Biomass acid material and preparation method thereof

Abstract

The invention discloses a biomass acid material which is obtained through reaction of a biomass material and aldehyde acid, wherein the biomass material contains one or more of active groups, namely hydroxyl, amino, an aldehyde group or an ester group. According to the biomass acid material, leftover materials of natural plant resources are utilized, so that additional resource consumption is not needed and the biomass acid material meets the circular economy requirement.

Description

technical field [0001] The invention belongs to the field of natural products and circular economy, and in particular relates to the modification and preparation of a biomass acid material. Background technique [0002] Biomass materials use woody plants, grasses and vines and their processing residues and wastes as raw materials, and process and manufacture new materials with excellent performance and high added value through high-tech means such as physics, chemistry and biology. [0003] Coir (Latin name: Cocos Nucifera L. ) is the endocarp of the palm plant coconut. After drying, the horny flakes are brownish brown and extremely hard. Chemical Composition Coconut shell contains 0.61% ash, 36.51% lignin, 53.06% cellulose, and 29.27% ​​(total amount) of pentosan. [0004] The powder made of wood is called wood powder, which generally refers to the leftover scraps from wood processing in furniture factories, MDF factories, and multilayer board factories. The main compone...

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Problems solved by technology

[0008] At present, the introduction of biomass acidic groups mainly adopts esterification method. The esterification reagents are mainly oleum, chlorosulfonic acid, sulfur trioxide, etc., and the solvents used are mainly dimethyl sulfoxide, N,N-dimethylmethane, etc. Amides, pyridine, etc., heavy air pollution, highly toxic solvents and difficult to recycle, do not meet the requirements of green environmental protection