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A micrographic and gravimetric study of intercalation and deintercalation of graphite fibersIntercalation and deintercalation of Union Carbide P-100 graphite fibers with liquid and vaporous bromine was studied gravimetrically and microscopically. The mass of the bromine intercalated fibers was found to be 17 to 20 percent greater than their pristine counterpart. This variation decreased to 17 to 18 percent after heating in air for 3 days at 200 C and to 14.5 to 18 percent after 6 days of 260 C heating. The fiber length did not change throughout the experiment. The fiber diameter increased during intercalation and decreased slightly upon deintercalation but was not affected by heating to 260 C for 3 days in air. Comparing the mass and volume data to those with highly oriented pyrolitic graphite or natural single crystal graphite suggested the possibility that the intercalated P-100 fibers could be mostly stage 4.
Document ID
19850019798
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hung, C. C. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1985
Subject Category
Nonmetallic Materials
Report/Patent Number
E-2582
NAS 1.15:87026
NASA-TM-87026
Meeting Information
Meeting: Biennial Conf. on Carbon
Location: Lexington, KY
Country: United States
Start Date: June 16, 1985
End Date: June 21, 1985
Sponsors: American Carbon Society
Accession Number
85N28110
Funding Number(s)
PROJECT: RTOP 506-55-72
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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