Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 15, 2018
Previous Article Next Article

Microfluidic nozzle device for ultrafine fiber solution blow spinning with precise diameter control

Author affiliations

Abstract

We present a microfluidic nozzle device for the controlled continuous solution blow spinning of ultrafine fibers. The device is fabricated by soft lithography techniques and is based on the principle of a gas dynamic virtual nozzle for precise three-dimensional gas focusing of the spinning solution. Uniform fibers with virtually endless length can be produced in a continuous process while having accurate control over the fiber diameter. The nozzle device is used to produce ultrafine fibers of perfluorinated copolymers and of polycaprolactone, which are collected and drawn on a rotating cylinder. Hydrodynamics and mass balance quantitatively predict the fiber diameter, which is only a function of flow rate and air pressure, with a small correction accounting for viscous dissipation during jet formation, which slightly reduces the jet velocity. Because of the simplicity of the setup, the precise control of the fiber diameter, the positional stability of the exiting ultrafine fiber and the potential to implement arrays of parallel channels for high throughput, this methodology offers significant benefits compared to existing solution-based fiber production methods.

Graphical abstract: Microfluidic nozzle device for ultrafine fiber solution blow spinning with precise diameter control

Back to tab navigation

Supplementary files

Article information


Submitted
24 Mar 2018
Accepted
31 May 2018
First published
05 Jun 2018

Lab Chip, 2018,18, 2225-2234
Article type
Paper

Microfluidic nozzle device for ultrafine fiber solution blow spinning with precise diameter control

E. Hofmann, K. Krüger, C. Haynl, T. Scheibel, M. Trebbin and S. Förster, Lab Chip, 2018, 18, 2225
DOI: 10.1039/C8LC00304A

Social activity

Search articles by author

Spotlight

Advertisements