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Improvement of Mechanical Properties of Softwood Lignin-Based Carbon Fibers

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Title: Improvement of Mechanical Properties of Softwood Lignin-Based Carbon Fibers
Authors: Lin, Jian Browse this author
Koda, Keiichi Browse this author →KAKEN DB
Kubo, Satoshi Browse this author
Yamada, Tatsuhiko Browse this author
Enoki, Makiko Browse this author
Uraki, Yasumitsu Browse this author →KAKEN DB
Keywords: Softwood lignin
chemical curing
carbon fibers
mechanical properties
Issue Date: 1-Jun-2014
Publisher: Taylor & francis inc
Journal Title: Journal of wood chemistry and technology
Volume: 34
Issue: 2
Start Page: 111
End Page: 121
Publisher DOI: 10.1080/02773813.2013.839707
Abstract: PEG-lignin fibers obtained by a solvolysis pulping of Japanese cedar with polyethylene glycol (PEG) 400 were successfully converted into defective-free, infusible fibers as a precursor for carbon fibers (CFs) by chemical curing followed by oxidative thermostabilization. The curing was performed by immersing PEG-lignin fibers in an aqueous mixed solution of hexamethylenetetramine (60g/L) and hydrochloric acid (3M) at 85 degrees C for 1h, resulting in the formation of crosslinkages between lignin molecules through methylene groups. These cured fibers were completely thermostabilized upon heating up to 250 degrees C at a heating rate of 2 degrees C/min under an air atmosphere. Finally, the thermostabilized fibers were carbonized to yield CFs, which showed about 1.5times the tensile strength of our CFs previously prepared.
Rights: This is an Author's Accepted Manuscript of an article published in [include the complete citation information for the final version of the article as published in the [JOURNAL TITLE] [date of publication] [copyright Taylor & Francis], available online at:[Article DOI].
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 幸田 圭一

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