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| Type |
Symposium |
| Area |
New Frontiers in Electrochemistry: Fundamentals and Applications |
| Room No. |
Room 407+408 |
| Time |
THU 17:10-17:40 |
| Code |
ELEC1-4 |
| Subject |
Fundamental Understanding of Electroosmosis Is a Key for Developing Drug Delivery Pump |
| Authors |
Woonsup Shin*, Junyeong Kang1
Department of Chemistry / Department of Fusion Bio, Sogang University, Korea
1Department of Chemistry, Sogang University, Korea
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| Abstract |
Electrochemistry is known to be a key transducing technology between chemical energy and electrical energy. Electroosmosis is a phenomenon which the fluid moves upon applying electric field through capillary or porous ceramic membrane. This is a rare example where electrochemistry is utilized for a mechanical transducer. Electroosmotic pumps are the simplest one, consisting of two electrodes separated by a porous membrane, but its practical use has been hindered by the use of platinum electrode. On platinum the pumped solution keeps being electrolyzed to produce O2 from anode and H2 from the cathode and the bubbles are easily trapped in the membrane to make the flow irregular. Even the co-production of O2 and H2 makes the system unsafe in the closed loop. The use of electrochemical reaction such as Ag/Ag2O could substitute the reactions on the platinum electrode to operate the pump non-gassing with higher efficiency. It also enabled the pump battery-operable. The pump is now currently being used to develop drug pumps such as insulin patch pump and implantable morphine pump. |
| E-mail |
shinws@sogang.ac.kr |
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123rd General Meeting of the KCS