FIBERS AND POLYMERS
·
2022
·Vol. 23
·期 5
·1225-1234
·
IF 2.347
Li Siqi,Yin Jing,Xu Lan
As biomaterials with excellent biocompatibility, biodegradation and low toxicity, poly(ε-caprolactone) (PCL) and poly(lactic-co-glycolic acid) (PLGA) are extensively applied as wound dressing and surgical suture in biomedical field. In this paper, an oblique section free surface electrospinning (OSFSE) apparatus was utilized to prepare high-quality and high-output ZnO/PLGA/PCL nanofiber membranes (NFMs) for antibacterial materials, which could significantly increase the production of ZnO/PLGA/PCL NFMs from 0.01–0.1 g/h of traditional electrospinning to 30.84 g/h of OSFSE. The influences of the weight proportion of PLGA and PCL on the viscosity and conductivity of electrospinning solutions along with the yield, morphology and wettability of PLGA/PCL NFMs were researched, and the optimum weight ratio of 6:4 was determined. Then the effects of ZnO contents on the electrospinning solution properties as well as the yield, morphology, structure, wettability, mechanical property and antibacterial performance of ZnO/PLGA/PCL NFMs with the optimal ratio of PLGA and PCL were studied. The results illustrated that additive nano-ZnO could improve markedly the antibacterial effect of NFMs, and the NFMs with 3 wt% nano-ZnO had excellent antibacterial effect on Escherichia coli (95.3 %) and Staphylococcus aureus (95.7 %).
研究领域:
生物医学工程
·
材料科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Wenji Zheng,Zhen Liu,Rui Ding,Yan Dai,Xiangcun Li,Xuehua Ruan,Gaohong He
Electrospun fibers composite membrane shows an insufficient CO 2 permeability due to the impermeable polymer fibers. In this work, highly permeable poly(1-trimethylsilyl-1-propyne) (PTMSP) electrospun fiber were utilized to construct continuous and fast transport pathway with low-resistance for gas molecules in PEO matrix. The PEO/PTMSP electrospun fiber composite membrane (EFCM) was obtained by the in-situ polymerization of polyethylene glycol (PEG) into the voids of PTMSP electrospun fibers, which is demonstrated by FTIR and XPS characterizations. Furthermore, the obtained EFCM is dense and defect-free, which is confirmed by SEM images. Specifically, the PTMSP fibers and PEO matrix present good interfacial compatibility, as revealed by DSC results. In addition, PTMSP electrospun fibers perform as skeleton for EFCM to reinforce the membrane mechanical properties. The PEO/PTMSP EFCM shows CO 2 permeability of 281 Barrer and CO 2 /N 2 selectivity of 32.94. The CO 2 permeability is 280% higher than that of pure PEO membrane, which is resulted from the continuous and fast transport pathway provided by PTMSP electrospun fibers. The CO 2 /N 2 selectivity is enhanced by 4 to 6 times in comparison with pure PTMSP membrane and PTMSP c-EFM, which can be attributed to the affinity between EO groups of PEO matrix and CO 2 molecules and also the screening effect from the tortuous pathway of PTMSP fibers. This superior gas separation performance of PEO/PTMSP EFCM exceeds most reported PTMSP based membranes, especially its selectivity of CO 2 over N 2 is significantly high. Consequently, this proposed EFCM with continuous and fast transport pathway holds a competitive prospect for polymer based CO 2 capture.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
RARE METAL MATERIALS AND ENGINEERING
·
2014
·
IF 0.153
Cao Xingxing,Zhang Xuebin,Shao Hao,Feng Yi
Ferroferric oxide nanotubes were prepared by calcining and reducing the composite nanofiber precursors fabricated by electrospinning. Influences of the electrospun parameters (PVA concentration of solution, applied voltage and collector distance) on the preparation of the composite nanofiber precursors were discussed. The structural properties of the obtained nanotubes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The formation mechanism of the Fe 3 O 4 nanotubes was investigated through the nonequilibrium heat-treatment procedure. Furthermore, the magnetic property of Fe 3 O 4 was measured using a vibrating sample magnetometer. Results reveal that the tubes show a uniform and continuous morphology, whose outer and inner diameters are about 100 nm and 50 nm, respectively. Fe 3 O 4 possesses saturation magnetization ( M s ) of 54.2 A·m 2 /kg, coercivity ( H c ) of 215×79.6 A/m and remanent magnetization ( M r ) of 12.8 A·m 2 /kg, respectively.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2011
·Vol. 13
·期 11
·3905-3909
·
IF 4.006
Dongfei Sun,Xingbin Yan,Jiangtao Chen,Shengxue Yu,Litian Hu,Qunji Xue
In this paper, Zn2TiO4 and TiN nanofibers were prepared by a facile combination of electrospinning followed by thermolysis under different atmospheres. An N,N-dimethyl formamide (DMF)–ethanol solution of poly(vinylpyrrolidone) (PVP), Ti(IV)–isopropoxide (Ti(OC4H9)4) and zinc acetate (ZnAc) was used as the electrospinning precursor and the electrospun nanofibers were calcined at 600 °C in air to generate Zn2TiO4 nanofibers. Subsequently, a conversion from Zn2TiO4 nanofibers to TiN nanofibers was realized through a heat treatment at 1000 °C under an ammonia atmosphere. Investigations using field-emission scanning electron and transmission electron microscopes (FESEM and TEM) revealed the nano-scale fibrous morphology of the obtained products. Energy-dispersive spectroscopy (EDS) and X-ray diffraction (XRD) studies confirmed the chemical composition and crystalline structure of the Zn2TiO4 and TiN nanofibers, respectively. The electrochemical properties of the as-prepared TiN nanofibers indicated that the capacitance characteristic of the TiN phase was the electric double-layer capacitance. The value of the specific capacitance gradually decreased with the increase of discharge current density.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 15
·11503-11510
·
IF 4.6
Ping Li,Xiaolin Yue,Anhong Li,Can Cui,Lan Wang,Wenyuan Tan
Cobalt 2-methylimidazole (ZIF-67) has been broadly explored for its applications in the treatment of antibiotics in wastewater. However, ZIF-67 in powder form is difficult to recover. In the study, ZIF-67 and Polyvinylidene Fluoride (PVDF) were blended via electrospinning to prepare ZIF-67/PVDF membrane for adsorption of ciprofloxacin (CIP). The ZIF-67/PVDF membrane demonstrated outstanding adsorption efficiency for CIP, with a maximum adsorption capability of 4087.5 μg cm−2. The adsorption performance of ZIF-67/PVDF remains stable across a wide pH range and is unaffected by ionic interference. The ZIF-67/PVDF adsorbent follows pseudo-second-order kinetics and the Langmuir model. Furthermore, thermodynamic research indicates the adsorption of CIP is a spontaneous and exothermic process. It is proposed that the adsorption mechanism of CIP onto ZIF-67/PVDF involves electrostatic interactions, hydrogen bonding, π–π interactions, coordination bonding, and hydrophobic interactions.
研究领域:
环境科学
·
材料科学
·
水处理技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2012
·Vol. 108
·期 4
·961-965
·
IF 1.63
Shao Hao,Zhang Xuebin,Chen Fanyan,Liu Shasha,Ji Yi,Zhu Yajun,Feng Yi
In this paper, smooth α -Fe 2 O 3 nanotubes have been successfully synthesized by electrospinning of ferric nitrate–polyvinyl alcohol solution followed by calcination in air. The morphologies and structures of the samples were characterized by transmission electron microscopy, scanning electron microscopy and X-ray diffraction. The catalytic properties were studied by differential thermal analysis and thermogravimetric analysis. The results indicated that the as-prepared α -Fe 2 O 3 nanotubes showed a continuous morphology and an extremely high degree of crystallization. The average inner and outer diameters of the obtained α -Fe 2 O 3 nanotubes were about 60 nm and 100 nm, respectively. The obtained α -Fe 2 O 3 nanotubes were able to lower the temperature of the high-temperature thermal decomposition of ammonium perchlorate, while they had little effect on the crystallographic phase transformation and the low-temperature thermal decomposition.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2015
·
IF 4.074
Xianglong Li,Huanhuan Chen,Bin Yang
Centrifugal spinning and electrospinning have proved to be effective techniques for fabricating micro-to-nanofibers. However, starches of amylopectin content above 65% cannot be fabricated to fiber by electrospinning. This paper is focus on the centrifugal spinnability of amylopectin rich starches. We investigated the amylopectin content of starches by Dual-wavelength colorimetry, studied the rheological properties of starch dopes to determine entanglement concentration ( c e ) by rotary rheometer. Results indicated that amylopectin rich native corn and potato starches, which with amylopectin content higher than 65%, were suitable for centrifugal spinning to micro-to-nanofibers. Additionally, starch-based fibers were successfully fabricated from the amylose rich corn starch as well. Rheological studies showed that the entanglement concentration ( c e ) of starch solution was crucial for successful centrifugal spinning.
研究领域:
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 8
·3430
·
IF 4.6
Hongtao Guo,Xiaofan Ma,Qiqi Lv,Chunmei Zhang,Gaigai Duan
Compared with traditional metal materials, carbon-based materials have the advantages of low density, high conductivity, good chemical stability, etc., and can be used as reliable alternative materials in various fields. Among them, the carbon fiber conductive network constructed by electrospinning technology has the advantages of high porosity, high specific surface area and rich heterogeneous interface. In order to further improve the conductivity and mechanical properties of pure carbon fiber films, tantalum carbide (TaC) nanoparticles were selected as conductive fillers. The crystallization degree, electrical and mechanical properties of electrospun TaC/C nanofibers at different temperatures were investigated. As the carbonization temperature increases, the crystallization degree and electrical conductivity of the sample also increases, while the growth trend of electrical conductivity is markedly slowed. The best mechanical properties of 12.39 MPa was achieved when the carbonization temperature was 1200 °C. Finally, through comprehensive analysis and comparison, it can be concluded that a carbonization temperature of 1200 °C is the optimum.Keywords:electrospinning;electrical property;pyrolysis temperature;carbonization
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2023
·Vol. 24
·期 8
·7649
·
IF 5.6
Yanjing Liu,Xiyue Li,Yuezhou Liu,Yaping Huang,Fuming Wang,Yongfang Qian,Ying Wang
Due to their high porosity, large specific surface area, and structural similarity with the extracellular matrix (ECM), electrospun nanofiber membranes are often endowed with the antibacterial properties for biomedical applications. The purpose of this study was to synthesize nano-structured Sc2O3-MgO by doping Sc3+, calcining at 600 °C, and then loading it onto the PCL/PVP substrates with electrospinning technology with the aim of developing new efficient antibacterial nanofiber membranes for tissue engineering. A scanning electron microscope (SEM) and energy dispersive X-ray spectrometer (EDS) were used to study the morphology of all formulations and analyze the types and contents of the elements, and an X-ray diffraction (XRD), thermogravimetric analysis (TGA), and Fourier transform attenuated total reflection infrared spectroscopy (ATR-FTIR) were used for further analysis. The experimental results showed that the PCL/PVP (SMCV-2.0) nanofibers loaded with 2.0 wt% Sc2O3-MgO were smooth and homogeneous with an average diameter of 252.6 nm; the antibacterial test indicated that a low load concentration of 2.0 wt% Sc2O3-MgO in PCL/PVP (SMCV-2.0) showed a 100% antibacterial rate againstEscherichia coli(E. coli).Keywords:nano-textured;Sc2O3-MgO;antibacterial;electrospinning
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of the American Chemical Society
·
2014
·
IF 11.444
Huilin Hou,Lin Wang,Fengmei Gao,Guodong Wei,Bin Tang,Weiyou Yang,Tom Wu
Recently, preparation of mesoporous fibers has attracted extensive attentions because of their unique and broad applications in photocatalysis, optoelectronics, and biomaterials. However, it remains a great challenge to fabricate thoroughly mesoporous nanofibers with high purity and uniformity. Here, we report a general, simple and cost-effective strategy, namely, foaming-assisted electrospinning, for producing mesoporous nanofibers with high purity and enhanced specific surface areas. As a proof of concept, the as-fabricated mesoporous TiO2 fibers exhibit much higher photocatalytic activity and stability than both the conventional solid counterparts and the commercially available P25. The abundant vapors released from the introduced foaming agents are responsible for the creation of pores with uniform spatial distribution in the spun precursor fibers. The present work represents a critically important step in advancing the electrospinning technique for generating mesoporous fibers in a facile and universal manner.
研究领域:
材料科学
·
纳米技术
·
电化学
·
催化
·
高分子科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Cen Zhang,Sicheng Li,Di Chen,Wenjing Lu,Chaogeng Xiao
Multicore-shell nanofibers were fabricated by integrating emulsion electrospinning and coaxial electrospinning technologies, in which the multicore section of the nanofibers was prepared by electrospinning of gelatin-stabilized emulsions, and the shell layer was coaxially electrospun from zein solution. Coaxial electrospinning of zein helped form emulsion-based electrospun fibers with bead-in-string, spindle-like, and straight morphologies. The hydrogen bonding between gelatin and zein contributed to the enhanced thermal properties of coaxially electrospun nanofibers. The coating of zein as shell greatly improved fiber surface wettability and mechanical strength. The release behavior of curcumin from the nanofibers was dominated by Fickian diffusion, and the zein shell as a physical barrier favored the prolonged release of curcumin and then the long-lasting antibacterial activity towards Escherichia coli . This work thus gives an insight into the development of the nanofibers by emulsion-coaxial electrospinning as encapsulation matrices for the application in food products.
研究领域:
食品科学
·
材料科学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
POLYMER COMPOSITES
·
2019
·Vol. 41
·期 3
·1013-1023
·
IF 2.268
Fei Sun,Shih-Yu Huang,Hai-Tao Ren,Ting-Ting Li,Yue Zhang,Ching-Wen Lou,Jia-Horng Lin
This study uses PVDF, PAN, and coaxial electrospinning technique to build a core-sheath structure for TiO 2 @PVDF/PAN electrospun membranes. The resulting electrospun membranes are compared with traditional electrospun membranes in terms of photocatalysis and oil-water separation, which examines the influences of electrospinning fibrous structure. The test results show that the core-sheath structure provides TiO 2 @PVDF/PAN electrospun membranes with a large diameter, high strength, a rough surface, a high photocatalysis, and good oil-water separation. With PVDF as the sheath and PAN as the core, TiO 2 @PVDF/PAN electrospun membranes have a maximum strength of 8.96 MPa and exhibit 97% of rhodamine B pollutant after the exposure to the UV light. Moreover, the oil-water separation rate is 99% and an oil flux is 40 163.79 L·m 2 ·h −1 , and the membrane maintains a high flux after 10 cycles, which makes TiO 2 @PVDF/PAN electrospun membranes an important candidate for treating wastewater produced in industry and daily life.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 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）