LWT-FOOD SCIENCE AND TECHNOLOGY
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2025
·
IF 6.6
Qianfei Jia,Zijian Wu,Limin Wang,Wen Zhang,Yuan Li,Shufen Li,Yuxi Qin
This study aims to investigate the fabrication of composite films using coaxial electrospinning, and the interactions between zein and shellac was investigated through multi-spectroscopic methods. Spectroscopic analysis revealed that shellac quenches the intrinsic fluorescence of zein through both dynamic and static quenching mechanisms, with hydrophobic interactions and hydrogen bonding serving as the primary forces driving this interaction. The zein/shellac composite films exhibited a smooth, bead-free morphology. The addition of shellac significantly enhanced the mechanical properties of the composite films by integrating uniformly into the zein matrix, achieving a maximum tensile strength of 1.15 MPa in the Z-S6 film and an elongation at a break of 55.24%. Additionally, the thermal stability of the zein/shellac composite films improved while their barrier properties were slightly reduced. These findings suggest that incorporating shellac into the zein films enhances their physical properties for food packaging applications.
研究领域:
材料科学
·
食品科学
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产品关联
DOI
高影响因子
Biomedical Materials
·
2021
·Vol. 16
·期 6
·065014
·
IF 3.715
Caini Yuan,Xinyun Long,Jinghua Li,Qing Cai
As a biocompatible and biodegradable polymer, poly(lactide-co-glycolide) (PLGA) has been widely used as a carrier to achieve controlled drug delivery in various forms. Focusing on skin tumor treatment, herein 5-fluorouracil (5-FU) was embedded into the core of coaxially electrospun PLGA fibers to get a drug-loaded core–shell fibrous membrane. In the coaxial electrospinning, poly(vinylpyrrolidone) was applied in the inner flow to facilitate the formation of the core–shell structured fibers. The morphology and micro-structure of the fibers were characterized by scanning electron microscope and transmission electron microscope. The influences of the molecular weights and chemical compositions of PLGA copolymers on the release behaviors were studied. The cytotoxicity of the fibers was characterized by cell proliferation and living-dead cell staining experiments. The results showed that faster release rates would be obtained if the copolymers were of lower molecular weights and higher fraction of glycidyl unit. All the prepared 5-FU loaded fibrous membranes were non-cytotoxic, suggesting their potential applications in skin tumor treatment.
研究领域:
药学
·
生物医学工程
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肿瘤学
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产品关联
DOI
PubMed
高影响因子
Nanoscale Research Letters
·
2014
·Vol. 9
·期 1
·1-10
·
IF 2.481
Li Chen,Wang Zhuan-Hua,Yu Deng-Guang,Williams Gareth R
This manuscript reports a new type of drug-loaded core-shell nanofibers that provide tunable biphasic release of quercetin. The nanofibers were fabricated using a modified coaxial electrospinning process, in which a polyvinyl chloride (PVC)-coated concentric spinneret was employed. Poly (vinyl pyrrolidone) (PVP) and ethyl cellulose (EC) were used as the polymer matrices to form the shell and core parts of the nanofibers, respectively. Scanning and transmission electron microscopy demonstrated that the nanofibers had linear morphologies and core-shell structures. The quercetin was found to be present in the nanofibers in the amorphous physical status, on the basis of X-ray diffraction results. In vitro release profiles showed that the PVP shell very rapidly freed its drug cargo into the solution, while the EC core provided the succedent sustained release. Variation of the drug loading permitted the release profiles to be tuned.
研究领域:
药剂学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Shencong Kou,Chaoqi Liu,Yuan Mu,Wenhao Peng,Xin Li,Biaoping Zhang,Bozhi Yang,Zhaohui Huang,Fengkun Hao,Xin Min,Minghao Fang
Composite phase-change thermoregulatory fiber films were successfully fabricated using coaxial electrospinning, with polyacrylonitrile fiber films serving as the sheath and octadecane as the core phase-change material. The optimized phase-change fiber films, produced at a sheath feed rate of 0.60 mL/h and a core feed rate of 0.25 mL/h, exhibited the ability to absorb, store, and release thermal energy within the human comfort temperature range (approximately 28 °C), achieving a high melting enthalpy of 171.6 J/g, indicative of excellent heat storage capacity. Moreover, these fiber films demonstrated outstanding thermal stability, retaining a latent heat of 117.7 J/g after 100 heating–cooling cycles, along with excellent mechanical properties, including a tensile strength of 2.418 MPa, tensile yield stress of 2.331 MPa, tensile strain at break of 36.5%, and an elastic modulus of 58.226 MPa. The films also exhibited an exceptional thermal management performance. This study introduces a promising phase-change material for advanced applications in smart textiles, enabling efficient temperature regulation and energy conservation while ensuring comfort during wear.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Mingjie Wang,Yi Liu,Gui Yang,Tiantian Xiang,Youxin Ji,Fengmei Su,Chuntai Liu
In order to maintain the human body temperature within a comfortable range in harsh environments, flexible and wearable thermal management fabrics that can combine energy storage and multi-modal heat recharging ability are urgently needed. Here, a strategy of coaxial electrospinning and spray coating was proposed to prepare the MXene-coated core-sheath phase change fibers to satisfy the above requirement. The hierarchical structure endows the composite film with phase change energy storage and photo/electro-thermal multi-modal heat charging performance. Specifically, the encapsulated paraffin wax (PW) in flexible polyurethane (PU) fibers has a high enthalpy value of 91.7 J/g, meanwhile, the flexible film exhibits excellent photo-thermal performance conversion capability (up to 40 °C under the irradiation intensity of 30 mW/cm 2 ) and electro-thermal conversion capability (up to 40 °C at the voltage of 1.5 V) at extremely low MXene loading (0.23 mg cm −2 ), which endows the MXene/PU@PW (MPP) ability of “heat recharging” by low light power density or low voltage. The multifunctional fabrics with phase change function and multi-modal heat recharging capacity exhibit great potential application in the design of wearable personal thermal management.
研究领域:
材料科学
·
纺织工程
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Shangheng Jiang,Shiqiang Liang,Chunxiao Hu,Yuanfang Fan,Zhongmin Su,Zhi Geng,Chi Wang
Membrane Distillation (MD) technology stands out for its cost-effectiveness and sustainability in diverse applications, such as high-salinity wastewater treatment and seawater desalination. However, conventional MD membranes frequently encounter challenges associated with inadequate permeate flux and insufficient anti-wetting performance. In the present study, we fabricated a series of ZIF-CoZn@PVDF-HFP composite nanofiber membranes with a core–shell structure via coaxial electrospinning. Here, PVDF-HFP functions as the core, while a blend of bimetallic Zeolitic imidazolate framework ZIF-CoZn nanoparticles and PVDF-HFP constitutes the shell. Through the utilization of the coaxial technology, functional nanoparticles achieve uniform and stably dispersed on the nanofiber surface, leading to the creation of a secondary rough structure in addition to the inherent roughness of single-nozzle electrospinning. This results in a surface with a 3D-hierarchical structure. The significantly amplifies the evaporation area on the surface of the composite nanofiber membrane, thereby bolstering the permeate flux in the MD process. Additionally, the incorporation of bimetallic ZIF-CoZn nanoparticles, recognized for their superior hydrophobicity and low thermal conductivity, improves the anti-wetting and heat-insulating properties of the composite nanofiber membrane, further advancing permeate flux performance. Using a 35 g L −1 NaCl as the feed solution, the optimal 1 % ZIF-CoZn@PVDF-HFP composite nanofiber membrane demonstrated a permeate flux of 21.8 L m −2 h −1 , coupled with a salt rejection rate exceeding 99.9 %. Even during long-term MD testing, it maintained excellent insulation and anti-wetting capabilities. Our research offers a convenient and effective approach for fabricating anti-wetting composite nanofiber membranes.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Lin Wang,Liguang Yang,Dehua Ma,Chonghe Xu,Xiaojing Liu,Xinzhu Gan,Pinghui Ge,Luyi Zhu,Gaocheng Zhang
In this study, grooved TiO 2 /ZrO 2 ceramic fibers were prepared via coaxial electrospinning, which exhibit enhanced thermal insulation and superior mechanical properties. The fibers were architected with a distinctive core-shell structure, comprising a TiO 2 shell that serves as an effective radiation shield and a ZrO 2 core that maintains mechanical robustness. The interdiffusion of Zr and Ti atoms at the interface facilitated a seamless transition between TiO 2 and ZrO 2 , effectively inhibiting TiO 2 grain coarsening and substantially enhancing the tensile strength of the fibers, exemplified by the 1.47 ± 0.08 MPa achieved in the TZ-5 sample. Through control of the injection rate during electrospinning, we optimized the fibrous morphology to attain a synergistic balance of strength, flexibility and thermal insulation. The fibers showcased exceptional thermal insulation properties with thermal conductivity values ranging from 0.0294 to 0.0278 W m −1 K −1 and an average infrared reflectance exceeding 87 %. Practical thermal insulation tests confirmed the superior insulation performance of the TiO 2 /ZrO 2 fibrous membranes.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Lin Wang,Dehua Ma,Chonghe Xu,Xinzhu Gan,Pinghui Ge,Luyi Zhu,Xinqiang Wang,Yadong Lv
With the increasingly serious issues of energy conservation and emission reduction, hollow fibers have attracted wide attention as materials that have structural advantages in terms of thermal insulation . Herein, we report the preparation of flexible hollow TiO 2 fibrous membranes via coaxial electrospinning. To optimize the thermal-insulation performance of the fibers, hollow fibers with different diameters and pore sizes were prepared by adjusting the feeding rate of the core spinning solution. Optimum conditions were achieved at a feeding rate of 2 mL/h for the shell solution and 0.4 mL/h for the core solution. The hollow fibers had a compact tube wall structure and good mechanical properties , and the tensile strength of the fibrous membranes reached 0.652 ± 0.119 MPa. In addition, the hollow fibrous membranes have excellent thermal insulation properties with an average reflectance of more than 89% and a room temperature thermal conductivity of less than 0.0294 ± 0.00015 W m −1 K −1 . In practical experiments, the temperature can be reduced from 1174.6 to below 273.6 °C using 15-mm-thick fibrous membranes, which confirms its excellent thermal insulation. Flexible hollow TiO 2 fibrous membranes have a wide range of insulation applications.
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
MATERIALS SCIENCE FORUM
·
2021
·
IF 0
Jia Li,Shuai Lin,Yue Long Ma,Xian Hua Xu,Wei Zheng,Li Bo Li
The coaxial electrospun fibers with large specific surface area, high porosity and core-shell structure have been great applied in biomedical field, especially as drug delivery carriers. In this paper, PLGA(polylactic acid/glycolic acid copolymer) was used as the core and the mixture of PLGA and gelatin was used as the shell. PLGA/gelatin fiber was prepared by coaxial electrospinning technology. The effects of different parameters on the surface morphology and the diameter of fibers were investigated.
研究领域:
生物材料学
·
医学工程
✓ 已验证
DOI
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Fenglian Tong,Jixi Guo,Yanliang Pan,Huibiao Liu,Yan Lv,Xueyan Wu,Dianzeng Jia,Xiaojuan Zhao,Shengchao Hou
Commercial graphite with low theoretical capacity cannot meet the ever-increasing requirement demands of lithium-ion batteries (LIBs) caused by the rapid development of electric devices. Rationally designed carbon-based nanomaterials can provide a wide range of possibilities to meet the growing requirements of energy storage. Hence, the porous walnut anchored on carbon fibers with reasonable pore structure, N -self doping (10.2 at%) and novel structure and morphology is designed via interaction of inner layer polyethylene oxide and outer layer polyacrylonitrile and polyvinylpyrrolidone during pyrolysis of the obtained precursor, which is fabricated by coaxial electrospinning. As an electrode material, the as-made sample shows a high discharge capacity of 965.3 mA h g −1 at 0.2 A g −1 in the first cycle, retains a capacity of 819.7 mA h g −1 after 500 cycles, and displays excellent cycling stability (475.2 mA h g −1 at 1 A g −1 after 1000 cycles). Moreover, the capacity of the electrode material still keeps 260.5 mA h g −1 at 5 A g −1 after 1000 cycles. Therefore, the obtained sample has a bright application prospect as a high performance anode material for LIBs. Besides, this design idea paves the way for situ N -enriched carbon material with novel structure and morphology by coaxial electrospinning.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 25
·21204-21209
·
IF 3.289
Yafan Wan,Pucha Zhou,Yaodong Liu,Hongxiang Chen
This study focused on the preparation of wearable polyacrylonitrile (PAN)/phase-change material (PCM) sheath/core nano-fibers by coaxial electro-spinning technology. PAN was used as the sheath material to make fibers comfortable to human skin, and isopropyl palmitate and paraffin oil were used as sample PCMs. The electro-spinning conditions are critical for encapsulating a PCM by a PAN shell and forming a uniform sheath–core structure. Our experiments show that these PCMs could be well encapsulated in PAN hollow fibers and function to stabilize environmental temperature in a narrow range. This study provides a versatile and feasible way to fabricate PAN/PCM sheath/core homo-thermal nano-fibers with various temperature stabilization windows. Using these homo-thermal nano-fibers as clothing materials will be able to abate people’s discomfort during a sudden environmental temperature change.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2021
·
IF 4.43
Zhuofan Qin,Liqiang Yi,Shuoshuo Wang,Lina Wang,Juming Yao,Guocheng Zhu,Jiri Militky,Mohanapriya Venkataramam,Ming Zhang
Phase change fibers (PCFs) as a kind of composite material, the composition and spatial distribution of each phase have a great influence on its thermal and mechanical properties . In this article, PCFs with polyvinylpyrrolidone (PVP), polyvinyl butyral (PVB), and polyacrylonitrile (PAN) as sheath and 30% octadecane kerosene as core were prepared by coaxial electrospinning. It was found that octadecane had the highest supercooling degree when it was encapsulated in PVB. Thus, we used pure octadecane, 30% octadecane of isopropanol, chloroform, and kerosene solutions as core solutions, adjusted the fine structure of octadecane in PVB sheath, and four kinds of PCFs with different octadecane particle size and spacing were prepared. Successfully reduced the supercooling degree of octadecane. To compare the mechanical properties of the four fibers. It was found that the composite fiber obtained by using isopropanol as octadecane solvent had the most comprehensive mechanical performance. To find a universal method to control the distribution structure of phase change materials (PCMs) in fibers by coaxial electrospinning, we used PAN and PVDF as the sheath solution, pure octadecane, 30% octadecane in isopropanol, chloroform, petroleum ether, and kerosene solutions as a core solution to prepare the PCFs. Characterization results and analysis of the properties of solutions showed that only when the viscosity of the core and sheath solution was relatively low, it could obtain the bamboo-like structured fibers. And continuous core-sheath structured fibers could be obtained in two situations. First, the low viscosity of sheath solution and high viscosity of core solution; second, the high viscosity of sheath solution.
研究领域:
材料科学
·
纺织工程
✓ 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）