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Graphene-alginate composite nanofibers, preparation method and application thereof

A technology of composite nanofibers and alginate, 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 small diameter, prevention of aggregation, and large specific surface area

Active Publication Date: 2020-07-03
青岛海赛尔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a graphene alginate composite nanofiber and its preparation method and application. The graphene alginate composite nanofiber prepared by the present invention not only has good hygroscopicity, but also has anticoagulation properties , and overcome the shortcomings of low strength and easy breakage of seaweed fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of graphene alginate composite nanofiber:

[0030] Place the graphene in the mixed extract of honeysuckle and Artemisia argyi for 12 hours, dry it, then weigh the dried graphene and N, N-dimethylformamide, and prepare graphite with a graphene concentration of 11mg / g ethylene dispersion; weigh calcium chloride, prepare calcium chloride solution;

[0031] Dissolve sodium alginate and polyethylene oxide in ethanol solution, then add calcium chloride solution dropwise until the content of calcium chloride in the mixed solution is 5% of the mass of sodium alginate, stir for 30min after the dropwise addition, and then add Graphene dispersion liquid and ethylene glycol diglycidyl ether, stir and disperse evenly, the obtained sodium alginate content is 3%, the mixed solution that polyoxyethylene content is 7%, and wherein, the consumption of graphene is 4% of raw material components %, the consumption of ethylene glycol diglycidyl ether is 1% of th...

Embodiment 2

[0037] A kind of preparation method of graphene alginate composite nanofiber:

[0038] Graphene is placed in the honeysuckle extract solution and ultrasonically soaked for 12 hours, dried, and then weighed and weighed graphene and N,N-dimethylformamide after drying, and prepared a graphene dispersion with a graphene concentration of 11mg / g. Liquid; Take calcium chloride by weighing, prepare calcium chloride solution;

[0039]Sodium alginate and carboxymethyl cellulose were dissolved in ethanol solution, and then calcium chloride solution was added dropwise until the content of calcium chloride in the mixed solution was 1% of the mass of sodium alginate, and stirred for 30 minutes after the addition was completed, Then add graphene dispersion liquid, hydroxyethyl methacrylate and ethylene glycol dimethacrylate, stir and disperse evenly, make the mixed solution that sodium alginate content is 6%, carboxymethyl cellulose content is 5%, Wherein, the consumption of graphene is 1% ...

Embodiment 3

[0045] A kind of preparation method of graphene alginate composite nanofiber:

[0046] Place graphene in the mixed extract of honeysuckle and Folium Artemisiae Argyi for 12h, dry it, then weigh the dried one, weigh graphene and N, N-dimethylformamide, prepare graphene concentration as 11mg / The graphene dispersion liquid of g; Take calcium chloride by weighing, prepare calcium chloride solution;

[0047] Sodium alginate, polyvinyl alcohol and carboxymethyl cellulose were dissolved in ethanol solution, and then calcium chloride solution was added dropwise until the content of calcium chloride in the mixed solution was 3% of the mass of sodium alginate. Stir for 30 minutes, then add graphene dispersion and hydroxyethyl methacrylate, stir and disperse evenly, and prepare a mixture with a sodium alginate content of 2%, a polyvinyl alcohol content of 4%, and a carboxymethyl cellulose content of 2%. Solution, wherein, the consumption of graphene is 5% of raw material component, and...

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Abstract

The invention belongs to the technical field of fiber manufacturing, and relates to a graphene and alginate composite nanofiber and a preparation method and application thereof. The preparation methodcomprises the steps that sodium alginate and water-soluble polymers are dissolved in an ethanol solution, and a calcium chloride solution is dropwise added; graphene dispersion liquid and a cross-linking agent are added, and a mixed solution with 2% to 6% of sodium alginate is prepared; the mixed solution is divided into two parts, citric acid and sodium carbonate are added to the two parts of mixed solution respectively, uniform stirring and dispersing are carried out, and two different polymer solutions are prepared; the polymer solutions are added to a liquid storage tank separately, spinning is carried out on the same collector, and a salt composite nanofiber precursor is obtained; the precursor is placed in a constant-temperature environment of 60 DEG C to 100 DEG C for 8 h to 24 h,and the nanofiber is obtained. The graphene and alginate composite nanofiber has good hygroscopicity, humidity responsiveness and curdling resisting performance, and the defects that the nanofiber islow in strength and likely to break are overcome.

Description

technical field [0001] The invention belongs to the technical field of fiber manufacturing, and relates to a graphene-alginate composite nanofiber and a preparation method and application thereof. Background technique [0002] Graphene is a simple carbon substance composed of carbon atoms arranged in a hexagonal lattice, and its structure is very stable. Its perfect lattice structure is often mistaken for rigidity, but it is not. The connection between each carbon atom of graphene is very flexible, and when an external mechanical force is applied, the surface of the carbon atom bends and deforms. In this way, carbon atoms do not need to be rearranged to adapt to external forces, which also ensures the stability of the graphene structure, making graphene harder than diamond and 100 times stronger than the best steel in the world. Stretch like rubber. Graphene has been proven to be the thinnest substance ever discovered in the world, with a thickness of only 0.335 nanometer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D04H1/728D01F1/10D01F8/02D01F8/10D01F8/16D01F8/18
Inventor 郝继海
Owner 青岛海赛尔新材料科技有限公司
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