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Electrokinetic properties of polymer colloidsThe surface of polymer colloids, especially polystyrene latexes, were modified for the purpose of controlling the electrokinetic properties of the resulting colloids. Achievement required a knowledge of electrical double layer charging mechanism, as a function of the electrolyte conditions, at the polymer/water interface. The experimental approach is to control the recipe formulation in the emulsion polymerization process so as to systematically vary the strong acid group concentration on the surface of the polymer particles. The electrophoretic mobility of these model particles will then be measured as a function of surface group concentration and as a function of electrolyte concentration and type. An effort was also made to evaluate the electrophoretic mobility of polystyrene latexes made in space and to compare the results with latexes made on the ground.
Document ID
19870003248
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Micale, F. J. (Lehigh Univ. Bethlehem, PA, United States)
Fuenmayor, D. Y. (Lehigh Univ. Bethlehem, PA, United States)
Date Acquired
September 5, 2013
Publication Date
March 1, 1986
Subject Category
Nonmetallic Materials
Report/Patent Number
NAS 1.26:178938
NASA-CR-178938
Accession Number
87N12681
Funding Number(s)
CONTRACT_GRANT: NAS8-35989
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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