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A kind of konjac glucomannan-based antibacterial hydrogel fiber and preparation method thereof

A konjac glucomannan and glucomannan-based technology, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and paper making, can solve the problems of untested safety and lack of antibacterial properties of hydrogel fibers, etc. Achieve the effects of easy continuous production, uniform hydrogel fiber structure, and good water absorption performance

Active Publication Date: 2021-12-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gel obtained in this patent is due to the use of acrylamide as a raw material, and the safety of use is yet to be tested. Acrylamide is in the list of class 2 carcinogens
At the same time, the obtained hydrogel fibers do not have antibacterial properties, and their application in the field of sanitary materials is limited

Method used

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  • A kind of konjac glucomannan-based antibacterial hydrogel fiber and preparation method thereof
  • A kind of konjac glucomannan-based antibacterial hydrogel fiber and preparation method thereof
  • A kind of konjac glucomannan-based antibacterial hydrogel fiber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] This embodiment provides a kind of konjac glucomannan-based antibacterial hydrogel fiber, and the specific preparation steps are as follows:

[0049] Step 1: Preparation of konjac glucomannan polymerizable monomer and organic guanidine salt antibacterial polymerizable monomer:

[0050] a. Preparation of konjac glucomannan polymerizable monomer:

[0051] Add 0.5 g of Konjac glucomannan (KGM) into 50 mL of deionized water, adjust the pH to 7–8 with 0.1 mol / L NaOH solution, add 10 mL of methacrylic anhydride (methacrylic anhydride MA) dropwise, and Stir and react in a water bath for 24 hours. After the reaction is completed, precipitate with ethanol for 3 times, filter and dry in a vacuum oven to obtain konjac glucomannan polymerizable monomers;

[0052] b. the preparation of organic guanidine salt antibacterial monomer:

[0053] Add 5g of guanidine hydrochloride hydrochloride to 25mL of absolute ethanol, heat to 45°C until the guanidine hydrochloride is completely disso...

Embodiment 2

[0062] This embodiment provides a kind of konjac glucomannan-based antibacterial hydrogel fiber, and the specific preparation steps are as follows:

[0063] Step 1: Preparation of konjac glucomannan polymerizable monomer and organic guanidine salt antibacterial polymerizable monomer:

[0064] a. Preparation of konjac glucomannan polymerizable monomer:

[0065] Add 0.5g konjac glucomannan to 50mL deionized water, adjust the pH to 7-8 with 0.1mol / L NaOH solution, add 10mL acrylic anhydride dropwise, stir and react in an ice-water bath for 24 hours, and precipitate with ethanol after the reaction is complete 3 times, drying in a vacuum oven after filtration to obtain konjac glucomannan polymerizable monomer;

[0066] b. the preparation of organic guanidine salt antibacterial monomer:

[0067] Add 5g of guanidine hydrochloride to 25mL of absolute ethanol, heat to 45°C until the guanidine hydrochloride is completely dissolved, then add 10mL of acrylic anhydride dropwise, raise th...

Embodiment 3

[0074] This embodiment provides a kind of konjac glucomannan-based antibacterial hydrogel fiber, and the specific preparation steps are as follows:

[0075] Step 1: Preparation of konjac glucomannan polymerizable monomer and organic guanidine salt antibacterial polymerizable monomer:

[0076] a. Preparation of konjac glucomannan polymerizable monomer:

[0077] Add 0.5g konjac glucomannan to 50mL deionized water, adjust the pH to 7-8 with 0.1mol / L NaOH solution, add 10mL methacrylic anhydride dropwise, stir and react in an ice-water bath for 24 hours, and use Precipitate with ethanol for 3 times, filter and dry in a vacuum oven to obtain konjac glucomannan polymerizable monomer;

[0078] b. the preparation of organic guanidine salt antibacterial monomer:

[0079] Add 5g of guanidine hydrochloride hydrochloride to 25mL of absolute ethanol, heat to 45°C until the guanidine hydrochloride is completely dissolved, then add 10mL of methacrylic anhydride dropwise, raise the temperat...

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Abstract

A konjac glucomannan-based antibacterial hydrogel fiber and a preparation method thereof, the method comprising: in parts by weight, the raw material components include: 50-100 parts of konjac glucomannan polymerizable monomers, alginate 100-800 parts, 10-20 parts of organic guanidine salt polymerizable monomers, 10,000-40,000 parts of deionized water, and 0.1-5 parts of initiator. The preparation process includes three steps: (1) preparation of modified konjac glucomannan with double bond in side group and antibacterial organic guanidine salt polymerizable monomer; (2) preparation of spinning solution; (3) two-step cross-linking preparation of hydrogel fibers. The preparation method of the invention is simple and safe, low in cost, rich in raw materials and strong in experiment repeatability; no high-voltage electric field is involved in the preparation process, no organic solvent is involved, no pollution, no damage to cells, and cell encapsulation can be realized; The obtained hydrogel fibers are not only uniform, controllable in size, improved in mechanical properties, good in water absorption, but also have good biocompatibility, excellent antibacterial properties, and have broad application prospects, especially in the field of sanitary materials.

Description

technical field [0001] The invention belongs to the field of hydrogel fibers and preparation thereof, in particular to a preparation method of konjac glucomannan-based antibacterial hydrogel fibers. Background technique [0002] Hydrogel is a new type of functional polymer material with environmental sensitivity, high absorption and slow release. It is a polymer with a three-dimensional network structure formed by cross-linking through hydrogen bonds, ionic bonds and covalent bonds. It can absorb a large amount of water without being dissolved, and has good water absorption and film-forming properties. Hydrogel fibers not only have the above characteristics, but also have a fiber or fibrous shape. This fiber shape increases its specific surface area and aspect ratio, which not only improves the swelling performance, sustained release performance, immobilization ability and other properties of the hydrogel fiber, but also endows it with many new uses. These characteristics ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/18D01F1/10C08B37/14
CPCC08B37/009D01F1/103D01F8/18
Inventor 吴德群黄凯聪韩华李发学王学利俞建勇
Owner DONGHUA UNIV
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