نتایج جستجو برای: electrospinning process

تعداد نتایج: 1315519  

2016
Gernot Hochleitner Almoatazbellah Youssef Andrei Hrynevich Tomasz Jungst Jodie N. Haigh Paul D. Dalton

Additive manufacturing with electrohydrodynamic direct writing is a promising approach for the production of polymeric microscale objects. In this study we investigate the stability of one such process, melt electrospinning writing, to maintain accurate placement of the deposited fibre throughout the entire print. The influence of acceleration voltage and feeding pressure on the deposited poly(...

Journal: :Biomaterials 2012
Yen B Truong Veronica Glattauer Kelsey L Briggs Stefan Zappe John A M Ramshaw

Preparation of microfibre constructs of collagen by electrospinning has been problematic due to the instability of collagen in volatile solvents, such as 1,1,1,3,3,3-hexafluoro-2-propanol, so that electrospinning leads to a substantial amount of gelatin fibres. In the present study we have demonstrated the production of collagen-based microfibre constructs by use of a layer-by-layer coating pro...

Journal: :Advanced Energy Materials 2021

In article number 2000845 Yuming Chen, Ziqiang Wang, Qinghua Jing Yang, Ju Li, Yiu-Wing Mai and co-workers review electrospinning-based strategies for battery materials. The combination of electrospinning techniques with other materials processing is a powerful synthesis strategy that can tailor the structural compositional features electrode energy storage applications. synthesized nanomateria...

Background and purpose: Cytotoxic drugs are a group of chemicals that raise concerns over the health of healthcare professionals. Therefore, accurate methods are needed to investigate the traces of these drugs. This study was done to fabricate and optimize molecularly imprinted membrane as a specific absorbent in assessment of occupational exposure to 5-fluorouracil. Materials and methods: 5-F...

2012
R. Rošic

The subject of nanomedicine has seen a surge in research activity over the past decade, with nanofibers being a particularly active field. Nanofibers are solid, dry fibers with nanometer diameters, made of various polymers, whereas electrospinning is a versatile, simple, elegant, reproducible, continuous and scalable technology for their preparation. Nanofibers are a unique class of materials i...

2017
Jae Won Yoon Yaewon Park Jooyoun Kim Chung Hee Park

Introduction Electrospinning process is broadly used to obtain membrane-like webs with submicron to micron fibers (Li and Xia 2004). Electrospun nanofibers, with its large surface area and multiple pores, can be used to construct unique functional nanostructures for composites, filtration membranes, biomaterials, and breathable textile fabrics (Greiner and Wendorff 2007; Li and Xia 2004; Pham e...

Journal: :Biomacromolecules 2011
Nicholas M Bedford G Douglas Winget Srikoundinya Punnamaraju Andrew J Steckl

Electrospun fibers consisting of poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) (PEDOT/PSS) and poly(ethylene oxide) (PEO) have been used to successfully encapsulate and stabilize thylakoid membrane vesicles isolated from spinach. Light-driven electronic properties were measured. Fibers with immobilized thylakoids show higher electrical conductivity compared with fibers without thylak...

Journal: :Bio-medical materials and engineering 2014
Long Chen Jian Kang Sachiko Sukigara

Superfine Particles (SP) of soluble eggshell membrane and medical grade polyurethane (MPU) blend nanofibers were prepared by electrospinning different blend ratios of SP/MPU suspensions for regeneration of the natural fiber-like structure of the eggshell membrane. The addition of SP had no obvious effect on the electrospinning process of MPU nanofibers, and the SP were randomly dispersed in the...

2013
D. M. Correia J. Padrão L. R. Rodrigues F. Dourado S. Lanceros-Méndez V. Sencadas

The thermal and hydrolytic degradation of electrospun gelatin membranes cross-linked with glutaraldehyde in vapor phase has been studied. In vitro degradation of gelatin membranes was evaluated in phosphate buffer saline solution at 37 oC. After 15 days under these conditions, a weight loss of 68 % was observed, attributed to solvation and depolymerization of the main polymeric chains. Thermal ...

2006
Richard J. Spontak Tushar K. Ghosh

Proof of the concept has been established through series of electrospinning experiments with different PEO and block copolymer concentrations. An increase of the surface peptide functional groups characterized by X-ray Photoelectron Spectroscopy (XPS) indicates 5~10 times aggregation of the block copolymer on the surface of the electrospun fibers. By varying the PEO and BCP concentrations, cond...

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