moreover, the PLNFs could remove phosphate (2 mg P/L) to an extremely low concentration within 20 min, which could lead to a nutrient deficient condition to protect water quality and ecosystem. The optimization of PLNFs design was implemented through parameter adjustment of electrospinning. Lanthanum salt content, humidity, concentration of solution and applied voltage were chosen to analyze the influences on the composition, diameter and morphology of the nanofibers, giving the result that the most effective adsorbent was the PLNFs with spider-web-like nano-structures. The La(OH) 3 nano-rods stabilizing in polyacrylonitrile nanofibers (PLNFs) were prepared by electrospinning and a subsequent in situ precipitation. The maximum phosphate adsorption capacity by PLNFs was 151.98 mg P/g (La). The PLNFs could remove phosphate (2 mg P/L) to an extremely low concentration within 20 min. The PLNFs with spider-web-like nano-structures showed the highest phosphate removal.
研究领域:
环境科学
·
纳米技术
·
材料科学
·
水处理
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Meimei Zhou,Wei Zou,Xuemei Zhu,Huachen Ma,Pengbo Wang,Jiaxin Shang,Pingping Luo
UIO-66-NH 2 was successfully deposited on electrospun polyacrylonitrile (PAN) nanofibers treated by thermal oxidative stabilization (TOS) via a simple and effective in situ growth method. Owing to the formation of acridone rings, naphthyridinering rings and hydronaphthyridine rings during the TOS process, the thermally stabilized electrospun PAN (TSPAN) nanofibers were greatly improved in stability and heat resistance and could provide adequate nucleation points for MOFs growth, indicating an ideal MOFs deposition support without additional surface modifications. The results demonstrated that UIO-66-NH 2 crystals distributed relatively uniform and dense on the TSPAN nanofibers with mass loading up to 28.1 wt%. Compared with powdered UIO-66-NH 2 , the formed UIO-66-NH 2 @TSPAN nanofibers showed enhanced visible light driven photocatalytic activity towards reduction of Cr(VI) due to the improvement of visible light response, more excellent photothermal conversion ability and the increase of exposed active sites. The photocatalytic reduction rate of Cr(VI) over UIO-66-NH 2 @TSPAN was up to 93% within 180 min and the rate constant (k = 0.1362) was 2.3 times that of powdered UIO-66-NH 2 (k = 0.00576). Significantly, the mechanical flexibility and structural stability endowed the nanofibrous photocatalyst easy operation and outstanding reusable capability. The photocatalytic activity for Cr(VI) reduction still preserved 90% after five cycles. This work proposes a facile strategy for preparation of free-standing MOFs nanofibers and provides MOFs-based photocatalysts a new opportunitie for broad applications in water treatment.
研究领域:
材料科学
·
环境催化
·
纳米材料
·
光化学
·
水处理技术
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 13
·4067-4077
·
IF 4.174
Mingyue Zhu,Chuanxiang Qin,Jian-jun Wang,Jun Sun,Lixing Dai
A new photocatalytic composite material, based on flexible functional polyacrylonitrile nanofibers (denoted as f-PAN NF), was developed by depositing composite layers of α-TiO2 and cone-shaped titanate (H2Ti5O11·3H2O) successively. The α-TiO2 coated on f-PAN NF as a seed accelerated the nucleation of titanate. Cone-shaped titanate deposited on α-TiO2@f-PAN NF tightly at 35 °C with the assistance of cyanuric acid via Ostwald ripening. Due to the uniform distribution of cone-shaped titanate, the photocatalytic performance of hybrid f-PAN NF was remarkable under LED light irradiation and yielded additional photocatalytic applications as well. In addition, the composite photocatalyst exhibited better reusability and retrievability because of the special design involving a bonding between the nanofibers and layers.
研究领域:
材料科学
·
纳米技术
·
环境工程
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Zhengyu Ding,Zhihao Zhang,Binjie Xin,Xue Yang
This study develops flexible PAN-Eu/PVP/TPPO(PAN-EPT) fluorescent nanofiber membranes through a dual-ligand electrospinning strategy (PVP/TPPO), addressing long-standing challenges in rare-earth polymer systems: self-aggregation of rare-earth complexes (leading to luminescence quenching) and poor compatibility between complexes and polymer matrices. The optimized membranes exhibit UV-activated red emission at 618 nm with 45% higher color purity than conventional Eu 3+ complexes, enabled by suppressed aggregation (XPS-confirmed Eu-O coordination) and enhanced energy transfer. Simultaneous mechanical robustness (12 MPa strength, 32% elongation) stems from PAN-EPT hydrogen bonding (FTIR-verified). Demonstrating meter-scale production capability (>90% yield) and humidity-resistant fluorescence, these membranes enable three advanced applications:Tamper-evident security tags with ISO-certified chromatic stability, Wearable UV sensors (3-s response time), Flexible optical waveguides. This strategy establishes a universal framework for manufacturing mechanically durable luminescent materials.
研究领域:
材料科学
·
高分子化学
·
纳米技术
·
光电子学
·
柔性电子
·
防伪技术
·
稀土功能材料
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Hui Li,Lei Zhu,Jianqiang Zhang,Tianchao Guo,Xiao Li,Wei Xing,Qingzhong Xue
A nanofibrous polyacrylonitrile membrane decorated with metal-organic frameworks (MOFs) of UiO-66-NH 2 is prepared via a simple and flexible self-assemble method. It is found that the membrane shows high-efficiency separation performance of oil-water emulsions, due to the hydrophilic carboxyl and amino groups of UiO-66-NH 2 and the gaps between neighboring UiO-66-NH 2 . Remarkably, solely driven by gravity (∼0.01 bar), the obtained membrane can effectively separate oil-water emulsions with an excellent separation efficiency (>99%, TOC < 10 mg/L) and a high flux (2107 Lm −2 h −1 ). It is demonstrated that the hydrophilic carboxyl and amino groups of UiO-66-NH 2 enhance the superhydrophilicity and underwater superoleophobicity of the membrane so as to greatly improve the antifouling properties of the membrane. Besides, because the size of gaps between neighboring UiO-66-NH 2 is mostly much smaller than that of oil drops and the UiO-66-NH 2 are underwater oleophobic, the oil drops hardly enter the gaps between neighboring UiO-66-NH 2 so that the gaps provide much more water flow tunnels, which obviously enhance the flux of the membrane. In this study, we present a new avenue of building MOFs loaded nanofibrous membrane with excellent oil-water separation performance.
研究领域:
材料科学
·
环境工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Xuerui Wan,Hairong Dai,Huayin Zhang,Huan Yang,Feng Li,Qian Xu
Emerald-based polyaniline-modified polyacrylonitrile nanofiber mats (emerald-based PANI-PAN NFMs) were prepared and their performance as solid-phase extraction (SPE) adsorbent for extracting four Sudan dyes (Sudan I–IV) from poultry feed was evaluated. After solvent extraction, the poultry feed samples extraction solution was directly used for SPE by diluted with ultra-high purity water without any other treatment. No washing step was needed before elution, and the eluent was directly detected by the high-performance liquid chromatography-diode array detector (HPLC-DAD) without conventional concentration and filtration. The results showed that emerald-based PANI-PAN NFMs could effectively adsorb Sudan dyes through π-π conjugation and hydrogen bond . The amount of adsorbent and eluent required for the entire SPE process was only 10 mg and 600 µL, respectively. Furthermore, the emerald-based PANI-PAN NFMs were easy to regenerate, and no performance degradation was found after at least 6 times reuses. The detection limits of Sudan I–IV were 6–15 μg·kg −1 and the recoveries were 88.48 % –101.88 % with relative standard deviations (RSDs) less than 15 %, indicating the method has good sensitivity, accuracy, and precision. Compared with existing methods, the proposed method has simpler processes with practical application potential.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yanling Zheng,Huijun Sun,Yanjun Cheng,Wenhu Gao,Chenyu Wang,Jun Ju,Min Li,Xuemei Xiang,Wei Sun,Wei Wang,Zhisong Lu,Yan Qiao
The one-dimensional yarn-based sweat-activated battery (y-SAB) has been considered a promising power source for textile electronics due to its high flexibility, stable output, and compatibility with conventional weaving/knitting techniques. However, its practical applications are hampered by its relatively low energy capacity, especially at higher current densities, and the loose binding of the fiber-based separating layer. Here, a core-sheath y-SAB fabricated using an electrospun polyacrylonitrile (PAN) nanofiber separator was developed through a conjugated electrospinning technique. This innovative y-SAB design not only achieves a reduced diameter with the tight covering of PAN nanofiber film but also demonstrates almost doubled capacity (28.5 mAh) compared to its counterpart with a cotton yarn separator (15.8 mAh) in artificial sweat. It also delivers higher capacity in harsh electrolytes like 1 M NaCl and 1 M KOH. The remarkable improvement can be attributed to the tight and dense wrapping of the PAN nanofibers around the zinc electrode, which inhibits localized corrosion of the zinc wire and prevents the contamination of the cathode surface by corrosion products such as zinc oxide and simónkolleite. The proposed y-SAB could tolerate 13,000 cycles of bending and 3200 cycles of twisting without significantly reducing its performance, allowing it to be woven into textiles for powering wearable electronic devices. This study introduces an innovative approach for fabricating high-efficacy yarn batteries designed for integration with machine weaving technologies and also provides some insights into the inhibition of localized zinc corrosion in SABs.
研究领域:
材料科学
·
纺织工程
·
电化学
·
可穿戴技术
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Hui Zhi,Xiaobo Zhang,Chunsheng Li,Zhenming Wang,Fengya Wang,Mingzhen Zhu,Peng Wan,Liang Feng
Wearable pressure sensors with highly sensitive and wide detection ranges are essential for human motion monitoring. In this work, a self-assembled hybrid aerogel was obtained by polyacrylonitrile nanofibers, polyaniline, and reduced graphene oxide. Based on the complementation of 1D and 2D nanomaterials, the aerogel acted like a spring under lower pressure and a membrane under higher pressure, showing great potential in human motion monitoring. According to the wide detection range of the aerogel, an artificial hand was designed to recognize different spatial pressures such as grasping a pen, holding a bottle, and shaking hands. These signal outputs could be precisely reflected by voltage change and further converted to RGB values. Meanwhile, a shoe pad was prepared to monitor foot pressure and the resistance change could be converted to color scale signals. This work provides a new strategy for 1D/2D hybrid nanomaterials-based aerogel with wide pressure ranges in flexible electronics.
研究领域:
材料科学
·
纳米技术
·
可穿戴技术
·
传感器
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Jiankun Cao,Sihui Liang,Hao Zhang,Qian Xu,Wenliang Ji
In this work, sodium 4-styrenesulfonate functionalized polyacrylonitrile nanofibers mat (SS/PAN NFM) was firstly prepared and applied as 96-well plate solid–phase extraction adsorbent for quantitative determination of seven β-agonists residues in pork samples. The functional modification endowed the SS/PAN NFM with superior adsorption performance for target β-agonists. The adsorption process is spontaneous (Δ G < 0), the initial adsorption rate can reach 6.03–9.09 mg/g/min and the maximum adsorption capacity is calculated to be 48.3 mg/g at 298 K. Moreover, SS/PAN NFM can be reused for 12 times without degradation in adsorption capability. Combined with UPLC–MS/MS, the limits of detection can reach 0.006–0.24 μg/kg, the recoveries ranged from 87.2% to 111% and the relative standard deviations of intra-day and inter-day precisions were in the scope of 1.75%–11.6% and 5.08%–13.5%, respectively. The obtained results fully demonstrated the practicability of this method in preventing the hazard of β-agonists residues.
研究领域:
分析化学
·
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Xiaolong Dong,Xin Zhao,Lifan Shen,Maosen Hu,Edwin Yue Bun Pun,Hai Lin
The construction of perovskite-based luminescent systems for multifunctional integrated platforms via reciprocal energy transfer (ET) cascades emerges as a central focus, but the material design and photophysical control remain a significant challenge. Herein, a strong power-dependent quantum yield behavior is observed in Cs 2 NaInCl 6 : Ho 3+ -Yb 3+ (CNIC: Ho-Yb) phosphors with ultra-low phonon energy, and quantified multiphoton upconversion (UC) efficiencies exhibit ultra-linear enhancement with the increasing excitation power, ensuring practical applicability for UC-based temperature sensing. Moreover, an efficient quantum cutting process is unveiled in the CNIC: Ho-Yb, where a single high-energy photon of Ho 3+ is converted into multiple NIR emissions of Yb 3+ via energy redistribution under 453 nm laser excitation, offering significant potential for enhancing near-infrared (NIR) imaging capability in biological tissues. To address the inherent structural and functional limitations of powder-based materials, the CNIC: Ho-Yb/polyacrylonitrile (CNIC: Ho-Yb/PAN) nanofibers are synthesized by electrospinning, and the functional integration platform based on the efficient bidirectional ET is built by coupling 453 and 980 nm lasers to enable selective applications in flexible thermal monitoring and NIR bioimaging. These findings enable next-generation flexible thermometry platforms with higher sensitivity, signal fidelity, and device-level applicability, while also paving the way for non-invasive and high-contrast deep-tissue imaging in biomedical diagnostics.
研究领域:
材料科学
·
光学物理
·
纳米技术
·
生物医学工程
·
发光
·
能量传递
·
传感器
·
生物成像
✓ 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）