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Title: Processes for preparing carbon fibers using sulfur trioxide in a halogenated solvent

Disclosed here are processes for preparing carbonized polymers (preferably carbon fibers), comprising sulfonating a polymer with a sulfonating agent that comprises SO.sub.3 dissolved in a solvent to form a sulfonated polymer; treating the sulfonated polymer with a heated solvent, wherein the temperature of the solvent is at least C.; and carbonizing the resulting product by heating it to a temperature of C. Carbon fibers made according to these methods are also disclosed herein.
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Issue Date:
OSTI Identifier:
Dow Global Technologies LLC ORNL
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2013 Jul 03
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
Country of Publication:
United States

Works referenced in this record:

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