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    • 6. 发明申请
    • REFINING CELLULOSE IN A SOLVENT FOR PRODUCTION OF NANOCELLULOSE MATERIALS
    • 用于生产纳米纤维素材料的溶剂中的精制纤维素
    • WO2015187296A1
    • 2015-12-10
    • PCT/US2015/029566
    • 2015-05-07
    • API INTELLECTUAL PROPERTY HOLDINGS, LLC
    • RETSINA, TheodoraO'CONNOR, Ryan
    • D21B1/04D21C5/00C08B15/08B82Y40/00
    • C08B1/003B82Y40/00C08B15/02C08B15/08C08H6/00C08H8/00C08L1/04D21C5/00D21D1/20D21H11/18
    • Cellulose precursor materials may be refined (e.g., fibrillated) in an ethanol medium, or other solvent medium, instead of water. Following refining, the solvent may be removed and recycled prior to incorporation into another material, or optionally, following such incorporation. The solvent may assist the incorporation of nanocellulose into another material (e.g., a polymer) for a composite, for example. In some variations, a process comprises fractionating a biomass feedstock in the presence of an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; mechanically treating the celluloserich solids, in the presence of a refining solvent, to form cellulose fibrils and/or cellulose crystals, thereby generating a nanocellulose material; recovering and recycling the refining solvent; and recovering the nanocellulose material or incorporating the nanocellulose material into a composite material.
    • 纤维素前体材料可以在乙醇介质或其它溶剂介质中而不是水中被精制(例如,原纤化)。 精炼后,可以将溶剂除去并再循环,然后再掺入另一种材料中,或任选地,在这样的掺入之后。 例如,溶剂可以有助于将纳米纤维素结合到用于复合材料的另一种材料(例如,聚合物)中。 在一些变型中,方法包括在酸,木质素和水的溶剂的存在下分解生物质原料,以产生富含纤维素的固体和含有半纤维素和木质素的液体; 在精制溶剂的存在下机械处理纤维素固体,以形成纤维素原纤维和/或纤维素晶体,由此产生纳米纤维素材料; 回收和再循环精炼溶剂; 并回收纳米纤维素材料或将纳米纤维素材料掺入复合材料中。