Bubble Electrospinning Research Articles

The Smaller, the Better: From the Spider-Spinning to Bubble-Electrospinning

Nanobubble dynamics in the spider-spinning procedure is elucidated, and a theoretical model is established to show why spider drag-line silk protein assemblies have extraordinary strength and toughness. Suggested by the spider-spinning, a bubble electrospinning is investigated for mass production of nanofibers within diameters 20 nm. El Naschie’s E-infinity theory is a universal theory for nanotechnology. It is concluded that smaller is the way to have excellent thermal and electric conductivity, in fact the smaller, the better.

Bubble electrospinning method for preparation of aligned nanofibre mat

In the present work, the authors suggest two methods using the bubble electrospinning to fabricate the aligned nanofibres by changing the collector electrode from a traditional metal plate into a single thin cylindrical metal electrode or two thin cylindrical metal electrodes respectively to collect the produced nanofibres. In the both cases, the aligned nanofibres are fabricated successfully.

Apparatus for preparing electrospun nanofibres: a comparative review

A brief introduction to the development of electrospinning is given, and various apparatus to fabricate nanofibres or nanoporous materials are systematically reviewed with emphasis on the vibration electrospinning and melt electrospinning for enlarging electrospinability, siro-electrospinning for mimicking the spinning procedure of a spider, magneto-electrospinning for controlling the instability arising in the electrospinning process and bubble electrospinning for mass production of nanofibres. Electrospinning for producing nanoporous materials and the nano-effect for improving the properties of nanofibres are also introduced.

Effect of solution concentration on diameter and morphology of PVA nanofibres in bubble electrospinning process

Bubble elecrospinning is an excellent and novelty method to fabricate nanofibres with high throughout. This paper investigates experimentally the effects of solution concentration and its viscosity on diameter and morphology of bubble electrospun polyvinyl alcohol (PVA) nanofibres, where pure water is used as a solvent for environmental consideration. The experiment shows that the as spun fibres change their morphology from few beads, smooth surfaces and finally to larger diameter fibres when PVA solution concentration increases gradually. An allometric relation between the fibre diameter and the solution concentration is obtained. The minimal diameter is as small as 38·3 nm.

Effect of applied voltage on diameter and morphology of ultrafine fibers in bubble electrospinning

AbstractA novel electrospinning process, bubble electrospinning, was used to produce porous nonwoven fibrous mats, of which the fiber diameter can range from nano‐ to microscales. The deformation of a charged bubble, from which multiple jets were ejected, was observed using a high‐speed motion camera. The effects of different applied voltages on diameter, morphology, and structure of bubble‐electrospun ultrafine fibers were theoretically analyzed and then experimentally validated by scanning electron microscopy and atomic force microscopy. The results showed that the average diameter of fibers increased with the increase of the applied voltage in bubble electrospinning, which is quite different from that in traditional electrospinning process under the similar conditions. The number of beaded fibers decreased with increasing applied voltage. Additionally, the crystallinities of polyvinylpyrrolidone ultrafine fibers obtained in this process were higher than that of polyvinylpyrrolidone powders. The production rate of bubble electrospinning was higher than that of the traditional electrospinning. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

Allometric Scaling Relationship between Solution Concentration and Nanofiber Diameter in Bubble Electrospinning and its Experimental Verification

An allometrical scaling relationship between the solution concentration and the nanofiber diameter in bubble electrospinning was established. The scaling law was validated with experimental results using bubble-electrospun Polyvinylpyrrolidone (PVP) nanofibers at different concentration PVP solutions. The results showed that the average diameter of PVP nanofibers increased approximately exponentially with solution concentration in bubble electrospinning process. The experimental data agreed well with the theoretical predictions, and showed that the present model had high prediction accuracy.

Using Orthogonal Design in Optimizing Parameters for Bubble Electrospinning of Polyvinyl Alcohol (PVA) Nanofibers

The present work was aimed at studying the effects of process parameters on morphologies of Polyvinyl alcohol (PVA) nanofibers in a novel electrospinning technique, bubble electrospinning. The process was optimized by constructing L 9(34) orthogonal experimental array design. Three factors were investigated and nine tests were run under lower, medium and higher levels of these factors. The results showed that PVA solution concentration plays an important role in affecting the morphologies of PVA nanofibers in bubble electrospinning process. With the increase of the concentration of PVA solution, the morphologies of fibers were changed from beaded fibers to uniform cylinder fibers and the average nanofiber diameter also increased. The optimization process was 12w% for PVA solution, 30kV for applied voltage and 10cm for spinning distance.

Mathematical Model of Electric Field Distribution at a Critical State in Bubble Electrospinning

Bubble electrospinning is a novel method to produce ultrafine nanofibers. In this work, a mathematical model of the electric field distribution in a critical state was established for bubble electrospinning process and was numerically simulated using finite element method. The results indicated that the maximum electric force occurred at the tip of the bubble, it is probably for this reason that the first jet occurs at the tip of the bubble, when the electrical force exceeds the surface tension, which also possibly induces bubble bursting.

Theoretical Analysis and Experimental Verification of the Effect of Surface Tension on Morphology of Nanofibers in Bubble Electrospinning

Theoretical Analysis and Experimental Verification of the Effect of Surface Tension on Morphology of Nanofibers in Bubble Electrospinning

APPLICATION OF SIROFIL TECHNOLOGY TO ELECTROSPINNING

A new direction in Sirospinning is nano-sirospinning, i.e., composition of a micro-composite yarn from thousands of nano fibers, just like that in spider-spinning, to improve the bulk of the parent nanofibers, the obtained yarn is predicted to be of excellent texturing with desirable properties. Bubble electrospinning is be used for this purpose.