Electrospinning: A whipping fluid jet generates submicron polymer fibers

Autor:	Michael Brenner, Y. M. Shin, M. M. Hohman, Gregory C. Rutledge
Rok vydání:	2001
Předmět:	chemistry.chemical_classification Jet (fluid) Range (particle radiation) Materials science Physics and Astronomy (miscellaneous) Rotational symmetry Mechanics Polymer Instability Electrospinning Physics::Fluid Dynamics symbols.namesake chemistry Electric field symbols Rayleigh scattering
Zdroj:	Applied Physics Letters. 78:1149-1151
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.1345798
Popis:	Polymeric fibers with diameters in the range from 50 nm to 5 μm are produced by accelerating a fluid jet in an electric field, in a process known as “electrospinning.” Here we show that an essential element of the process is a fluid instability, the rapidly whipping jet. The phenomena responsible for the onset of whipping are revealed by a linear instability analysis that describes the jet behavior in terms of known fluid properties and operating conditions. The behavior of two competing instabilities, the Rayleigh mode and the axisymmetric conducting mode, is also described. The results are summarized using operating diagrams, delineating regimes of operation in electrospinning, which are in good agreement with experimental observations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eb60a9353a59977305a97b4aa31ba2af https://doi.org/10.1063/1.1345798 Zobrazit plný text záznamu