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On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method

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Show simple item record Kuang, Lim Liang Wang, Chi-Hwa Smith, Kenneth A. 2004-12-15T20:15:10Z 2004-12-15T20:15:10Z 2005-01
dc.description.abstract A new approach for the control of the size of particles fabricated using the Electrohydrodynamic Atomization (EHDA) method is being developed. In short, the EHDA process produces solution droplets in a controlled manner, and as the solvent evaporates from the surface of the droplets, polymeric particles are formed. By varying the voltage applied, the size of the droplets can be changed, and consequently, the size of the particles can also be controlled. By using both a nozzle electrode and a ring electrode placed axisymmetrically and slightly above the nozzle electrode, we are able to produce a Single Taylor Cone Single Jet for a wide range of voltages, contrary to just using a single nozzle electrode where the range of permissible voltage for the creation of the Single Taylor Cone Single Jet is usually very small. Phase Doppler Particle Analyzer (PDPA) test results have shown that the droplet size increases with increasing voltage applied. This trend is predicted by the electrohydrodynamic theory of the Single Taylor Cone Single Jet based on a perfect dielectric fluid model. Particles fabricated using different voltages do not show much change in the particles size, and this may be attributed to the solvent evaporation process. Nevertheless, these preliminary results do show that this method has the potential of providing us with a way of fine controlling the particles size using relatively simple method with trends predictable by existing theories. en
dc.description.sponsorship Singapore-MIT Alliance (SMA) en
dc.format.extent 865430 bytes
dc.format.mimetype application/pdf
dc.language.iso en
dc.relation.ispartofseries Molecular Engineering of Biological and Chemical Systems (MEBCS);
dc.subject Electrohydrodynamic Atomization en
dc.subject Polymeric Particles en
dc.subject Single Taylor Cone Single Jet en
dc.subject Size Control en
dc.title On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method en
dc.type Article en

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