Polymers
·
2022
·Vol. 14
·期 20
·4387
·
IF 4.967
Shiqian Hu,Zida Zheng,Ye Tian,Huihong Zhang,Mao Wang,Zhongwei Yu,Xiaowei Zhang
The growing issue of particulate matter (PM) air pollution has given rise to extensive research into the development of high-performance air filters recently. As the core of air filters, various types of electrospun nanofiber membranes have been fabricated and developed. With the novel poly(acrylonitrile) (PAN)-CuCl2composite nanofiber membranes as the filter membranes, we demonstrate the high PM removal efficiency exceeding 99% and can last a long service time. The nanoscale morphological characteristics of nanofiber membranes were investigated by scanning electron microscopy, transmission electron microscopy, and mercury intrusion porosimeter. It is found that they appear to have a special net structure at specific CuCl2concentrations, which substantially improves PM removal efficiency. We anticipate the PAN-CuCl2composite nanofiber membranes will be expected to effectively solve some pressing problems in air filtration.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2017
·Vol. 29
·期 1
·442-450
·
IF 1.907
Suchen Jiang,Huanchao Liu,Xue Zhang,Yajun Ren,Xinxiang Cui,Xiaofeng Song
Electrospun biodegradable fiber mesh is a promising alternative scaffold for delivering progenitor cells for repairing damaged or diseased tissue, but its cripple mechanical stability has not met the requirement of tissue engineering yet. In this work, the well-defined poly(ε-caprolactone)-branched poly(methyl methacrylate- co -hydroxyethylmethacrylate) (PCL-PMH) has been successfully synthesized to toughen electrospun poly( l -lactide) (PLLA) fiber membrane. Characterization of the obtained nanofibrous meshes indicates that PCL-PMH and PLLA can be well blended to make smooth fibers, and fibrous diameter vary little with blending PCL-PMH. The aggregation state of two macromolecules is closely correlated with blend ratio, molecular structure, and molecular weight of PCL-PMH, and only when PCL-PMH and PLLA form good interfacial adhesion can PMH give full play to its potential for toughening the fiber membrane. The tensile strength and elongation at break of the blend are 6.20 MPa and 63.40% under the optimal conditions, respectively, and it also exhibits the representative feature of toughness materials. The blending fiber membrane is as no cytotoxic as original PLLA. This work will provide a new way for toughness of electrospun fiber membrane in practice.
研究领域:
生物材料学
·
组织工程学
✓ 已验证
DOI
高影响因子
Processes
·
2022
·Vol. 10
·期 5
·850
·
IF 3.352
Jiale Zhou,Hai Wang,Haiyan Wu,Dongwei Lan,Yan Peng,Zhi Li,Fangyin Dai
Indocyanine green (ICG) is a near-infrared (NIR) organic reagent for clinical bioimaging and phototherapy. It is a suitable photosensitizer for photodynamic antimicrobial chemotherapy (PACT). In this study, various ICG-loaded nanofibrous membranes were prepared. The water vapor transmission rate (WVTR) of SF/PLGA/20ICG was 3040.49 ± 157.11 g·m−2day−1, which allowed the maintenance of a humid environment above the wound. The growth inhibition rates forS. aureusandE. coliwere 91.53% and 87.95%, respectively. The nanofibrous membranes exhibited excellent antimicrobial performance. Cellular experiments showed that the nanofibrous membranes have good cytocompatibility and antitumor efficacy. SF/PLGA/20ICG showed good potential for application in wound healing and cancer therapy.Keywords:indocyanine green;nanofibrous membranes;near-infrared;controlled release
研究领域:
生物医学工程
·
材料科学与工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Zungui Shao,Guoyi Kang,Junjie Xie,Ruimin Shen,Haonan Li,Ziyue Zeng,Jiaxin Jiang,Xiang Wang,Wenwang Li,Shumin Guo,Yifang Liu,Gaofeng Zheng
Composite bio–based multifunctional air filtration is a great challenge and development trend for personal protection. This work was inspired by nature mutualism to produce bio–based and essential oil loaded nanofibrous membrane with multiple functions of high–performance, antibacterial, and mosquito–repellent. The cinnamaldehyde (CMA) and poly(hexamethylene biguanide) (PHMB) were introduced into the cellulose acetate (CA) polymer system to achieve functionalization, and then the CA/CMA/PHMB ultrafine bimodal nanofibrous membrane was prepared through one–step electrospinning. Compared to eugenol, the CMA contributed to the refinement of fiber and minimized the reduction of mechanical properties, thermal stability, and hydrophobicity. On the other hand, the PHMB enhanced jet splitting and synergistically improved antibacterial ability with CMA. The filtration efficiency for PM 0.3 , the pressure drop, and the quality factor were 99.78%, 59.5 Pa, and 0.1028 Pa −1 , respectively. The bacteriostatic rates against Escherichia coli and Staphylococcus aureus , and the mosquito–repellent rate were 99.65%, 99.99%, and 92.7%, respectively. Lastly, the batch preparation of this solution was explored, which contributed to commercialization. This work provides a novel and simple approach to efficiently fabricate multifunctional high–performance air filter, which will promote the development of bio–based and sustainable air filter.
研究领域:
材料科学
·
生物医学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 12
·3434
·
IF 5.076
Haodong Zhao,Yali He,Zhihua Wang,Yanbao Zhao,Lei Sun
Emulsified oily wastewater threatens human health seriously, and traditional technologies are unable to separate emulsion containing small sized oil droplets. Currently, oil–water emulsions are usually separated by special wettability membranes, and researchers are devoted to developing membranes with excellent antifouling performance and high permeability. Herein, a novel, simple and low-cost method has been proposed for the separation of emulsion containing surfactants. Polyacrylonitrile (PAN) nanofibers were prepared via electrospinning and then coated by polydopamine (PDA) by using self-polymerization reactions in aqueous solutions. The morphology, structure and oil-in-water emulsion separation properties of the as-prepared PDA@PAN nanofibrous membrane were tested. The results show that PDA@PAN nanofibrous membrane has superhydrophilicity and almost no adhesion to crude oil in water, which exhibits excellent oil–water separation ability. The permeability and separation efficiency of n-hexane/water emulsion are up to 1570 Lm−2h−1bar−1and 96.1%, respectively. Furthermore, after 10 cycles of separation, the permeability and separation efficiency values do not decrease significantly, indicating its good recycling performance. This research develops a new method for preparing oil–water separation membrane, which can be used for efficient oil-in-water emulsion separation.Keywords:polyacrylonitrile;electrospinning;nanofibrous membrane;emulsion separation
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2018
·Vol. 11
·期 6
·962
·
IF 2.467
Mohammed Awad Abedalwafa,Yan Li,De Li,Xiaojun Lv,Lu Wang
Driven by economic interests, the abuse of antibiotics has become a significant concern for humans worldwide. As one of the most commonly used antibiotics, oxytetracycline (OTC) residue in animal-derived foods occurs occasionally, which has caused danger to humanity. However, there is still no simple and efficient solution to detect OTC residue. Here, an easily-operated colorimetric strategy for OTC detection was developed based on nickel ions (Ni2+) immobilized carboxymethylcellulose/polyacrylonitrile nanofibrous membranes (Ni@CMC/PAN NFMs). Owing to numerous O- and N-containing groups OTC has a strong tendency to complex with Ni2+on the strips, inducing a color change from light green to yellow visible to the naked eye. The NFMs structural features, CMC functionalization process, and Ni2+immobilization amount was carefully regulated to assure OTC detection whilst maintaining the inherent characteristics of NFMs. With the benefits of the large specific surface area (SSA) and small pore size of NFMs, the strips not only exhibited a rapid response (2 min), and low detection limit (5 nM) but also performed with good reversibility and selectivity concerning OTC detection over other antibiotics. The successful development of such enchanting nanofibrous materials may provide a new comprehension into the design and improvement of colorimetric strips.Keywords:nanofibrous membranes;nickel ions;colorimetric strips;oxytetracycline detection
研究领域:
材料科学
·
分析化学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 34
·13762-13773
·
IF 4.5
Yu Xinrong,Ma Yihang,Ma Zekun,Lian He,Meng Zhaoxu
Cuttlebone as a hemostatic traditional Chinese medicine is usually applied in powder directly to the wound for hemostasis. In order to improve the hemostatic utility of cuttlebone, gelatin/cuttlebone (Gel/Cb) membranes with different Gel/Cb ratios were fabricated through electrospinning and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The hemostatic effect and coagulation process of Gel/Cb electrospun membranes were evaluated in vitro by dynamic whole-blood coagulation test, in vitro hemolysis test, determination of clotting time, and platelet adhesion test and in vivo by liver and tail vein hemostasis models. It was noted that the addition of cuttlebone could significantly decrease the hemolysis rates of Gel/Cb electrospun membranes, which was only about one-sixth of the Gel electrospun membrane. The animal experiments demonstrated effective reduction in bleeding time and volume in Gel/Cb-treated mice. Specially, compared with the commercially available gauze group. Gel/Cb (7:3) electrospun membrane reduced the clotting time by 80.92% and the average bleeding volume by 50.83%. The results further indicated that Gel/Cb electrospun membranes could accelerate coagulation, possibly via the coagulation pathway activation to stimulate platelet contraction and rapid aggregation at the wound surface, providing a new method for rapid hemostasis of acute trauma. Graphical Abstract
研究领域:
生物医学工程
·
材料科学
·
血液学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Tingting Li,Yukun An,Jiashuang Li,Zhiming Zhang,Lin Liu,Libao An
A bimetallic Ln-MOF nanofibrous membrane (NFM) was successfully fabricated by in situ growth of Eu/Tb-MOF crystals onto electrospun polycaprolactam (PA6) nanofibers . For better combining with PA6 nanofibers , the Eu/Tb-MOFs were made into nanocrystals . Characterization with PXRD , FT-IR, EDS and XPS confirmed that the crystal structure of the Eu/Tb-MOFs maintained well on PA6 NFM. The as-prepared Eu/Tb-MOF@PA6 NFM can be used as a colorimetric fluorescent test strip for instant detection of the volume ratio of 1, 4-dioxane in 1, 4-dioxane-glycol mixture. With the increase of 1, 4-dioxane, the test strip presented color changes from green to red, which can be easily distinguished by the naked eye. In view of this, the conversion rate of the condensation reaction of glycol to 1, 4-dioxane will be preliminarily estimated without the help of equipment. More importantly, the test strip exhibited better convenience and reversibility compared with powdered Ln-MOFs because no separation process was needed for test strip before and after recovering. Benefiting from sufficient amide groups in PA6 for anchoring Eu/Tb-MOF particles, the test strip showed satisfactory stability in cycling experiments. This work will provide a new insight into the development of fluorescent test strip based on electrospun MOF NFM for quantitatively monitoring the reaction process.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF BIOMATERIALS APPLICATIONS
·
2024
·
IF 2.3
Fuhua Sun,Lishi Yang,Yi Zuo
To fabricate electroactive fibrous membranes and provide simulated bioelectric micro-environment for bone regeneration mimicking nature periosteum, a series of electroactive polyurethanes (PUAT) were synthesized using amino-capped aniline trimers (AT) and lysine derivatives as chain extenders. These PUAT were fabricated into fibrous membranes as guided bone tissue regeneration membranes (GBRMs) via electrospinning. The ultraviolet-visible (UV-vis) absorption spectroscopy and cyclic voltammetry (CV) of PUAT copolymers showed that the electroactive PUAT fibrous membranes had good electroactivity. Besides, the introduction of AT significantly improved the hydrophobicity and thermal stability of PUAT fibrous membranes and decreased the degradation rate of PUAT fibers in vitro. With the increasing content of AT incorporated into copolymers, the tensile strength and Young’s modulus of PUAT fibrous membranes increased from 4 MPa (PUAT0) to 15 MPa (PUAT10) and from 2.1 MPa (PUAT0) to 18 MPa (PUAT10), respectively. The cell morphology and proliferation of rat mesenchymal stem cells (rMSCs) on PUAT fibers indicated that the incorporation of AT enhanced the cell attachment and proliferation. Moreover, the expression levels of OCN, CD31, and VEGF secreted by rMSCs on PUAT fibers increased with the increasing content of AT. In conclusion, an electroactive polyurethane fibrous membrane mimicking natural periosteum was prepared via electrospinning and showed good potential application in guiding bone tissue regeneration.
研究领域:
生物材料学
·
组织工程
·
再生医学
✓ 已验证
DOI
PubMed
高影响因子
Biomaterials Science
·
2025
·
IF 5.7
Min Sun,Jinke Cao,Yang Zou,Haiyan Ju,Yonggang Lv
During tendon injury repair, deficiency of basic fibroblast growth factor (bFGF) is a critical factor leading to unsatisfactory repair results. This study aims to prepare bFGF-loaded zeolite imidazole framework-8 (ZIF-8) nanocrystals using one-pot synthesis method. Subsequently, a bilayer nanofibrous membrane incorporating these drug-loaded nanocrystals was fabricated through electrospinning technology. The potential of this composite nanofibrous membrane to facilitate the continuous release of bFGF at the site of tendon injury was evaluated, with the aim of enhancing the quality of tendon repair. The efficacy of the nanofibrous membrane in promoting tendon differentiation, preventing tendon adhesion, and facilitating tendon repair was assessed through both in vitro and in vivo experiments. At the site of tendon injury, the degradation of ZIF-8 in an acidic microenvironment resulted in the release of bFGF and Zn2+, which contribute to the enhancement of tendon repair. ZIF-8 nanocrystals, achieving an encapsulation efficiency of 50.13% ± 1.42%. Following a continuous release period exceeding 40 days, the cumulative in vitro release rate was determined to be 35.02% ± 4.27%. The incorporation of ZIF-8 nanocrystals into a nanofibrous membrane demonstrated the ability to effectively preserve the bioactivity of bFGF while enabling sustained sustained release at the site of tendon injury, thereby facilitating tendon repair. The findings offer novel insights into the treatment of tendon injuries and provide significant theoretical guidance for the tendon repair process.
研究领域:
生物医学工程
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Jiyuan Yu,Jian Zheng,Wei Wang,Zhijia Zhu,Chunyan Hu,Baojiang Liu
Nowadays, the global climate is constantly being destroyed and the fluctuations in ambient temperature are becoming more frequent. However, conventional single-mode thermal management strategies (heating or cooling) failed to resolve such dynamic temperature changes. Moreover, developing thermal management devices capable of accommodating these temperature variations while remaining simple to fabricate and durable has remained a formidable obstacle. To address these bottlenecks, we design and successfully fabricate a novel dual-mode hierarchical (DMH) composite film featuring a micro-nanofiber network structure, achieved through a straightforward two-step continuous electrospinning process. In cooling mode, it presents a high solar reflectivity of up to 97.7% and an excellent atmospheric transparent window (ATW) infrared emissivity of up to 98.9%. Noted that this DMH film could realize a cooling of 8.1 °C compared to the ambient temperature outdoors. In heating mode, it also exhibits a high solar absorptivity of 94.7% and heats up to 11.9 °C higher than black cotton fabric when utilized by individuals. In practical application scenarios, a seamless transition between efficient cooling and heating is achieved by simply flipping the film. More importantly, the DMH film combining the benefits of composites demonstrates portability, durability, and easy-cleaning, promising to achieve large-scale production and use of thermally managed textiles in the future. The energy savings offered by film applications provide a viable solution for the early realization of carbon neutrality.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Dehua Ma,Yifan Wang,Lin Wang,Ying Peng,Yunguang Yin,Shanyue Hou,Luyi Zhu,Xinqiang Wang,Benxue Liu,Guanghui Zhang,Yongshuai Xie,Dong Xu
Ultralow-density (35–60 mg·cm–3) Yb2O3 nanofibrous membranes (YbFMs) with a multilayer structure were successfully prepared for the first time using Yb-acetylacetone coordination polymer as a precursor. Thanks to the high ceramic yield (62.1%) and excellent spinnability of the precursor, the YbFMs exhibited outstanding flexibility, which does not cause damage even when bent or knotted. The tensile strength of the YbFMs was 1.69 MPa, and the maximum elongation could reach 33%. Notably, the YbFMs exhibited robust fatigue resistance, retaining 87.2% of the initial stress even after 500 buckling cycles and preserving 84.75% of the initial stress in compression resilience. Moreover, the YbFMs exhibited flexibility and compressive performance in the temperature range of −196–1350 °C. The thermal conductivity of the YbFMs was 28.9–34.6 mW·m–1·K–1. At a hot surface temperature of 1350 °C, the 6 mm thick YbFMs could reduce the back temperature by about 1070 °C. Thus, YbFMs are expected to be a flexible insulation material at extremely high temperatures.
研究领域:
材料科学
·
能源科学
✓ 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）