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ISU researchers have developed a process to produce carbon fibers from cheap lignin precursors.

Carbon fibers have become a material of great interest due to their incredible structural properties while maintaining low weight. To date, the majority of carbon fibers are produced from polyacrylonitrile. Carbon fiber applications and markets have been restricted by the high cost of this petroleum-based feedstock. Lignin is a commonly suggested feedstock as a low cost alternative due to its existing highly aromatic character. However, thus far, carbon fibers drawn from lignin are far too brittle or otherwise lacking in the strength required for many applications. Iowa State University researchers have developed a way to modify and process lignin into carbon fibers. The processing technique provides great structural enhancements when compared to other carbon fibers produced from lignin or similarly cheap feedstock.

• Cheaper than polyacetonitrile carbon fiber

• Stronger than other lignin based carbon fiber

Patent(s) Applied For