Abstract
AbstractA Kraft hardwood lignin (HWL) and an organic‐purified hardwood lignin (HWL‐OP) were evaluated as potential precursors for the production of low‐cost carbon fibers. It was found that the unpurified HWL exhibited poor spinnability while the HWL‐OP exhibited excellent spinnability characteristics. Fibers of various diameters were obtained from the HWL‐OP. Thermostabilization studies showed that oxidative stabilization can only be used to convert HWL‐OP‐based fibers into carbon fibers if extremely low heating rates are applied. Carbonized lignin‐based fibers had tensile strength of 0.51 GPa and tensile modulus of 28.6 GPa. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
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