NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Cell separations and the demixing of aqueous two phase polymer solutions in microgravityPartition in phase separated aqueous polymer solutions is a cell separation procedure thought to be adversely influenced by gravity. In preparation for performing cell partitioning experiments in space, and to provide general information concerning the demixing of immiscible liquids in low gravity, a series of phase separated aqueous polymer solutions have been flown on two shuttle flights. Fluorocarbon oil and water emulsions were also flown on the second flight. The aqueous polymer emulsions, which in one g demix largely by sedimentation and convection due to the density differences between the phases, demixed more slowly than on the ground and the final disposition of the phases was determined by the wetting of the container wall by the phases. The demixing behavior and kinetics were influenced by the phase volume ratio, physical properties of the systems and chamber wall interaction. The average domain size increased linearly with time as the systems demixed.
Document ID
19920030261
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brooks, Donald E.
(British Columbia, University Vancouver, Canada)
Bamberger, Stephan
(British Columbia Univ. Vancouver British Columbia, Canada)
Harris, J. M.
(British Columbia Univ. Vancouver British Columbia, Canada)
Van Alstine, James M.
(Alabama, University Huntsville, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Materials Processing
Meeting Information
Meeting: AIAA/IKI Microgravity Science Symposium
Location: Moscow
Country: USSR
Start Date: May 13, 1991
End Date: May 17, 1991
Accession Number
92A12885
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available