Nanolignocellulose compositions and processes to produce these compositions

• Main Authors: NELSON KIMBERLY, RETSINA THEODORA
• Format: Patent
• Language: Chinese; English
• Published: 21.02.2020
• Subjects: IMPREGNATING OR COATING OF PAPER; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PERFORMING OPERATIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TEXTILES; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

Some variations provide a new nanolignocellulose composition comprising, on a bone-dry, ash-free, and acetyl-free basis, from 35 wt% to 80 wt% cellulose nanofibrils, cellulose microfibrils, or a combination thereof, from 15 wt% to 45 wt% lignin, and from 5 wt% to 20 wt% hemicelluloses. The hemicelluloses may contain xylan or mannan as the major component. Novel properties arise from the hemicellulose content that is intermediate between high hemicellulose content of raw biomass and low hemicellulose content of conventional nanocellulose. The nanolignocellulose composition is hydrophobic due tothe presence of lignin. Processes for making and using the nanolignocellulose compositions are also described. 一些变型提供了一种新型纳米木质纤维素组合物，其在干透、不含灰分并且不含乙酰基的基础上，包含：35wt％至80wt％的纤维素纳米原纤维、纤维素微原纤维或其组合；15wt％至45wt％的木质素；以及5wt％至20wt％的半纤维素。半纤维素可以含有木聚糖或甘露聚糖作为主要组分。由半纤维素含量介于原料生物质的高半纤维素含量和常规纳米纤维素的低半纤维素含量之间而产生新颖的性质。由于木质素的存在，纳米木质纤维素组合物是疏水性的。还描述了用于制造和使用纳米木质纤维素组合物的方法。