Continuing Innovation in electrospinning: New electrode design for improved uniformity and flexibility

J. Manasco*, Elmarco, Inc., USA; RR. Krenek, I. Ponomarev, Elmarco, s.r.o., Czech Republic

Nanofibers are almost exclusively used as part of a layered composite media. The most logical and cost-effective way to incorporate nanofibers into a composite is to deposit them on a functional layer. The electrospinning process is known to be hampered by highly resistive substrates (i.e. synthetics). This limitation can necessitate the use of a sacrificial “spinning” layer where, in an added step, the nanofiber membrane will have to be peeled from the spinning layer prior to building the final composite. In some extreme cases electrospinning can’t even be used in applications due to these constraints.

Elmarco has found a solution to this issue through an innovation in our collecting electrode design. This new design eliminates the barrier normally formed by a highly resistive substrate. Consequently, this new design eliminates the copying effect of the of substrate non-uniformity, designs, and defects often seen in nanofiber layers that have been electrospun. This results in an improvement in the microscale uniformity that reflects in higher performance. Furthermore, since the nanofibers are being deposited without bias, there is an opportunity for more relaxed fibers to be formed which can prevent shrinkage.

This innovation will allow our customers to have more flexibility in their composite design while providing an opportunity for higher performance and lower costs...

Session: F8 - Filter Media - Novel Nanofiber Development II
Day: 15 March 2018
Time: 13:00 - 14:15 h

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