Monodisperse microparticle generation from aqueous solutions

Author

Tropmann, A. ; Lass, N. ; Paust, N. ; Ziegler, C. ; Zengerle, R. ; Koltay, P.

Author_Institution

Lab. for MEMS Applic., Univ. of Freiburg, Freiburg, Germany

fYear

2011

fDate

5-9 June 2011

Firstpage

1460

Lastpage

1463

Abstract

We present a new approach for the generation of monodispersed droplets and tailor-made microparticles of complex liquids from a star-shaped nozzle that precisely defines the dispensed droplet sizes. From two aqueous polymer solutions: 30w% Polyvinylpyrrolidone (PVP) (viscosity η ≈ 105 mPas) and 40w% PVP (η ≈ 490 mPas) droplet volumes of 3.9 nl and 3.2 nl respectively were generated employing a star-shaped silicon nozzle with a diameter of 183 μm. From 1w% Mannitol (η ≈ 1 mPas) droplets (100 pl) and particles (22 μm) were generated from a 59 μm nozzle. These results show for the first time particle generation with the StarJet method that could be applicable for the generation of monodispersed powders for use in healthcare, food and home care products.

Keywords

disperse systems; drops; elemental semiconductors; nozzles; polymer solutions; powders; silicon; PVP; Si; aqueous polymer solution; aqueous solution; dispensed droplet size; food product; healthcare product; home care product; monodisperse microparticle generation; monodispersed droplet; monodispersed powder; polyvinylpyrrolidone; size 183 mum; size 22 mum; size 59 mum; star-shaped silicon nozzle; starjet method; tailor-made microparticle; Electron tubes; Liquids; Metals; Pharmaceuticals; Powders; Reservoirs; Silicon; Mannitol; Polyvinylpyrrolidone; Spray; StarJet; microparticles; monodisperse;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International

Conference_Location

Beijing

ISSN

Pending

Print_ISBN

978-1-4577-0157-3

Type

conf

DOI

10.1109/TRANSDUCERS.2011.5969626

Filename

5969626