نتایج جستجو برای: elecotrospun nanofibers

تعداد نتایج: 7124  

2017
Jing Li Guocheng Song Junrong Yu Yan Wang Jing Zhu Zuming Hu

Solution blow spinning (SBS) is an innovative process for spinning micro/nanofibers. In this paper, polyamic acid (PAA) nanofibers were fabricated via a SBS apparatus and then imidized into polyimide (PI) nanofibers via thermal process. The morphology and diameter distributions of PAA nanofibers were determined by scanning electron microscope (SEM) and Image Tool software, the processing parame...

2017
Haiying Du PengJun Yao Yanhui Sun Jing Wang Huisheng Wang Naisen Yu

In₂O₃/SnO₂ composite hetero-nanofibers were synthesized by an electrospinning technique for detecting indoor volatile organic gases. The physical and chemical properties of In₂O₃/SnO₂ hetero-nanofibers were characterized and analyzed by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), Energy Dispersive X-Ray Spectroscopy (EDX), specific surface Brunauer-Emmett-Tell...

2016
Xiaoyi Sun Zhenwei Yu Zhengyuan Cai Lingyan Yu Yuanyuan Lv

Voriconazole (VRC) incorporated in composited polyvinyl alcohol (PVA)/hydroxypropyl-β-cyclodextrin (HPβCD) blended nanofibers were produced via electrospinning for efficient ophthalmic delivery. The VRC loading capacity increased with increasing HPβCD content. The optimal solution for electrospinning consisted of 8% (w/v) PVA, 4% (w/v) HPβCD and 0.5% (w/v) VRC. The nanofibers exhibited bead-fre...

Journal: :Nanotechnology 2012
Wei Song David C Markel Sunxi Wang Tong Shi Guangzhao Mao Weiping Ren

The failure of prosthesis after total joint replacement is due to the lack of early implant osseointegration. In this study polyvinyl alcohol-collagen-hydroxyapatite (PVA-Col-HA) electrospun nanofibrous meshes were fabricated as a biomimetic bone-like extracellular matrix for the modification of orthopedic prosthetic surfaces. In order to reinforce the PVA nanofibers, HA nanorods and Type I col...

2014
Bin Wu Jiefeng Pan Liang Ge Liang Wu Huanting Wang Tongwen Xu

The novel oriented electrospun nanofiber membrane composed of MOFs and SPPESK has been synthesized for proton exchange membrane fuel cell operating at high temperature and anhydrous conditions. It is clear that the oriented nanofiber membrane displays the higher proton conductivity than that of the disordered nanofiber membrane or the membrane prepared by conventional solvent-casting method (wi...

2005
Ioannis S. Chronakis

Electrospinning is a very simple and versatile process by which polymer nanofibers with diameters ranging from a few nanometers to several micrometers (usually between 50 and 500 nm) can be produced using an electrostatically driven jet of polymer solution (or polymer melt). Significant progress has been made in this process throughout the past few years and the resultant nanostructures have be...

Objective(S): Electrospinning of chitosan/polyethylene oxide (CS/PEO) nanofibers with the addition of cefazolin to create nanofibers with antimicrobial properties were examined. Methods: Polymeric nanofibers including CS/PEO and CS/PEO /cefazolin, were produced by electrospinning method. The range of nanofiber was 60-100 nm in diameter and measured with I...

Journal: :physical chemistry and electrochemistry 0

polypyrrole (ppy) nanofibers have been fabricated on glassy carbon electrode (gce) usingelectrochemical technique. electropolymerization of pyrrole (py) for the fabrication of ppy nanofiberswas occurred on gce by applying a fixed potential of about 0.85 v for 120 sec in a mild basic solutioncontaining sodium carbonate and sodium perchlorate. in the mild basic media, the monomer, py, isoxidized ...

2006
Sarah E. Baker Kiu-Yuen Tse Chang-Soo Lee Robert J. Hamers

We describe recent experiments aimed at using carbon nanofibers for biosensing applications. Vertically aligned carbon nanofibers are grown on molybdenum electrodes to provide electrical contact to the nanofibers. Upon exposure to electrolyte solutions, we find that short nanofibers of <1 Am length can be wet and dried without significant mechanical disruption. However, longer fibers are prone ...

2013
Huaqing Yu Baojun Li

Nanoscale wavelength-converted optical components are promising components for communication and optical information processing in integrated photonic system. In this work, we report a facile strategy for realizing continuously tunable wavelength-converted wave-guiding in dye-doped nanofibers. The nanofibers with diameters of 200-800 nm have an absorption coefficient of about 80 cm(-1) and a se...

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