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Title: Processes for preparing carbon fibers using gaseous sulfur trioxide

Disclosed herein are processes for preparing carbonized polymers, such as carbon fibers, comprising: sulfonating a polymer with a sulfonating agent that comprises SO.sub.3 gas to form a sulfonated polymer; treating the sulfonated polymer with a heated solvent, wherein the temperature of said solvent is at least 95.degree. C.; and carbonizing the resulting product by heating it to a temperature of 500-3000.degree. C.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1234691
Assignee:
Dow Global Technologies LLC (Midland, MI) ORNL
Patent Number(s):
9,228,276
Application Number:
14/413,457
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

Other works cited in this record:

Amorphous carbon fibres from linear low density polyethylene
journal, October 1990
  • Postema, A. R.; De Groot, H.; Pennings, A. J.
  • Journal of Materials Science, Vol. 25, Issue 10, p. 4216-4222
  • DOI: 10.1007/BF00581075

The effect of diameter on the mechanical properties of amorphous carbon fibres from linear low density polyethylene
journal, March 1991
  • Penning, J. P.; Lagcher, R.; Pennings, A. J.
  • Polymer Bulletin, Vol. 25, Issue 3, p. 405-412
  • DOI: 10.1007/BF00316913

Carbon Fibers from Polyethylene-Based Precursors
journal, March 1994
  • Zhang, Dong; Bhat, Gajanan S.
  • Materials and Manufacturing Processes, Vol. 9, Issue 2, p. 221-235
  • DOI: 10.1080/10426919408934900

Use of sulfonation procedure for the development of thermally stabilized isotactic polypropylene fibers prior to carbonization
journal, July 2011
  • Karacan, Ismail; Benli, Huseyin
  • Journal of Applied Polymer Science, Vol. 123, Issue 1, p. 234-245
  • DOI: 10.1002/app.34454

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