Biomass-base hydrogel as well as preparation method and application thereof

Abstract

The invention discloses biomass-base hydrogel as well as a preparation method and application thereof. The method comprises the following steps: sequentially mixing acrylic acid, a neutralizer, acrylamide and biomass, adding deionized water for dissolving, and carrying out constant-temperature stirring so as to obtain mixed liquid; and adding a mixed solution of an initiator and a cross-linking agent into the obtained mixed liquid, stirring, heating to 90-100 DEG C, naturally cooling and forming (or the solution naturally swells and forms after the temperature is heated to be above 100 DEG C while stirring), sequentially washing with deionized water, absolute ethanol and deionized water until the pH value of cleaned wastewater is nearly neutral, and carrying out constant-temperature drying, so as to obtain the biomass-base hydrogel. The method is simple and convenient in operation, a used instrument is simple, the time required by the preparation is short, the preparation cost is low, and the method has wide popularization basis; and by adding biomasses such as bamboos, cassava and eucalyptus sawdust, the problem that pure hydrogel is difficult to be degraded is solved, meanwhile, the production cost of the product is lowered, and the mechanical properties of the hydrogel are improved.

Description

technical field [0001] The invention belongs to the field of hydrogels, and in particular relates to a biomass-based hydrogel and its preparation method and application. Background technique [0002] Bio-based materials refer to a new class of materials manufactured by biological, chemical and physical means using renewable biomass, including crops, trees and other plants and their residues and contents as raw materials. It mainly includes bioplastics, bio-based platform compounds, biomass functional polymer materials, functional sugar products, wood-based engineering materials and other products, which are green, environmentally friendly, renewable and biodegradable. [0003] Hydrogels are a kind of polymers that are hydrophilic but insoluble in water. They swell rapidly in water to equilibrium, and dehydrate and deswell under certain conditions while still maintaining their original shape. A functional polymer material that combines water absorption, water retention and s...

AI Technical Summary

Problems solved by technology

Although some progress has been made in the research of biomass-based hydrogels, there are still many challenges in material preparation and practical application.

First, the current research on biomass-based hydrogels basically takes a single type of biomass as the research object, so the prepared biomass-based hydrogels do not have good performance for comprehensive applications in many aspects

Second, in terms of preparation, there are many factors that affect the preparation reaction of biomass resin materials, but there are few and inconsistent studies on this aspect, and there is still no systematic reference for the factors that affect the preparation of biomass-based hydrogels. Third, the performance of the currently researched biomass-based hydrogels has relatively large limitations, and it is difficult to meet the requirements of various application fields, the application range is limited, and the application cost is high.

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