A poplar wood steam explosion liquid hemicellulose-based hydrogel and preparation method thereof

Abstract

The invention provides a poplar steam explosion fluid hemicellulose-based hydrogel and a preparation method thereof. The poplar steam explosion fluid hemicellulose-based hydrogel is composed of hemicellulose, acrylamide and acrylamide in the poplar steam explosion fluid. A polymer with a three-dimensional network structure formed by acrylic acid graft copolymerization, and poplar wood steam explosion liquid is obtained by steam explosion of poplar wood. The wood steam explosion fluid hemicellulose-based hydrogel and its preparation method, the hydrogel is mainly composed of hemicellulose in the poplar wood steam explosion fluid, the source of starting preparation materials is wide, the environmental protection is strong, and the preparation of the hydrogel The method is simple and practical, and the obtained hydrogel has excellent water retention performance.

Description

technical field [0001] The invention belongs to the technical field of hydrogel preparation, and in particular relates to a poplar wood steam explosion liquid hemicellulose-based hydrogel and a preparation method thereof. Background technique [0002] Hydrogel is a kind of hydrophilic network polymer swelling body that can swell in water, absorb and retain a large amount of water, and will not dissolve in water. There are hydrophilic groups on its main chain or side chain. After swelling A portion of water can form hydrogen bonds with these hydrophilic groups, thereby retaining a large amount of water. Due to its functional properties such as water retention and thickening, hydrogels have been widely used in various industries in recent years. [0003] The acquisition and preparation of hydrogels are mainly divided into two categories from the source of materials: one is synthetic hydrogels based on petroleum sources, such as polyacrylic acid and its ester series hydrogels,...

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Problems solved by technology

[0003] The acquisition and preparation of hydrogels are mainly divided into two categories from the source of materials: one is synthetic hydrogels based on petroleum sources, such as polyacrylic acid and its ester series hydrogels, polyvinyl alcohol series hydrogels, and polyvinyl alcohol series hydrogels. Gel etc., such as the publication number is CN106554454A, the patent name is a kind of preparation method of polyacrylic acid hydrogel adsorption material and the patent of application discloses a kind of preparation method of polyacrylic acid hydrogel, but this kind of hydrogel has its The initial preparation material is non-renewable energy, and the environmental protection performance is poor; the second is the non-synthetic hydrogel with natural polymer as the main body or starting material, such as starch-based hydrogel and cellulose-based hydrogel belonging to polysaccharides. Hydrogel, etc. The manufacture of this type of hydrogel is basically environmentally friendly and degradable in terms of starting materials, and the source of raw materials is also relatively extensive and renewable. The publication number is CN105504315B, and the patent name is a kind of straw full-component hydraulic The patent on the preparation method of glue and its application discloses a method of preparing hydrogel with straw as the starting material, but the method uses chemical methods to pretreat the straw to break the fibers in the straw and destroy the hemicellulose 1. The encapsulation of cellulose by lignin has poor treatment effect, high energy consumption, complicated method, and poor practicability; in addition, the hydrogel with natural polymer as the main body in the prior art has poor water retention performance, which hinders its application

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