COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Haichen Yao,Hongkun Liu,Yihang Hou,Shuang Gao,Jiazi Hou
Perspiration conduction is essential for regulating the body's water and temperature balance. Significant advancements have been achieved in the field of textiles engineered for guiding water movement, thanks to their outstanding and practical control of uneven wetting properties. This progress carries important implications for preserving energy, promoting human well-being, and enhancing comfort. Nonetheless, current textile materials intended for sweat conduction are primarily focus on unidirectional transport of water, neglecting the air permeability during water transportation results in dampness and stickiness especially during heavy perspiration. In this study, a fabric with a tailored antisymmetrical wettability establishing an array of gas transport windows was fabricated via electro-blown spinning, endowing the fabric with long-term air permeability. It demonstrated an air permeability rate (APR) of up to 307.49 mm s −1 , a water vapor transmission (WVT) rate of 3133.76 g m −2 day −1 , and a water absorption rate (WAR) capacity of 2039.01 %. Especially, during the process of sweat wicking, the water infiltration restricted air permeability, however, the designed breathable window still maintained a high gas permeation rate of up to 214.61 mm s −1 , which was much higher than non-soaked commercial jeans and lab coat. Additionally, blueberry anthocyanins was incorporated into fabrics, acting as a portable sweat pH sensor based on colorimetric analysis, which was capable of monitoring the pH levels of sweat. When sweat shifted from acidic to alkaline, the anthocyanins underwent a structural transformation from flavylium cations to quinoid alkali. During the process, the fabric underwent a transition in color, changing from red to blue, which contributed to real-time monitoring of human body health performance in a non-invasive manner. This study presented a dependable method for creating intelligent textiles with patterned antisymmetric wettability, demonstrating significant promise for use in functional fabrics designed for individual moisture control.
研究领域:
纺织工程
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生物医学工程
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材料科学
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产品关联
DOI
高影响因子
AIP Advances
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2024
·Vol. 14
·期 4
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IF 1.4
Zeng Jun,Chen Ying,Xu Guojie,Shi Zhuohao,Luo Zhifeng,Liu Fengbin,Chen Xiaojie,Zou Zebiao,Wang Han,Du Zhiyun
Continuous nanofiber yarns were prepared using the electro-blown and hanging yarn process. Unlike typical electrospinning devices, this method uniquely controls the spinning process to induce the hanging phenomenon, and the resulting hanging yarn is twisted to form nanofiber yarns. A polyvinylidene fluoride nanofiber yarn was successfully prepared using the electro-blown and hanging yarn process. Scanning electron microscopy observations confirmed that the nanofibers prepared by this method exhibited good orientation within the yarn. The results indicate that the conductivity of the polymer solution and the applied voltage are crucial for inducing the hanging yarn process, ensuring stable continuous spinning. A possible mechanism is proposed, suggesting that adjusting the solution’s conductivity and controlling the spinning voltage can utilize defects in the yarn-hanging process during spinning to prepare nanofiber yarns.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
Foods
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2024
·Vol. 13
·期 13
·2040
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IF 4.7
Yupeng Ren,Jianhui An,Cheng Tian,Longchen Shang,Yexing Tao,Lingli Deng
Electrospinning biopolymer nanofibers have emerged as promising candidates for food packaging applications. In this study, dextran/zein nanofibers were fabricated using electro-blown spinning and subsequently cross-linked via the Maillard reaction (MR) at 60 °C and 50% relative humidity. Compared to traditional electrospinning, the introduction of air-blowing improved the sample preparation speed by 10 times. SEM analysis revealed that the nanofiber morphology remained stable upon MR treatment for 24 h. FTIR spectroscopy confirmed that the MR led to a deformation in the protein conformation and an increase in hydrophilicity and elasticity in the nanofibers cross-linked for 6 h. MR treatment for 18 h considerably enhanced the hydrophobicity and elastic modulus owing to covalent bond formation. Thermal analysis indicated an improved thermal stability with increasing MR duration. Mechanical property analysis revealed an increase in elastic modulus and a decrease in elongation at break for the nanofibers cross-linked for more than 6 h, indicating a trade-off between rigidity and flexibility. Notably, the water vapor permeability of the nanofibers cross-linked for 6 and 18 h was remarkably higher, which can be ascribed to the fiber morphology retention upon water evaporation. Overall, MR-cross-linked dextran/zein/xylose nanofibers showed tunable properties, making them a suitable encapsulation system for bioactive compounds.
研究领域:
食品科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Today
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2023
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IF 17.4
Jinling Zhu,Hailiang Yang,Leitao Cao,Chenchen Dai,Jing Ren,Junrui Liang,Shengjie Ling
Direct functionalization of structural materials can provide an elegant balance between their structure, performance, and function. However, effective direct functionalization techniques are very limited. This work reports a technique to functionalize structural materials in a non-destructive manner, wherein the surface of the materials is selectively etched without compromising their internal structure. In this technique, an ultrathin and transparent silk fibroin ionotronic nanofiber skin (SFINS) is spun on the surface of structural materials through electro-blown spinning, endowing them with electric conductivity and environmental responsiveness. This process is characterized by outstanding scalability, low cost, and high efficiency. In addition, the SFINS can be firmly bonded to the surface of different structural materials, such as glass, metals, polymers, and wood. More importantly, the electro-blown spinning process and the formed SFINS do not alter the structure, properties, and sustainability of the substrate materials . For instance, the transparency of glass and acrylic plates , the texture of wood, the color of plastics, the text of papers, the elasticity of elastomers , as well as their strength are all retained. Consequently, structural materials functionalized under the proposed process can be directly integrated into functional devices that require both structural stability and functional diversity in practice use. In this work, two prototypes are developed to demonstrate the applications of SFINS-functionalized structural materials as tactile receptors for an intelligent sorting manipulator and as a self-powered IntelliSensor for geological hazard early warning. Both examples reveal the advantages of the proposed technique in terms of the balance between the structure, performance, and function of the developed device systems.
研究领域:
材料科学
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生物工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Yibo Liu,Chao Jia,Han Zhang,Haiyang Wang,Pan Li,Luna Jia,Feng Wang,Pengfei Zhu,Hao Wang,Lu Yu,Feipeng Wang,Lingxiao Wang,Xin Zhang,You Sun,Bo Li
Particulate matter of 0.3 μm in diameter (PM0.3) poses a serious threat to the environment and human beings. Ultrathin and -light nanofibrous filters with excellent filtration properties can significantly prevent the detrimental effects of these particles. Here, we develop free-standing polyamide PA-66 ultrafine nanofiber papers for PM0.3 filtration using effective and scalable blow and electro-blow spinning techniques. The smallest average fiber diameter is 61.7 nm, which is 2–3 orders of magnitude smaller than that of conventional textiles. Poly(ethylene terephthalate) nonwovens are selected to fabricate free-standing nanofiber papers of various polymers, including polyamide, poly(methyl methacrylate), poly(vinylpyrrolidone), and poly(ethylene oxide) owing to the smooth surfaces of the nonwovens. This underlying principle can be used to create similar free-standing nanofiber papers from other commodity polymers in the future. Mechanisms of capturing particulate matter with different nanofiber morphologies are discussed. Salt and oil particulates are used to characterize the filtration properties. PA-66 papers are promising reusable filters owing to their mechanical particle-capture mechanism. The blow-spun PA-66 papers show filtration performance of 98.75% efficiency and a pressure drop of 125.44 Pa owing to the “slip” effect caused by the ultrasmall diameter. In the electro-blow spinning process, a supplementary voltage supply is conducive to separating nanofiber bundles into random-oriented nanofibers. Electro-blown spun papers possess an ultrahigh efficiency of 99.99% with a reduced areal density of 0.9 g m–2. These PA-66 papers can be used in a variety of applications, such as reusable personal protective equipment, industrial waste gas treatment, and central ventilation purification systems.
研究领域:
材料科学
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环境工程
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纳米技术
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过滤技术
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DOI
PubMed
高影响因子
Food Bioscience
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2022
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IF 5.318
Songqi Liu,Zaihan Chen,Huange Zhang,Yuanli Li,Taxipalati Maierhaba,Jianhui An,Zhi Zhou,Lingli Deng
To explore the dihydromyricetin or eugenol loaded nanofiber's potential as food active packaging, 0%, 0.1%, 0.5%, and 1.0% dihydromyricetin or eugenol loaded nanofibers were fabricated by electro-blowing spinning, which increased the yield of nanofibers by a factor of 10 times compared to that of traditional electrospinning. The morphology observation by scanning electron microscopy showed similar morphology and diameter distribution of the dihydromyricetin or eugenol nanofibers. Fourier transform infrared spectra analysis indicated that eugenol or dihydromyricetin interacted with proteins through hydrogen bonding. X-ray diffraction profiles of the nanofibers indicated that dihydromyricetin was uniformly distributed within the nanofibers. Nanofibers encapsulated with various concentrations of eugenol or dihydromyricetin showed better barrier properties against water vapors than the free nanofibers, which indicated that the hydrophobic eugenol and dihydromyricetin inhibited the permeation of water molecules through the nanofibers. Tensile tests showed that the nanofibers loaded with 0.5% eugenol or 1.0% dihydromyricetin exhibited relatively higher elastic moduli and lower elongation at break. The nanofibers loaded with dihydromyricetin showed comparable antioxidant activity to that with eugenol in the aspect of ferric and cupper reducing activity, while that with 0.1%–1.0% dihydromyricetin showed superior DPPH radical scavenging activity. Furthermore, both eugenol and dihydromyricetin loaded gelatin/zein nanofibers showed effective antimicrobial activities against Escherichia coli and Staphylococcus aureus . Overall, the dihydromyricetin loaded gelatin/zein nanofibers showed comparable physical and functional properties compared to eugenol, which suggests the application of dihydromyricetin nanofibrous films on food active packaging and the potential application of dihydromyricetin on functional food delivery systems.
研究领域:
材料科学
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食品科学
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纳米技术
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2022
·
IF 7.392
Xing-hai Zhou,Yi-fan Wang,Lin Zhu,Lu Han,Yuan Gao,Li-hua Lyu,Zhen-huan Li
Exploring advanced electrode materials with high lithium storage capacity and long cycling stability is of great importance for further development of lithium-ion batteries (LIBs). Herein, metal sulfide nano-frameworks anchored into 3D honeycomb-like porous carbon nanofibers are well designed and fabricated by electro-blowing spinning method and subsequent carbonization process. The effects of Ni/Co ratios on the nano-frameworks particle size, specific surface area and pore size distribution of fibers are systematically studied. Noticeably, the obtained fibers are crosslinked with each other to form a network film using as freestanding anode of LIBs, which avoids the cumbersome slurry-casting process. Moreover, the porous metal sulfide nano-frameworks meet the demand of high capacity while offering abundant cavities to accommodate volume expansion. More importantly, the 3D honeycomb-like porous carbon nanofibers as an ideal matrix not only provide enough buffer zones to alleviate volume expansion, but also shorten the diffusion pathways of electrons/ions. Benefiting from the advantages of structural feature, the optimized freestanding anode delivers an excellent lithium storage performance, including a high reversible capacity of 736 mAh g −1 after 200 cycles at 0.2 A g −1 and a long cycling stability of 73.5% capacity retention after 500 cycles at 1 A g −1 .
研究领域:
材料科学
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能源存储
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纳米技术
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电化学
✓ 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）