Abstract
Electroosmotic pumps have been prepared using macroporous polymer monoliths with their pore surface grafted with the ionizable monomers 2-acrylamido-2-methyl-1-propanesulfonic acid and [2-(methacryloyloxy)ethyl] trimethyl ammonium chloride, respectively. The effects of critical parameters such as pore size of the monolith, percentage of ionizable moieties in the grafted layer, crosslinking density, and driving voltage on both flow rate and pressure have been quantified. Electroosmotic pumps fabricated from the grafted monoliths afforded pressures as high as 0.38MPa and electric-field-specific flow rates of up to 0.41ml/min, both at an applied potential of 50V.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 66-73 |
| Number of pages | 8 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 99 |
| Issue number | 1 |
| DOIs | |
| State | Published - Apr 15 2004 |
| Externally published | Yes |
Bibliographical note
Funding Information:This work was supported by grant from DARPA (F30602-00-1-0571), with Michael Krihak as program director. Additional support from the National Institute of General Medical Sciences, National Institutes of Health (GM-48364) and the Office of Nonproliferation Research and Engineering of the US Department of Energy under contract no. DE-AC03-76SF00098 is also gratefully acknowledged.
Keywords
- Electroosmotic pumps
- Monolith
- Polymer
- Porous
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Metals and Alloys
- Instrumentation
- Materials Chemistry
- Surfaces, Coatings and Films
- Electrical and Electronic Engineering