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polymer coatings reduce electro-osmosisPoly(ethylene glycol) film controls electrostatic potential. Electro-osmosis in quartz or glass chambers reduced or reversed by coating inside surface of chambers with monomacromolecular layers of poly(ethylene glycol). Stable over long times. Electrostatic potential across surface of untreated glass or plastic chamber used in electro-phoresis is negative and attracts cations in aqueous electrolyte. Cations solvated, entrains flow of electrolyte migrating toward cathode. Electro-osmotic flow interferes with desired electrophoresis of particles suspended in electrolyte. Polymer coats nontoxic, transparent, and neutral, advantageous for use in electrophoresis.
Document ID
19890000069
Document Type
Other - NASA Tech Brief
Authors
Herren, Blair J.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Snyder, Robert
(NASA Marshall Space Flight Center, Huntsville, AL.)
Shafer, Steven G.
(University of Alabama)
Harris, J. Milton
(University of Alabama)
Van Alstine, James M.
(Universities Space Research Association)
Date Acquired
August 13, 2013
Publication Date
February 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 2
ISSN: 0145-319X
Subject Category
MATERIALS
Report/Patent Number
MFS-26050
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.