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Graphene and sodium alginate composite hydrogel fiber and preparation method thereof

A hydrogel fiber and composite hydrogel technology, which is applied in the field of fiber manufacturing, can solve the problems of low strength and easy breakage of seaweed fibers, and achieve the effects of inhibiting Staphylococcus aureus, good moisture absorption and water retention, and improved moisture absorption

Pending Publication Date: 2022-02-15
青岛海赛尔新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a graphene sodium alginate composite hydrogel fiber and a preparation method thereof. The graphene sodium alginate composite hydrogel fiber prepared by the present invention not only has good hygroscopicity, but also has fast water absorption. The performance of the gel can ensure that the fiber material has good moisture absorption, water retention, moisture retention, and air permeability, and overcomes the shortcomings of low strength and easy breakage of seaweed fibers

Method used

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  • Graphene and sodium alginate composite hydrogel fiber and preparation method thereof
  • Graphene and sodium alginate composite hydrogel fiber and preparation method thereof
  • Graphene and sodium alginate composite hydrogel fiber and preparation method thereof

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preparation example Construction

[0027] A kind of preparation method of graphene sodium alginate composite hydrogel fiber, comprises the following steps:

[0028] (1) Dissolve sodium alginate in water, add graphene dispersion and cross-linking agent, stir until the solution is evenly dispersed, and make a mixed solution with a sodium alginate content of 4% to 8%; then vacuumize and defoam to obtain Sodium alginate spinning solution;

[0029] (2) Prepare a soluble starch aqueous solution with a mass fraction of 3% to 7%, mix the sodium alginate spinning solution prepared in step (1) with the soluble starch aqueous solution at a weight ratio of 7 to 10:1, and stir until the solution is dispersed Uniformly mixed spinning solution;

[0030] (3) The mixed spinning solution prepared in step (2) is passed through the wet spinning method, and the as-spun fibers are successively passed through the first coagulation bath, and after the ion exchange is performed through the second coagulation bath, they are drawn in th...

Embodiment 1

[0051] A kind of preparation method of graphene sodium alginate composite hydrogel fiber, comprises the following steps:

[0052] (1) Dissolve sodium alginate in water at normal temperature, add graphene dispersion and crosslinking agent, then stir at high speed until the solution is evenly dispersed, and obtain a mixed solution with a sodium alginate content of 4%; then vacuumize and degas 12h, get sodium alginate spinning solution;

[0053] (2) Prepare a soluble starch aqueous solution with a mass fraction of 3%, mix the sodium alginate spinning solution obtained in step (1) with the soluble starch aqueous solution at a weight ratio of 7:1, and stir at a high speed at room temperature until the solution is uniformly dispersed to obtain mixed spinning solution;

[0054] (3) open spinning equipment and carry out wet spinning, and spinning speed is 23m / min, and the mixed spinning solution that step (2) makes is that the thin stream that forms from the spinneret ejection of 0.0...

Embodiment 2

[0057] A kind of preparation method of graphene sodium alginate composite hydrogel fiber, comprises the following steps:

[0058] (1) Dissolve sodium alginate in water at normal temperature, add graphene dispersion and crosslinking agent, then stir at high speed until the solution is evenly dispersed, and obtain a mixed solution with a sodium alginate content of 5%; then vacuumize and degas 14h, get sodium alginate spinning solution;

[0059] (2) Prepare a soluble starch aqueous solution with a mass fraction of 4%, mix the sodium alginate spinning solution obtained in step (1) with the soluble starch aqueous solution at a weight ratio of 8:1, and stir at a high speed at room temperature until the solution is uniformly dispersed to obtain mixed spinning solution;

[0060] (3) Open the spinning equipment and carry out wet spinning, the spinning speed is 24m / min, and the mixed spinning solution prepared in step (2) is sprayed out from the spinneret with an aperture of 0.04mm to ...

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Abstract

The invention discloses a graphene and sodium alginate composite hydrogel fiber and a preparation method thereof, the preparation method comprises the following steps: (1) dissolving sodium alginate in water, adding a graphene dispersion liquid and a cross-linking agent to prepare a mixed solution, and vacuumizing and defoaming to obtain a sodium alginate spinning solution; (2) preparing a soluble starch aqueous solution, and mixing the sodium alginate spinning solution with the soluble starch aqueous solution according to a weight ratio of (7-10): 1 to obtain a mixed spinning solution; (3) sequentially performing first coagulating bath on the mixed spinning solution by a wet spinning method to obtain nascent fibers, performing ion exchange in second coagulating bath, and performing drafting forming in third coagulating bath to obtain graphene sodium alginate composite fibers; and (4) removing residual moisture in the graphene sodium alginate composite fiber, washing, and freeze-drying to obtain the graphene sodium alginate composite hydrogel fiber. The fiber not only has high hygroscopicity, but also has the performance of quickly gelling when meeting water, and overcomes the defects that the alginate fiber is low in strength and easy to break.

Description

technical field [0001] The invention belongs to the technical field of fiber manufacturing, and relates to a graphene sodium alginate composite hydrogel fiber and a preparation method thereof. Background technique [0002] Sodium alginate is a polysaccharide extracted from seaweed plants. It is derived from marine algae and is composed of β-D-mannuronic acid (M) and α-L-guluronic acid (G). Block linear polymers can be quickly dissolved in water and have many excellent properties, such as: non-toxicity, hydrophilicity, biocompatibility, biodegradability and low price, etc., so they are widely used in biomedicine field. Using sodium alginate as a raw material, fiber materials that retain the characteristics of the raw material can be produced by spinning technology and equipment. Studies have been conducted to apply it to technical fields such as wound dressings. [0003] However, the existing sodium alginate fiber material has disadvantages such as low strength and easy bre...

Claims

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Application Information

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IPC IPC(8): D01F8/18D01F1/10D01F11/00D01D5/06
CPCD01F8/18D01F1/10D01F11/00D01D5/06
Inventor 郝继海朱玉登
Owner 青岛海赛尔新材料科技有限公司