Owner: Recent developments in electrospinning URL:http://electrospun.blogspot.com Join Date: Sun, 04 May 2008 13:02:10 -0500 Rating:0 Site Description: Electrospinning of nanofibers, recent developments and news, job positions and more... Site statistics:Click here
Electrospinning by numbers 2008-04-16 21:05:00 Source: ScirusSource: ISI Web of KnowledgeSource: ISI Web of Knowledge
A hybrid twin screw extrusion/electrospinning method to process nanoparticle-incorporated electrospun nanofibres 2008-05-18 23:05:00 A new hybrid method
ology that fully integrates the processing capabilities of the twin screw extrusion process with electrospinning is described. The hybrid process is especially suited to the dispersion of nanoparticles into polymeric binders and the generation of nanoparticle-incorporated
fibres and nanofibres. The new technology base is demonstrated with the dispersion of β-tricalcium phosphat
CfAM at Rutherford Appleton Laboratory Celebrations 2008-05-18 22:40:00 Professor Geoffrey Mitchell, Director of the Centre for Advanced Microscopy was amongst the two hundred distinguished guests invited to join the RutherfordAppletonLaboratory
(RAL) to mark its 50th Anniversary on 2 November. RAL houses ISIS, the world’s most powerful pulsed neutron source, Diamond, the UK’s new synchrotron source, the Central Laser Facility with some of the world’s most pow Read more:Celebrations
Electrospinning: applications in drug delivery and tissue engineering 2008-05-18 22:21:00 Despite its long history and some preliminary work in tissueengineering
nearly 30 years ago, electrospinning has not gained widespread interest as a potential polymer processing technique for applications in tissue engineering and drug delivery until the last 5-10 years. This renewed interest can be attributed to electrospinning's relative ease of use, adaptability, and the ability to fabricate f
The fabrication of polymeric nanochannels by electrospinning 2008-05-18 01:07:00 Polymeric nanochannels have been fabricated using a cost-effective, fast, one-step method involving the collision of nanosized jets during electrospinning. The nanochannels had a uniform U-shaped cross-section, with a height below 100 nm and lengths around 1 mm. It was explained that the strength of the electric field had an important effect on the formation of the nanochannels. An adhesion test o
Cellular Incorporation Into Electrospun Nanofibers: Retained Viability, Proliferation, and Function in Fibroblasts 2008-05-18 01:02:00 Researchers first time reported cell incorporation into nanofibers. Human foreskin fibroblasts and human adipose-derived adult stem cells (hADAS) were grown to confluence, resuspended in phosphate-buffered saline, and then solubilized in polyvinyl alcohol (PVA). Nanofibers were created using an electrospinning technique across an electric potential of 20 kV. Cell interaction with nanofibers was as
Enhanced filter media drives commercial use of nanofibers 2008-05-19 20:50:00 "The recent announcement of a joint venture between Elmarco of the Czech Republic and Oerlikon Neumag under Oerlikon Textile, the world's largest manufacturer of textile machinery, may mark a significant step in the commercialization of the technology for production of nanofibers, for instance, Nanospider AcousticWeb, which is a sound absorbent material.""Another company, Hills Inc, based in the U Read more:media
Electrospun polyurethane nanofibres having shape memory effect 2008-05-19 18:26:00 Nanofibres having shape memory effect
(SME) were successfully spun from shape memory polyurethanes solution by electrospinning method. Scanning electron microscopy (SEM) images showed that the resulted nanofibres had ultrafine diameter in a range of 50 to 700 nm. Differential scanning calorimetry (DSC) results indicated that the obtained nanofibres would satisfy the structure requirement of segmen
Tong Lin's taking Deakin to the world 2008-05-20 21:13:00 "Electrospinning is currently the only promising technique for producing polymeric nanofibres on a large scale," Professor Wang explained."The key limitation of this technology is that fibres electrospun from many polymers usually have diameters much larger than 100 nanometres. This restricts their applications in advanced areas such as tissue scaffolds and ultra-fine filtration.""We want to break
Ultra-Fine Fibers Produced by Laser-Electrospinning 2008-05-20 21:06:00 Researches from Shinshu University used a CO2 laser as a heat source to avoid thermodegradation in the melt-electrospinning process (termed “laser electrospinning” (LES)). Nylon 6, polypropylene, poly (ethylene terephthalate) and poly (L-lactide-co-ε-caprolactone) fiber webs were prepared by the LES. For Nylon 6 and poly (L-lactide-co-ε-caprolactone), fibers having average diameters of appro Read more:Ultra
, Laser
Fabrication of aluminum nitride (AlN) hollow fibers by carbothermal reduction and nitridation of electrospun precursor fibers 2008-05-20 06:37:00 "The fibers of AlN were synthesized by carbothermal reduction
and nitridation of precursor fibers obtained by electrospinning. XRD result indicated that the wurtzite AlN phase had been successfully synthesized in fibers. The SEM and TEM analysis indicated that the hollow fibers with an out-diameter of about 500 nm and a wall thickness of about 100 nm were obtained and the crystal in fibers was hex
Nanobioengineered electrospun composite nanofibers and osteoblasts for bone regeneration 2008-05-21 22:57:00 Bone defects represent a medical and socioeconomic challenge. Engineering bioartificial bone tissues may help to solve problems related to donor site morbidity and size limitations. Researchers from National University of Singapore show that the fabrication of electrospun PCL/HA/Gel composite nanofibrous scaffolds has potential for the proliferation and mineralization of osteoblasts for bone regen
Tubular nanofiber scaffolds for tissue engineered small-diameter vascular grafts 2008-05-21 22:50:00 Quick establishment of a confluent and stable endothelial cells (ECs) layer in the lumen of vascular grafts is critical for long-term patency of small-diameter vascular grafts. Scientists from National University of Singapore fabricated tubular nanofiber scaffolds, incorporated ECs onto the lumen of the scaffolds, and established an animal model to prove the basic concept of using the scaffolds as Read more:tissue
A review: Recent advances in polymer fibers 2008-05-24 18:58:00 Scientists from North Carolina State University review
ed the recent advances in polymer fibers:"In recent years, there has been steady progress in developing new polymers and functional polymer fibers. The objectives of this issue are to provide readers an overview of significant advances for the production of high performance fibers such as Kevlar, PBO, Spectra and Dyneema fibers and to describe Read more:Recent
Strategies for economical alternatives for wax replacement in packaging 2008-05-23 18:54:00 Researches from Georgia Inst. Technol., reported studies of the incorporation or blending of various pigments for waterproofing linerboard, along with changes in relevant physical properties. They have observed the impregnation of polymer/pigment blends to increase strength properties substantially, as explained by the increase of modulus in a composite matrix. They also made observations of surfa Read more:Strategies
, replacement
Co-axial electrospinning for nanofiber structures: Preparation and applications 2008-05-26 19:05:00 Researches from North Carolina State University, prepared nanofibers in a core-sheath configuration, using two dissimilar materials, via a novel technique of co-axial electrospinning which has presented unusual potential for use in many novel applications. The studies have addressed issues related to the technology involved and examined the suitability of the technique for producing unique nanosca
Fabrication of continuous conducting gold wires by electrospinning 2008-05-27 19:11:00 An innovative approach is developed by researches from Israel Bar-Ilan University, to electrospin An polymer wires, dissolving HAuCl4 salt in ethanol followed by addition of poly(acrylic acid) with several modifications in the conventional electrospinning system. The as-prepared Au polymer wires are assembled on the rotating drum in between the spinneret (+ electrode) and the conducting substrate
Nanotechnology and Nanofiber Fabrics Rendering Toxic Chemicals Harmless 2008-05-30 22:17:00 Cornell fiber scientist Juan Hinestroza is working with the U.S. government to create fabrics made of functional nanofibers that would decompose toxic industrial chemicals into harmless byproducts. Potential applications include safety gear for U.S. soldiers and filtration systems for buildings and vehicles. Hinestroza, assistant professor of fiber science in the College of Human Ecology, is a mem Read more:Nanotechnology
, Rendering
Nano-tech process produces plastics that are 10 times more stretchable 2008-05-30 22:10:00 Researchers in China report the first successful "electrospinning" of a type of plastic widely used in automobiles and electronics. The high-tech process, which uses an electric charge to turn polymers into thin fibers in the presence of electricity, produced plastic mats that can stretch 10 times more without breaking than the original material and could lead to new uses for the plastic, they say
Production of aligned helical polymer nanofibers by electrospinning 2008-06-03 00:29:00 Scientists developed a new and simple electrospinning method for producing aligned helical polymer nanofibers. The helical fibers were collected by a tilted glass slide. These helical structures were formed by jet buckling due to mechanical instability when hitting collector surface. Formation of the helical structures is dependent on the obliquity of the tilted glass slide and distance away from Read more:Production
Demonstration of electrospinning fibers at MITS 2008-06-01 21:39:00 MITS Summer Institute Professional Development for PreK-8 Educators will be held on July 9, 2008. Explore how science has studied nature’s successful processes and copied them to achieve technological advancements in the field of textiles. Historically, we will see how studying the silkworm and spider led to making synthetic fibers and materials in the laboratory. In present day science, we’ll Read more:Demonstration
Spider web inspires new nano fibre venture 2008-06-04 19:10:00 A Canterbury student whose research into producing ultra-fine nano fibres is supported by Crop & Food Research, has gone on, in collaboration with partners, to develop an electrospinning machine that is being sold to research laboratories around the world..........................As a result of the collaboration, a commercial electrospinning machine has been designed and a company formed in Bl Read more:Spider
Preparation of composite nanofibers containing gold nanoparticles by using poly(N-vinylpyrrolidone) and β- cyclodextrin 2008-06-04 00:02:00 Scientists report a new method for preparing β-cyclodextrin/poly(N-vinylpyrrolidone) composite nanofibers containing gold nanoparticles by electrospinning. β-Cyclodextrin is mixed into fibers as a new material, and it acts as stabilized reagent and reducing reagent in the synthesis of gold nanoparticles. TEM observation confirms that the gold nanoparticles are completely encapsulated within the
Highly polarized luminescence from aligned conjugated polymer electrospun nanofibers 2008-06-06 00:48:00 Scientists from Japan Advanced Institute of Science and Technology show highly polarized photoluminescence (PL) from aligned polyethyleneoxide: polyphenylenevinylene derivative composite nanofibers. They demonstrate PL polarization ratios (parallel to perpendicular) greater than 13. This ratio is further increased (up to ~25) by stretching the nanofibers. According to authors, these results open u
Enhancement of neurite outgrowth using nano-structured scaffolds coupled with laminin 2008-06-05 00:07:00 Cell interactions with scaffolds are important for cell and tissue development in the process of repairing and regeneration of damaged tissue. Scaffolds that mimic extracellular matrix (ECM) surface topography, mechanical stiffness, and chemical composition will be advantageous to promote enhanced cell interactions. Electrospinning can easily produce nano-structured synthetic polymer mats with arc
Sintering-resistant hollow fibers of LaMgAl11O19 prepared by electrospinning 2008-06-07 00:58:00 Lanthanum magnesium hexaaluminate (LMA) is very important ceramic material for catalytic combustion of natural gas. The sintering-resistant hollow fibers of LMA with diameters ranging from 1 to 3 μm were fabricated from alcoholic solutions containing polyvinyl pyrrolidone (PVP) and aqueous solution of lanthanum, magnesium and aluminum nitrates.Ref: doi:10.1016/j.jcrysgro.2008.05.054
Microwave Hall mobility studies on polymer-single walled carbon nanotube composite fibers 2008-06-09 18:27:00 Composite fibers of single
walled carbon nanotube
s dispersed in poly(methyl methacrylate) and polystyrene are prepared using electrospinning. The single fiber electrical conductivity is measured as a function of the composition of carbon nanotubes. A noncontact method of measuring the carrier mobility at microwave frequency (14 GHz) using bimodal cavity is employed. The mobility measurements indi
Electrospinning synthesis of C/Fe3O4 composite nanofibers and their application for high performance lithium-ion batteries 2008-06-08 18:19:00 Researchers produced pure carbon nanofiber and C/Fe3O4 composite nanofibers by electrospinning and subsequent carbonization processes. It has been found that, compared with the pure carbon nanofiber, the 600ºC-carbonized C/Fe3O4 composite nanofiber exhibits much better electrochemical performance with a high reversible capacity of 1007 mAh/g at the 80th cycle and excellent rate capability. Also, Read more:batteries
Trend Report: Electrospinning 1st Part - An Emerging Process to Produce Nanofibers 2008-06-11 02:47:00 Can it really take over 100 years for a patented technique a useful nanotechnology process? Can we make tomorrow's commercial products today? Will it be possible to wear a "smart" piece of fabric that will protect us as we work to clean up an environmentally hazardous environment? The answer to all of these questions is "yes". The process we are referring to is called electrospinning (ES), w Read more:Process
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