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Title: Treatment of Lignin Precursors to Improve their Suitability for Carbon Fibers: A Literature Review

Lignin has been investigated as a carbon fiber precursor since the 1960s. Although there have been a number of reports of successful lignin-based carbon fiber production at the lab scale, lignin-based carbon fibers are not currently commercially available. This review will highlight some of the known challenges, and also the reported methods for purifying and modifying lignin to improve it as a precursor. Lignin can come from different sources (e.g. hardwood, softwood, grasses) and extraction methods (e.g. organosolv, kraft), meaning that lignin can be found with a diversity of purity and structure. The implication of these conditions on lignin as carbon fiber precursor is not comprehensively known, especially as the lignin landscape is evolving. The work presented in this review will help guide the direction of a project between GrafTech and ORNL to develop lignin carbon fiber technology, as part of a cooperative agreement with the DOE Advanced Manufacturing Office.
 [1] ;  [2] ;  [2] ;  [1] ;  [1]
  1. GrafTech International Holdings Inc.
  2. Oak Ridge National Laboratory
Publication Date:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
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Resource Relation:
Conference: CARBON FIBERS AND THEIR COMPOSITES AND APPLICATIONS, An American Carbon Society Workshop, April 16-17, 2015, Double Tree House, Oak Ridge, TN
Research Org:
GrafTech International Holdings Inc.
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Advanced Manufacturing Office (EE-5A)
Country of Publication:
United States