نتایج جستجو برای: mesh electrospinning
تعداد نتایج: 48005 فیلتر نتایج به سال:
Although electrospinning is considered a powerful and generic tool for the preparation of nanofiber webs, several issues still need to be overcome for real-world applications. Most of these issues stem from the use of a syringe-based system, where the key factor influencing successful electrospinning is the maintenance of several subtle balances such as those of between the mass and the electri...
Electrospinning is applied to create continuous fibers with nanometer diameters through jetting polymer solutions in high electric fields. A drawback of this method, however, is the unstable behavior of the liquid jet, which causes the fibers to be collected randomly. So a critical concern in this process is to achieve desirable control. Studying the dynamics of the electrospinning jet will be ...
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...
We report on a continuous method for controlled electrospinning of polymeric nanofibers on two-dimensional (2D) and three dimensional (3D) substrates using low voltage near-field electrospinning (LV NFES). The method overcomes some of the drawbacks in more conventional near-field electrospinning by using a superelastic polymer ink formulation. The viscoelastic nature of our polymer ink enables ...
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...
BACKGROUND Polypropylene mesh used as a mid-urethral sling is associated with severe clinical complications in a significant minority of patients. Current in vitro mechanical testing shows that polypropylene responds inadequately to mechanical distension and is also poor at supporting cell proliferation. AIMS AND OBJECTIVES Our objective therefore is to produce materials with more appropriate...
The fabrication process of ceramic yttria-stabilized zirconia (YSZ) and nickel oxide nanofibers by electrospinning is reported. The preparation of hollow YSZ nanofibers and aligned nanofiber arrays is also demonstrated. The influence of the process parameters of the electrospinning process, the physicochemical properties of the spinning solutions, and the thermal treatment procedure on spinnabi...
By means of the electrospinning technique, micronand nanofibers can be obtained from polymer solutions under a very high electrical field. A special challenge is to produce bead-free uniform fibers since any minor changes in the electrospinning parameters such as slight variations in the polymer solutions and/or electrospinning experimental parameters may result in significant variations in the...
Electrospinning technique is currently one of the most important methods for preparing nanofiber. It is important and essential to analyze the distribution of electric field in electrospinning machine. The electric field’s distribution in the typical electrospinning device was calculated and analyzed based on finite element calculation theory of electric field. The electric field is optimized b...
Electrospinning is a unique way to producing novel polymer nano fibres with diameter typically in the range from 10 nm to 1500nm. Large length to diameter ratio and small mass to volume ratio of these nanosizes fibres widens the areas of their application to many industrial uses. Nylon 6 nanofibres with diameter ranging from 150nm to 1300 nm were produced by the electrospinning process. The fib...
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