Konjac glucomannan glycosyl 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, conjugated rayon, etc., can solve the problem that hydrogel fibers do not have antibacterial properties and safety needs to be tested, etc. problems, to achieve the effect of easy continuous production, abundant raw materials, and good biocompatibility

Active Publication Date: 2019-07-30
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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  • Konjac glucomannan glycosyl antibacterial hydrogel fiber and preparation method thereof
  • Konjac glucomannan glycosyl antibacterial hydrogel fiber and preparation method thereof
  • Konjac glucomannan glycosyl antibacterial hydrogel fiber and preparation method thereof

Examples

Experimental program
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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

The invention discloses a konjac glucomannan glycosyl antibacterial hydrogel fiber and a preparation method thereof. The fiber comprises the following raw material components in parts by weight: 50-100 parts of konjac glucomannan polymerizable monomers, 100-800 parts of alginate, 10-20 parts of organic guanidine salt polymerizable monomers, 10000-40000 parts of deionized water and 0.1-5 parts of an initiator. The preparation method comprises the following steps: (1) preparing modified konjac glucomannan with double bonds on side groups and the organic guanidine salt polymerizable monomer; (2)preparing a spinning liquid; and (3) preparing a hydrogel fiber by using a two-step crosslinking method. The preparation method disclosed by the invention is simple and safe, low in cost, rich in material and good in experiment repeatability; no high-voltage electric field is used in the preparation process, no organic solvent is used, no pollution can be caused, cell damage can be avoided, and cell packaging can be achieved; the prepared hydrogel is not only uniform, controllable in size, high in mechanical property and good in water absorption performance, but also good in biocompatibility,and has an excellent antibacterial property and a wide application prospect, particularly 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 Applications(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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