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Lignin-derived thermoplastic co-polymers and methods of preparation

Patent ·
OSTI ID:1134075
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The present invention relates to a crosslinked lignin comprising a lignin structure having methylene or ethylene linking groups therein crosslinking between phenyl ring carbon atoms, wherein said crosslinked lignin is crosslinked to an extent that it has a number-average molecular weight of at least 10,000 g/mol, is melt-processible, and has either a glass transition temperature of at least 100.degree. C., or is substantially soluble in a polar organic solvent or aqueous alkaline solution. Thermoplastic copolymers containing the crosslinked lignin are also described. Methods for producing the crosslinked lignin and thermoplastic copolymers are also described.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
8,748,537
Application Number:
14/058,657
OSTI ID:
1134075
Country of Publication:
United States
Language:
English

References (3)

Enzymatic co-polymerization of lignin with low-molecular mass compounds journal January 1994
Lignin-based Carbon Fibers: Effect of Synthetic Polymer Blending on Fiber Properties journal April 2005
Lignin-based carbon fibers: Oxidative thermostabilization of kraft lignin journal January 2005

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Related Subjects

36 MATERIALS SCIENCE