Preparation method and application of ultra-porous hydrogel containing natural plant polysaccharide

A technology of porous hydrogels and natural plants, applied in the field of superporous hydrogels and their preparation, can solve the problems of increasing the internal surface area of ​​hydrogels, poor mechanical strength, etc., and achieve the effects of excellent mechanical strength and volume doubling

Inactive Publication Date: 2012-06-13
NINGXIA MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the traditional hydrogel, because it contains a large number of interconnected pores, the internal surface area of ​​the hydrogel is greatly increased, so that its swelling is very fast, usually in a few seconds to a few minutes, that is, it has the property of rapid swelling; but Often the mechanical strength is poor, which limits its application in various fields

Method used

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  • Preparation method and application of ultra-porous hydrogel containing natural plant polysaccharide
  • Preparation method and application of ultra-porous hydrogel containing natural plant polysaccharide
  • Preparation method and application of ultra-porous hydrogel containing natural plant polysaccharide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 3 mL of 50% AM (acrylamide) solution, 0.3 mL of 50% AA (acrylic acid) solution, 1 mL of 2.5% Bis (N, N-methylene-bisacrylamide) solution, and 1.8 mL of distilled water in a tall weighing bottle , 0.2mL 10% PF127 (poloxamer PF127) solution, 0.1mL 20% APS (ammonium persulfate) solution, 0.1g konjac gum, 0.1mL 20% TEMED (N, N, N, N'-tetramethylethyl Diamine) solution. And after each ingredient is added, vortex to mix well. After standing for a certain period of time, add 0.2gNaHCO 3 Mix well and cure at room temperature. Use different concentrations of ethanol as the dialysate to remove unreacted monomers and initiators, and finally dry them in a drying oven.

Embodiment 2

[0018] Add 2mL 50% AM (acrylamide) solution, 0.35mL 50% MA (methacrylic acid) solution, 4mL 2.5% Bis (N, N-methylene-bisacrylamide) solution, 1.3 mL distilled water, 0.6mL 10% PF127 (poloxamer PF127) solution, 0.55mL 20% APS (ammonium persulfate) solution, 0.1g konjac gum, 0.55mL 20% TEMED (N, N, N, N'-four Methylethylenediamine) solution. And after each ingredient is added, vortex to mix well. After standing for a certain period of time, add 0.5gNaHCO 3 Mix well and cure at room temperature. Use different concentrations of ethanol as the dialysate to remove unreacted monomers and initiators, and finally dry them in a drying oven.

Embodiment 3

[0020] Add 1mL 50% AM (acrylamide) solution, 0.2mL 50% AA (acrylic acid) solution 2mL, 2.5% (GA) glutaraldehyde solution, 1.5mL distilled water, 0.65mL 10% PF127 (poise Loxamer PF127) solution, 0.3mL 20% APS (ammonium persulfate) solution, 0.4g konjac gum, 0.3mL 20% TEMED (N,N,N,N'-tetramethylethylenediamine) solution. And after each ingredient is added, vortex to mix well. After standing for a certain period of time, add 0.6gNa 2 CO 3 Mix well and cure at room temperature. Use different concentrations of ethanol as the dialysate to remove unreacted monomers and initiators, and finally dry them in a drying oven.

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Abstract

The invention provides ultra-porous hydrogel containing natural plant polysaccharide, which is prepared by the steps of dissolving reaction components in water to form a solution after weighing the reaction components according to a certain proportion, adding the natural plant polysaccharide into the solution, and shaking and mixing evenly the natural plant polysaccharide and the solution, wherein the reaction components include, by weight, monomer 0.50-3.00%, distilled water 0.60-4.50%, initiating agent 0.02-0.15%, cross-linking agent 0.03-0.20%, foam stabilizer 0.02-0.18%, foaming agent 0.07-1.00% and the natural plant polysaccharide 0.06-2.00%. The natural plant polysaccharide is introduced into the ultra-porous hydrogel to prepare the ultra-porous hydrogel containing the natural plantpolysaccharide, so that the ultra-porous hydrogel is capable of swelling rapidly in the water, increased in volume and excellent in mechanical strength. Furthermore, the ultra-porous hydrogel containing the natural plant polysaccharide can take advantages of the natural plant polysaccharide completely, and new application fields can be opened up.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a superporous hydrogel containing natural plant polysaccharides and a preparation method and application thereof. Background technique [0002] Superporous Hydrogels (SPH) are hydrophilic polymers with a three-dimensional network structure. Because of the large number of interconnected pores and large specific surface area, they can absorb a large amount of water in a very short time. Compared with the traditional hydrogel, because it contains a large number of interconnected pores, the internal surface area of ​​the hydrogel is greatly increased, so that its swelling is very fast, usually in a few seconds to a few minutes, that is, it has the property of rapid swelling; but The mechanical strength is often poor, which limits its application in various fields. Natural plant polysaccharides are rich in resources, widely sourced, low in price, less toxic and side effects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/56C08F220/54C08F222/38C08F220/06C08F220/28C08F220/58C08J9/04A61K47/32
Inventor 王文苹隋宏吴洋马妍妮韩欣
Owner NINGXIA MEDICAL UNIV
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