Improving Filtration Performance with Nanospider Electrospun Nanofibers

Topics Covered

Key Features of Nanospider Electrospun Nanofibers
Key Benefits of Nanospider Electrospun Nanofibers
Key Characteristics of Nanospider Electrospun Nanofibers


The addition of thin coatings of Nanospider electrospun nanofibers to conventional filtration substrates can improve the filtration performance by several folds. Nanospider electrospinning from Elmarco is the only commercially available technique that is capable of fabricating submicron fibers with discrete diameter size increments and narrow fiber diameter distribution.

Key Features of Nanospider Electrospun Nanofibers

Nanospider electrospinning facilitates optimized filtration behavior that is characteristic to nanofiber architecture. Nanofiber filtration medium not only delivers comparable, but often superior performance, when compared to the expensive commercial filtration medium. It has outstanding value proposition with the combination of low-cost substrate and thin nanofiber coating that delivers better filtration performance at a lower cost.

Key Benefits of Nanospider Electrospun Nanofibers

Submicron fibers considerably optimize air filtration efficiency of filters and media. The submicron fiber range delivers superior filter efficiency in the interception and inertial impaction regions. A wide choice of design aspects help media design experts to improve the interaction between flow, filter life and efficiency.

The filtration benefits of Nanospider electrospun nanofiber webs are the results of a unique combination of features that distinguish them from all other filter media technology. Nanospider is capable of depositing a monolayer of continuous fibers, thereby yielding highly porous webs of very light weight, finished materials.

Key Characteristics of Nanospider Electrospun Nanofibers

The following are the key characteristics of nanofiber webs created by Nanospider that play a crucial role in the improvement of the filtration performance of the media into which they are integrated:

Submicron fiber diameter - Tunable average fiber diameters between 0.075μm and 0.250μm, in 0.025μm increments (larger fiber diameters also available)

Large surface area and high porosity – High porosity of 60-90% (low solidity) with a pore size range of 0.1-3μm, surface area of 10-100m2/g, and relatively narrow pore size distribution

Efficiency and air flow optimization – Can be integrated with a wide choice of substrates, enabling high flow composite media with superior filtration efficiency

Wide material selection – A wide choice of known polymer materials and their blends and the ability to add additives to the fibers

Figure 1 shows representative fractional filtration efficiency curves for Elmarco Nanospider nanofiber coated filtration media.

Figure 1. Representative Fractional Filtration Efficiency Curve for Elmarco Nanospider Nanofiber Coated Filtration Media


Elmarco is the industry's first supplier of industrial scale nanofiber production equipment. Partnerships with global industrial leaders and universities form the foundation for success of the company. Elmarco's unique Nanospider™ technology is designed for ease of use, scalability, modularity and flexibility in producing the highest quality nanofibers.

Nanospider™ technology is a patented, needle-free high voltage, free liquid surface electrospinning process. The technology is based upon the discovery, that it is possible to create Taylor Cones and the subsequent flow of material not only from the tip of a capillary, but also from a thin film of a polymer solution.

The technology enabled Elmarco to build industrial scale production equipment with out nozzles, needles or spinnerets.

Nanospider™ technology allows the production of nanofibers from polymers solved in water, acids or bipolar solvents as well as from melted polymers and is suitable for the production of organic and inorganic fibers. This versatile technology is easily adapted to a variety of process parameters for the optimization of the specific properties of the produced nanofibers.

This information has been sourced, reviewed and adapted from materials provided by ELMARCO.

For more information on this source, please visit ELMARCO.

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