Looking for Nanosolutions?
Looking for Nanosolutions?
If the answer is yes, then this is the right spot. Electrospinning is an innovative technique that has shown up on the high-tech landscape to put an end to this search. From micro or nanofiber-based membranes and coatings to encapsulation of functional ingredients, including bio-materials, bioactives and natural extracts, all those are obtained thanks to this technology and to electrospraying.
In a short time, both processes have been developed meeting the highest standards in order to satisfy specific needs regarding nano-tech. Just keep on reading to find out more interesting information about why they have come to stay, maybe for more than a while.
What is electrospinning and electrospraying then?
In general terms, it is a technique for fibre-making, based on a series of electromagnetic phenomena like electrostatic charge, where a given polymer solution is influenced by this effect, resulting in nano-fibres with only a few nanometers in width.
As for electrospraying process, it is a high voltage-induced spraying technique, that radially disperses highly charged liquid droplets, due to Coulomb repulsion.
How did electrospray appear?
Digging up a bit of interesting historical facts in science, back in the 16th century, William Gilbert, observed that a drop of water shifts its form when in the presence of a charged piece of amber.
Later on, Jean-Antoine Nollet, was the first scientific to notice that water would aerosolize when flowing from an electrified vessel placed close to electrical ground. And he also observed that the blood flowing from a cut on the skin of a person, who happened to be electrified by being in contact to a high-voltage source, would spray on the area located close to the wound.
By 1882, Lord Rayleigh, discovered the maximum charge a drop of water can carry, giving birth to the currently known “Rayleigh limit”. In 1914, John Zeleny, presented evidence for some electrospray regimes and finally, from 1964 to 1969, Sir Geoffrey Ingram produced a model of the cone formed by the fluid drop while being influenced by an electric field, named today as the Taylor cone.
What about the electrospinning process?
Electrospinning has a similar history, starting with Gilbert’s studies, but this technique takes its own path when in 1902, J.F. Cooley patented an “Apparatus for electrically dispersing fibres”, it described the process used to produce fibres using electrospraying principles applied to a viscous substance mixed with a volatile solvent, the result of this was a solid material.
In 1903, Cooley patented what is actually known as “Cooley’s electrical method for fluids dispersion”. From then on, studies come from the same scientists until 1995, when J. Doshi and D.H. Reneker, found out the way to make nano-fibres when they were studying the technique.
Since 1995, many theoretical studies about the process of electrospinning have been developed. Reznick and his partners, presented an extensive research about the shape of Taylor’s cone and Hohnan did his part investigating the relative growth of the numerous instabilities produced in a forced electrical flow.
Electrospinning and electrospraying today
Thanks to all these people, today nanostructured products exist, and are available for a variety of applications such as, for example, filtering of fluids or biomaterials, i.e.: synthetic nano-materials that interact with living cells or living tissue to speed up healing processes.
This is why, when a necessity for the development of new products in the areas of pharmaceuticals, biomedicals, encapsulation of food-nutraceuticals and cosmetics arises, an electrospinning company, where a complete staff of scientists, engineers, project managers and manufacturing operators, work as one to deliver products and services to meet every need regarding areas where nanotechnology can be of good use with the highest standards, becomes one’s professional best friend.
If you are a scientist or entrepreneur, with an application of recent discovery in your mind, and you are in the quest for the right technology to bring it into reality, you might have reached the right place with this leading-edge technology.
So far, electrospinning technique is being used for:
- Medicine and rehabilitation
- High resistance materials
- Energy sources manufacturing
- New types of electronic devices
- Electrospray ionization
- Liquid metal ion source
- Colloid thrusters
- Deposition of particles for nanostructures
- Deposition of ions as precursors for nanoparticles and nanostructures
- Fabrication of drug carriers
- Air purifiers
But these are not necessarily the only possible ways to use them, as imagination is the limit and there are chances for many other unexpected applications for both techniques awaiting out there in the minds of people such as you.