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Thermal and rheological characteristics of biobased carbon fiber precursor derived from low molecular weight organosolv lignin
journal contribution
posted on 2015-01-01, 00:00 authored by Seyedeh Azam Oroumei, Bronwyn Fox, Minoo NaebeMinoo NaebeIn the present work, electrospinnability as well as thermal, rheological, and morphological characteristics of low molecular weight hardwood organosolv lignin, as a potential precursor for carbon fiber, was investigated. Submicromter biobased fibers were electrospun from a wide range of polymer solutions with different ratios of organosolv lignin to polyacrylonitrile (PAN). Rheological studies were conducted by measuring viscosity, surface tension, and electrical conductivity of hybrid polymer solutions, and used to correlate electrospinning behavior of solutions with the morphology of the resultant electrospun composite fibers. Using scanning electron microscopy (SEM) images, the solutions that led to the formation of bead-free uniform fibers were found. Differential scanning calorimetry (DSC) analysis revealed that lignin-based fibers enjoy higher decomposition temperatures than that of pure PAN. Thermal stability of the lignin-based fibers was investigated by thermogravimetric analysis (TGA) indicating a high carbon yield of above 50% at 600 °C, which is highly crucial in the production of low-cost carbon fiber. It was also observed that organosolv lignin synergistically affects thermal decomposition of composite fibers. A significant lower activation energy was found for the pyrolysis of lignin-derived electrospun fibers compared to that of pure PAN.
History
Journal
ACS sustainable chemistry and engineeringVolume
3Issue
4Pagination
758 - 769Publisher
American Chemical SocietyLocation
Washington, D.C.Publisher DOI
eISSN
2168-0485Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2015, American Chemical SocietyUsage metrics
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No categories selectedKeywords
Science & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryGreen & Sustainable Science & TechnologyEngineering, ChemicalChemistryScience & Technology - Other TopicsEngineeringCarbon fiberLigninBiopolymerSynergistic effectKineticsElectrospinningELECTROSPUN POLYACRYLONITRILECO-PYROLYSISNANOFIBERSCELLULOSEBLENDSBEHAVIORBIOMASSMATS
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