On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method
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 parti...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
2004
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| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/7480 |
| _version_ | 1826207758357102592 |
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| author | Kuang, Lim Liang Wang, Chi-Hwa Smith, Kenneth A. |
| author_facet | Kuang, Lim Liang Wang, Chi-Hwa Smith, Kenneth A. |
| author_sort | Kuang, Lim Liang |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T13:54:30Z |
| format | Article |
| id | mit-1721.1/7480 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:54:30Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | mit-1721.1/74802019-04-12T08:40:29Z On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method Kuang, Lim Liang Wang, Chi-Hwa Smith, Kenneth A. Electrohydrodynamic Atomization Polymeric Particles Single Taylor Cone Single Jet Size Control 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. Singapore-MIT Alliance (SMA) 2004-12-15T20:15:10Z 2004-12-15T20:15:10Z 2005-01 Article http://hdl.handle.net/1721.1/7480 en Molecular Engineering of Biological and Chemical Systems (MEBCS); 865430 bytes application/pdf application/pdf |
| spellingShingle | Electrohydrodynamic Atomization Polymeric Particles Single Taylor Cone Single Jet Size Control Kuang, Lim Liang Wang, Chi-Hwa Smith, Kenneth A. On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method |
| title | On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method |
| title_full | On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method |
| title_fullStr | On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method |
| title_full_unstemmed | On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method |
| title_short | On the Fabrication of Microparticles Using Electrohydrodynamic Atomization Method |
| title_sort | on the fabrication of microparticles using electrohydrodynamic atomization method |
| topic | Electrohydrodynamic Atomization Polymeric Particles Single Taylor Cone Single Jet Size Control |
| url | http://hdl.handle.net/1721.1/7480 |
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