نتایج جستجو برای: electrospinning process microgels

تعداد نتایج: 1316296  

2012
Chitral Angammana Shesha Jayaram

Electrospinning is a simple and inexpensive process that produces continuous nanofibres from the submicron diameter scale down to the nanometer diameter scale through an electrically charged jet of polymer solution. Previously, most of the electrospinning experiments have been carried out using single-needle arrangements. However, the low fluid throughput in needle spinning has limited the indu...

Journal: :journal of nanostructures 2012
a. akbari a. yunessnia lehi m. bojaran

poly(vinylidene fluoride) (pvdf) nanofibers were prepared via electrospinning process. several different factors influence on this process and application of experimental design for its optimization is of great importance. the central composite design (ccd) was used for planning and optimizing of the experiments and also, the analysis of variance (anova) was employed for the statistical validat...

Journal: :Nanotechnology 2011
N M Thoppey J R Bochinski L I Clarke R E Gorga

A novel, simple geometry for high throughput electrospinning from a bowl edge is presented that utilizes a vessel filled with a polymer solution and a concentric cylindrical collector. Successful fiber formation is presented for two different polymer systems with differing solution viscosity and solvent volatility. The process of jet initiation, resultant fiber morphology and fiber production r...

Journal: :Biomacromolecules 2006
Gunaranjan Viswanathan Saravanababu Murugesan Victor Pushparaj Omkaram Nalamasu Pulickel M Ajayan Robert J Linhardt

Electrospinning is a versatile process used to prepare micro- and nano- sized fibers from various polymers dissolved in volatile solvents. In this report, cellulose and cellulose-heparin composite fibers are prepared from nonvolatile room temperature ionic liquid (RTIL) solvents by electrospinning. RTILs are extracted from the biopolymer fiber after the fiber formation using a cosolvent. Micron...

Journal: :Macromolecular bioscience 2010
Harini G Sundararaghavan Robert B Metter Jason A Burdick

The structural and mechanical properties of tissue engineered environments are crucial for successful cellular growth and tissue repair. Electrospinning is gaining wide attention for the fabrication of tissue engineered scaffolds, but the small pore sizes of these scaffolds limit cell infiltration and construct vascularization. To address this problem, we have combined electrospinning with phot...

Journal: :Science and technology of advanced materials 2011
Wee-Eong Teo Ryuji Inai Seeram Ramakrishna

Progress in the electrospinning techniques has brought new methods for the production and construction of various nanofibrous assemblies. The parameters affecting electrospinning include electrical charges on the emerging jet, charge density and removal, as well as effects of external perturbations. The solvent and the method of fiber collection also affect the construction of the final nanofib...

Journal: :Bio-medical materials and engineering 2014
Chenhui Zhu Xiaoxuan Ma Li Xian Yang Zhou Daidi Fan

Novel scaffolds for vascular tissue engineering were fabricated by co-electrospinning human-like collagen/chitosan and polylactic acid at room temperature and normal pressure. By studying the effects of composition and collecting distance on the morphology of electrospun meshes, we determined that the proper collecting distance and the concentration of the solution are the keys to the success o...

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