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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.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1234691
Report Number(s):
9,228,276
14/413,457
DOE Contract Number:
NFE-10-02991
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Jul 03
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE