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Mechanical property optimization of wet-spun lignin/polyacrylonitrile carbon fiber precursor by response surface methodology
Lignin, nature’s abundant polymer with a remarkably high carbon content, is an ideal bio-renewable precursor for carbon fiber production. However, the poor mechanical property of lignin-derived fibers has hindered their industrial application as carbon fiber precursor. In this work, process engineering through the application of computational modeling was performed to optimize wet-spinning conditions for the production of lignin precursor fibers with enhanced mechanical properties. Continuous lignin-derived precursor fibers with the maximum possible lignin content were successfully produced in a blend with polyacrylonitrile, as a wet-spinning process facilitator. Response surface methodology was employed to systematically investigate the simultaneous influence of material and process variables on mechanical properties of the precursor fibers. This allowed generating a mathematical model that best predicted the tensile strength of the precursor fibers as a function of the processing variables. The optimal wet-spinning conditions were obtained by maximizing the tensile strength within the domain of the developed mathematical model.
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Journal
Fibers and polymersVolume
18Issue
11Pagination
2079 - 2093Publisher
SpringerLocation
Cham, SwitzerlandPublisher DOI
ISSN
1229-9197Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2017, The Korean Fiber Society and Springer Science+Business Media B.V., part of Springer NatureUsage metrics
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