NANOCELLULOSE-POLYMER COMPOSITES, AND PROCESSES FOR PRODUCING THEM
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United States of America
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Issued Date -
Jan 9, 2025
app pub date -
May 20, 2024
filing date -
May 20, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
A polymer-nanocellulose-lignin composite as disclosed comprises a polymer, nanocellulose, and lignin, wherein lignin forms a hydrophobic interface between the polymer and the nanocellulose. In some variations, a process is disclosed for producing a polymer-nanocellulose-lignin composite material, comprising: fractionating lignocellulosic biomass in the presence of an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin, wherein lignin deposits onto fiber surfaces or into fiber pores; mechanically treating the cellulose-rich solids to form a hydrophobic nanocellulose material comprising cellulose fibrils and/or cellulose crystals; hydrolyzing the hemicellulose to generate fermentable hemicellulosic sugars; fermenting the fermentable hemicellulosic sugars to generate a monomer or monomer precursor; polymerizing the monomer to produce a polymer; and combining the polymer with the lignin-coated nanocellulose to generate a polymer-nanocellulose-lignin composite material for use in a wide variety of products.
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International Classification(s)
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- D21B:FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMEN....
- C08H:DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- B82Y:SPECIFIC USES OR APPLICATIONS OF NANO-STRUCTURES; ....
- C12P:FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESI....
- C08B:POLYSACCHARIDES; DERIVATIVES THEREOF
- D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- D21C:PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE ....
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