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Chitosan derivative antibacterial superabsorbent gel and preparation method therefor

A technology of chitosan derivatives and superabsorbent, applied in the field of biomaterials and natural polymers, can solve the problems of insufficient antibacterial properties and limited applications, and achieve the effects of overcoming the insufficient antibacterial performance, low preparation cost, and wide sources

Inactive Publication Date: 2015-10-21
YUHUAN MARINE BIOCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the antibacterial properties of traditional superabsorbent resins are insufficient, which limits their application in the field of hygiene.

Method used

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  • Chitosan derivative antibacterial superabsorbent gel and preparation method therefor
  • Chitosan derivative antibacterial superabsorbent gel and preparation method therefor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of chitosan derivative antibacterial superabsorbent gel, it comprises the steps:

[0026] 1) Selection of raw materials: according to the mass percentage of each raw material: chitosan quaternary ammonium salt 11%, acrylic acid 89%, potassium persulfate 1.8%, N, N-methylenebisacrylamide 0.36%, for later use;

[0027] 2) Weigh chitosan quaternary ammonium salt in a beaker according to the proportion, add 60ml of distilled water, stir to make it dissolve, and transfer it to a 250ml three-neck flask after dissolving evenly;

[0028] 3) Weigh a certain amount of acrylic acid (AA) in a 50ml round bottom bottle, add 15% NaOH solution dropwise while stirring under ice bath conditions, the neutralization degree is 80%, after the neutralization reaction is complete, the acrylic acid Sodium solution is transferred in the three-necked flask;

[0029] 4) Introduce nitrogen gas into the three-necked flask, and stir to mix the solution evenly; add the initiator ...

Embodiment 2

[0033] A preparation method of chitosan derivative antibacterial superabsorbent gel, it comprises the steps:

[0034] 1) Selection of raw materials: according to the mass percentage of each raw material: chitosan quaternary ammonium salt 12.5%, acrylic acid 87.5%, potassium persulfate 2.6%, N, N-methylenebisacrylamide 0.35%, for later use;

[0035] 2) Weigh chitosan quaternary ammonium salt in a beaker according to the proportion, add 60ml of distilled water, stir to make it dissolve, and transfer it to a 250ml three-neck flask after dissolving evenly;

[0036] 3) Weigh a certain amount of acrylic acid (AA) in a 50ml round bottom bottle, add 15% NaOH solution dropwise while stirring under ice bath conditions, the neutralization degree is 80%, after the neutralization reaction is complete, the acrylic acid Sodium solution is transferred in the three-necked flask;

[0037] 4) Introduce nitrogen gas into the three-necked flask, and stir to mix the solution evenly; add the initia...

Embodiment 3

[0041] A preparation method of chitosan derivative antibacterial superabsorbent gel, it comprises the steps:

[0042] 1) Selection of raw materials: according to the mass percentage of each raw material: 20% chitosan quaternary ammonium salt, 80% acrylic acid, 1.6% potassium persulfate, 0.32% N, N-methylenebisacrylamide, for future use;

[0043] 2) Weigh chitosan quaternary ammonium salt in a beaker according to the proportion, add 60ml of distilled water, stir to make it dissolve, and transfer it to a 250ml three-neck flask after dissolving evenly;

[0044] 3) Weigh a certain amount of acrylic acid (AA) in a 50ml round bottom bottle, add 15% NaOH solution dropwise while stirring under ice bath conditions, the neutralization degree is 80%, after the neutralization reaction is complete, the acrylic acid Sodium solution is transferred in the three-necked flask;

[0045] 4) Introduce nitrogen gas into the three-necked flask, and stir to mix the solution evenly; add the initiator...

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Abstract

The invention relates to a chitosan derivative antibacterial superabsorbent gel and a preparation method therefor. The gel is prepared by using quaternized chitosan, acrylic acid, an initiator and a crosslinking agent, and mass percentages of raw materials are: 10-25% of quaternized chitosan, 75-90% of acrylic acid, 0.5-3% of initiator and 0.2-0.6% of crosslinking agent. The degree of swelling of the superabsorbent gel in water can reach 500 (g / g), and the gel has good antibacterial properties for gram-negative and gram-positive bacteria. The preparation method is simple in process and low in cost.

Description

technical field [0001] The invention belongs to the technical field of natural macromolecules, and also belongs to the technical field of biological materials, in particular to a chitosan derivative antibacterial superabsorbent gel and a preparation method thereof. The hydrogel is expected to be applied in the fields of hygiene and medicine. Background technique [0002] Super Absorbent Polymer (SAP) refers to a functional polymer material containing certain hydrophilic groups on the molecular chain. This type of material is slightly cross-linked by a cross-linking agent and forms a three-dimensional network structure inside, which can absorb Moisture and locks in moisture. Due to its special properties, superabsorbent resins are widely used in infant and female hygiene products, food preservatives, soil improvers in gardening, drug release, industrial dehydrating agents, and intelligent hydrogel materials. At present, researchers from various countries are devoting themse...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F220/06C08F222/38A61L15/28A61L15/60A61L15/44
Inventor 林昌宇何广华郑化林昌恺胡夏芬柯弯弯殷以华易英
Owner YUHUAN MARINE BIOCHEM
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