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Investigations of electret as a contamination control deviceThermoelectrets of polymers with stable surface charge on either side have been found to attract ions and charged particles to their surfaces. To assess their applicability to the control of atmospheric contamination, polytetraethylene (teflon) electrets are exposed to vapors coming from volatile mixtures over periods up to 90 min. Use is made of mass spectrometry for the analysis of teflon electret characteristics. It is found that even small quantities of the liquids in the mixture gives its characteristic mass spectra and that the peak height represents a measure for the quantity of the material collected over the electret surface, with the collected quantity being proportional to the duration of exposure.
Document ID
19750043188
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Pillai, P. K. C.
Su, C. S.
Shriver, E. L.
(NASA Marshall Space Flight Center Space Sciences Laboratory, Huntsville, Ala., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1974
Publication Information
Publication: Environmental Letters
Volume: 7
Issue: 3, 19
Subject Category
Instrumentation And Photography
Accession Number
75A27260
Distribution Limits
Public
Copyright
Other

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