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A kind of chitosan quaternary ammonium salt/carboxymethyl cellulose superabsorbent gel and its preparation method and application

A carboxymethyl cellulose, chitosan quaternary ammonium salt technology, applied in absorbent pads, bandages, medical science and other directions, can solve problems such as application limitations and toxicity, and achieve low cost, simple preparation process, and product market demand. big effect

Active Publication Date: 2019-11-26
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The preparation of superabsorbent gels usually uses chemical cross-linking agents, but the currently commonly used cross-linking agents such as aldehydes have their own toxicity and safety problems, which limits their application in the fields of biomedical and personal hygiene materials.

Method used

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  • A kind of chitosan quaternary ammonium salt/carboxymethyl cellulose superabsorbent gel and its preparation method and application
  • A kind of chitosan quaternary ammonium salt/carboxymethyl cellulose superabsorbent gel and its preparation method and application
  • A kind of chitosan quaternary ammonium salt/carboxymethyl cellulose superabsorbent gel and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of chitosan quaternary ammonium salt / carboxymethyl cellulose superabsorbent gel is prepared by the following method:

[0031] (1) A certain amount of chitosan quaternary ammonium salt (consumption is 20% of the total mass of chitosan quaternary ammonium salt and carboxymethyl cellulose two polysaccharides) is dissolved in an appropriate amount of distilled water, stirred until completely dissolved; Methyl cellulose (consumption is 80% of the total mass of chitosan quaternary ammonium salt and carboxymethyl cellulose two kinds of polysaccharides), fully stirred evenly, obtains the composite solution of chitosan quaternary ammonium salt and carboxymethyl cellulose;

[0032] (2) Add citric acid solution to the composite solution obtained in step (1) (the amount of citric acid is 10% of the total mass of chitosan quaternary ammonium salt and carboxymethyl cellulose two polysaccharides), and stir evenly at 30 ° C to obtain shell A mixed solution of polysaccharide quat...

Embodiment 2

[0041] A chitosan quaternary ammonium salt / carboxymethylcellulose superabsorbent gel is prepared by the following method:

[0042] (1) A certain amount of chitosan quaternary ammonium salt (consumption is 20% of the total mass of chitosan quaternary ammonium salt and carboxymethyl cellulose two polysaccharides) is dissolved in an appropriate amount of distilled water, stirred until completely dissolved; Methyl cellulose (consumption is 80% of the total mass of chitosan quaternary ammonium salt and carboxymethyl cellulose two kinds of polysaccharides), fully stirred evenly, obtains the composite solution of chitosan quaternary ammonium salt and carboxymethyl cellulose;

[0043] (2) in step (1) gained composite solution, add the citric acid solution of set amount (citric acid consumption is 3% of two kinds of polysaccharide gross mass of chitosan quaternary ammonium salt and carboxymethyl cellulose), at 30 ℃ Stir evenly to obtain a mixed solution of chitosan quaternary ammonium ...

Embodiment 3

[0048] A kind of chitosan quaternary ammonium salt / carboxymethyl cellulose superabsorbent gel is prepared by the following method:

[0049] (1) A certain amount of chitosan quaternary ammonium salt (consumption is 20% of the total mass of chitosan quaternary ammonium salt and carboxymethyl cellulose two polysaccharides) is dissolved in an appropriate amount of distilled water, stirred until completely dissolved; Methyl cellulose (consumption is 80% of the total mass of chitosan quaternary ammonium salt and carboxymethyl cellulose two kinds of polysaccharides), fully stirred evenly, obtains the composite solution of chitosan quaternary ammonium salt and carboxymethyl cellulose;

[0050] (2) add the citric acid solution (the amount of citric acid is 10% of chitosan quaternary ammonium salt and carboxymethyl cellulose two kinds of polysaccharide gross mass) of set amount in the compound solution gained in step (1), at 30 ℃ Stir evenly to obtain a mixed solution of chitosan quater...

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Abstract

The invention belongs to the technical fields of functional polymer materials and biomedical materials, and in particular relates to chitosan quaternary ammonium salt / carboxymethyl cellulose superabsorbent gel as well as a preparation method and application thereof. The superabsorbent gel is prepared by carrying out a cross-linking reaction by taking chitosan quaternary ammonium salt and carboxymethyl cellulose as polysaccharide raw materials and using safe and non-toxic citric acid as a cross-linking agent, wherein the mass of the chitosan quaternary ammonium salt accounts for 10-50% of the total mass of the polysaccharide raw materials, and the carboxymethyl cellulose accounts for 50-90% of the total mass of the polysaccharide raw materials. The superabsorbent gel provided by the invention has excellent swelling performance for pure water, physiological saline, a glucose solution, a urea solution and synthetic urine; furthermore, the superabsorbent gel also has excellent antibacterial performance. The superabsorbent gel is environmentally-friendly, simple in technology and low in production cost, thus being expected to be used in biomedical and personal hygiene materials.

Description

technical field [0001] The invention belongs to the technical field of functional polymer materials and also belongs to the field of biomedical materials, and specifically relates to a chitosan quaternary ammonium salt / carboxymethyl cellulose superabsorbent gel and a preparation method and application thereof. Background technique [0002] In recent years, superabsorbent gels (resins) have been widely used in various fields, such as agriculture, sanitary materials, sewage treatment, drug carriers, tissue engineering, and heavy metals, due to their high swelling properties, pH sensitivity, and good water retention properties. Adsorption etc. The market demand for superabsorbent gels is huge. Currently, the most widely used synthetic materials are superabsorbent gels prepared by homopolymerization or copolymerization of monomers such as acrylic acid and acrylamide. The superabsorbent gel generally has good water absorption properties, however, its biodegradability is insuffic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/24C08J3/075C08L1/28C08L5/08A61L15/28A61L15/60A61L15/46
CPCA61L15/28A61L15/46A61L15/60A61L2300/232A61L2300/404C08J3/075C08J3/246C08J2301/28C08J2405/08C08L5/08C08L1/286
Inventor 何广华祝超江靖刘良李亚庆笑艳吕翠芳
Owner WUHAN UNIV OF TECH