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Title: Two-step sulfonation process for the conversion of polymer fibers to carbon fibers

Disclosed herein are processes for preparing carbon fibers, comprising: sulfonating a polymer fiber with a sulfonating agent that is fuming sulfuric acid, sulfuric acid, chlorosulfonic acid, or a combination thereof; treating the sulfonated polymer with a heated solvent, wherein the temperature of the heated solvent is at least 95.degree. C.; and carbonizing the resulting product by heating it to a temperature of 501-3000.degree. C. Carbon fibers prepared according to these methods are also disclosed herein.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1408915
Assignee:
Dow Global Technologies LLC (Midland, MI) ORNL
Patent Number(s):
9,816,207
Application Number:
14/413,454
Contract Number:
NFE-10-02991
Resource Relation:
Patent File Date: 2013 Jul 03
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Works referenced in this record:

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The effect of diameter on the mechanical properties of amorphous carbon fibres from linear low density polyethylene
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Carbon Fibers from Polyethylene-Based Precursors
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  • Zhang, Dong; Bhat, Gajanan S.
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Use of sulfonation procedure for the development of thermally stabilized isotactic polypropylene fibers prior to carbonization
journal, July 2011
  • Karacan, Ismail; Benli, Huseyin
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