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Characterization of soda hardwood lignin and the formation of lignin fibers by melt spinning

Authors

  • Abdul Awal,

    Corresponding author
    1. Centre for Biocomposites and Biomaterials Processing, University of Toronto, 33 Willcocks Street, Toronto, Ontario M5S 3B3, Canada
    • Centre for Biocomposites and Biomaterials Processing, University of Toronto, 33 Willcocks Street, Toronto, Ontario M5S 3B3, Canada
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  • Mohini Sain

    1. Centre for Biocomposites and Biomaterials Processing, University of Toronto, 33 Willcocks Street, Toronto, Ontario M5S 3B3, Canada
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Abstract

Lignin fibers were developed from a commercial available soda hardwood lignin (SHL) with a melt-spinning approach. SHL showed spinnability to form the fine fibers when poly(ethylene oxide) was used as a plasticizer with lignin. The thermal properties of lignin provided valuable information to assist the processing steps of the lignin fiber formation. The guaiacyl/syringyl ratio in SHL was determined by 31P-NMR because it had great influence on the thermal mobility of lignin. A suitable temperature profile for the melt spinning was predicted through rheological studies of lignin. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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