| Drop production and tip-streaming phenomenon in a microfluidic flow-focusing device via an interfacial chemical reaction. | |
| | |
MedLine Citation:
|
PMID: 20334409 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Microfluidic flow-focusing technology is used to investigate the effect on drop formation due to the production of a surfactant via an interfacial chemical reaction. The reactants are an aqueous solution of sodium hydroxide (NaOH) and a mixture of oleic acid (C(17)H(33)-COOH) and mineral oil, for the dispersed and continuous phase fluids, respectively, at concentration < or = 5 mM. In the absence of a chemical reaction, the drop shapes remain constant from just after breakup into droplets down at the flow-focusing nozzle until the drops exit the channel. In the presence of the chemical reaction, there is modification of the shape depending on the concentration of reactants. The drop speeds, O(10) mm/s, lengths, O(1-100) microm, and relative displacements, O(100-1000) microm, are measured for a variety of flow conditions with observable trends that correlate with the reaction rate, which we rationalize by using the Damkohler number to characterize drop production and transport in these types of flows. |
| | |
Authors:
|
Thomas Ward; Magalie Faivre; Howard A Stone |
Related Documents
:
|
8466129 - Pulmonary hypertensive response to rabbit blood components in goats: role of thromboxane. 10971209 - Alphaalpha-crosslinked hemoglobin: was failure predicted by preclinical testing? 8234519 - An electronic device for surgical glove testing. 8751299 - Haemoglobin-based red cell substitutes: current status. 15043589 - Evaluation of the future supply and demand for blood products in the united kingdom nat... 15737719 - Weee recycling: pyrolysis of fire retardant model polymers. 22260199 - Venous flow dynamics during spinal block in normotensive and hypertensive elderly patie... 6807879 - Blood components for oral surgery. 2285669 - The pathophysiology of the anophthalmic socket. part i. analysis of orbital blood flow. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Langmuir : the ACS journal of surfaces and colloids Volume: 26 ISSN: 1520-5827 ISO Abbreviation: Langmuir Publication Date: 2010 Jun |
Date Detail:
|
Created Date: 2010-06-10 Completed Date: 2010-08-31 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9882736 Medline TA: Langmuir Country: United States |
Other Details:
|
Languages: eng Pagination: 9233-9 Citation Subset: IM |
Affiliation:
|
Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina 27695-7910, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Kinetics Microfluidics / methods* Oleic Acid / chemistry* Sodium Hydroxide / chemistry* Solutions Surface-Active Agents / chemistry* |
| Chemical | |
Reg. No./Substance:
|
0/Solutions; 0/Surface-Active Agents; 112-80-1/Oleic Acid; 1310-73-2/Sodium Hydroxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Surface Adsorption and Phase Separation of Oppositely Charged Polyion-Surfactant Ion Complexes: 3. E...
Next Document: Investigating the Effect of pH on the Aggregation of Two Surfactant-Like Octapeptides.