CN115341301A - Sodium alginate/sodium polyacrylate/graphene oxide composite fiber and preparation method and application thereof - Google Patents
Sodium alginate/sodium polyacrylate/graphene oxide composite fiber and preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to the technical field of preparation of composite fibers. More specifically, the invention relates to a sodium alginate/sodium polyacrylate/graphene oxide composite fiber, and a preparation method and application thereof. A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fibers comprises the following steps: adding sodium polyacrylate powder and graphene oxide aqueous dispersion into sodium alginate aqueous solution, then fully stirring and mixing to prepare spinning solution, defoaming, extruding, solidifying and stretching the spinning solution in sequence to obtain nascent-state composite fiber, and then putting the nascent-state composite fiber into glutaraldehyde solution for dipping and crosslinking to obtain the sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
Description
Technical Field
The invention relates to the technical field of preparation of composite fibers. More specifically, the invention relates to a sodium alginate/sodium polyacrylate/graphene oxide composite fiber, and a preparation method and application thereof.
Background
Due to the shortage of petroleum feedstocks and problems with environmental pollution, sustainable and high-performance alternatives to renewable resources are urgently needed. The sodium alginate is a natural polymer material and has the advantages of wide source, good degradability, good biocompatibility and the like. However, the sodium alginate fiber is hard and brittle, has low mechanical property and poor antibacterial property, and greatly limits the application of the sodium alginate fiber. The sodium polyacrylate is a novel functional polymer material and an important chemical product, and has the advantages of water solubility, degradability, good biocompatibility and the like. Graphene, which is the thinnest and lightest small molecular material, is a common polymer reinforcing agent and is often used for optimizing the mechanical properties of polymer materials. However, the special molecular structure of graphene causes poor dispersibility, and the defect causes that graphene cannot be applied to the wet spinning preparation of sodium alginate.
Disclosure of Invention
The invention aims to provide the sodium alginate/sodium polyacrylate/graphene oxide composite fiber with high strength, good antibacterial property, good water absorption, good biocompatibility and good degradability, and the preparation method and the application thereof. The composite fiber is prepared by taking sodium alginate and sodium polyacrylate as raw materials, so that the source of the fiber raw materials is widened, the obtained fiber is biodegradable, the harm to the environment is avoided, the composite fiber is a green environment-friendly fiber, and the development trend of the modern society is met.
A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fibers comprises the following steps:
adding sodium polyacrylate powder and graphene oxide aqueous dispersion into sodium alginate aqueous dispersion, then fully stirring and mixing to prepare spinning solution, defoaming, extruding, solidifying and stretching the spinning solution in sequence to obtain nascent fiber, and then putting the nascent fiber into glutaraldehyde solution for dipping and crosslinking to obtain the sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
Preferably, the mass content of the sodium alginate in the sodium alginate water dispersion liquid is 3.0-5.0 wt%; the mass content of the sodium polyacrylate in the sodium alginate/sodium polyacrylate water dispersion liquid is 0.05-1.50 wt%; the mass ratio of the graphene oxide to the sodium alginate in the graphene oxide aqueous solution is 0.001-0.100;
preferably, the spinning dope is prepared by the following steps: adding sodium alginate into water, stirring for 4-8 h, adding sodium polyacrylate powder, stirring for 1-2 h, finally adding graphene oxide aqueous dispersion, and stirring for 2-3 h, wherein the stirring temperature is 0-40 ℃, so as to obtain the spinning solution.
Preferably, the coagulation treatment is carried out in an aqueous calcium chloride solution, and the temperature condition for coagulation is 20 to 60 ℃.
Preferably, the temperature condition of the stretching treatment is 30 to 80 ℃, and the stretch ratio of the stretching treatment is 1.5 to 3.5 times.
Preferably, the pH value of the glutaraldehyde solution is 1.0-6.5, and the mass content of glutaraldehyde in the glutaraldehyde solution is 1-2.5 wt%.
Preferably, the immersion temperature is 0 to 70 ℃ and the immersion time is 2 to 48 hours.
A sodium alginate/sodium polyacrylate/graphene oxide composite fiber is prepared by the preparation method.
The application of the sodium alginate/sodium polyacrylate/graphene oxide composite fiber in preparing the surgical suture line.
The invention has the following beneficial effects:
(1) Compared with pure sodium alginate fibers, the sodium alginate/sodium polyacrylate/graphene oxide composite fibers prepared by wet spinning have obviously improved mechanical properties.
(2) Under an acidic condition, glutaraldehyde reacts with hydroxyl of sodium alginate and hydroxyl of graphene oxide to generate hemiacetal, and the hemiacetal continuously reacts with the hydroxyl to generate acetal, so that the mechanical property of the composite fiber is further improved.
(3) The graphene oxide micromolecules have excellent antibacterial performance, and the prepared composite fiber has the antibacterial rate of more than 40% to staphylococcus aureus and escherichia coli.
Drawings
Fig. 1 is a scanning electron microscope image of the surface of the sodium alginate/sodium polyacrylate/graphene oxide composite fiber in embodiment 1 of the present invention.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified.
In order to achieve these objects and other advantages in accordance with the present invention, there is provided a method for preparing a sodium alginate/sodium polyacrylate/graphene oxide composite fiber, comprising adding sodium polyacrylate powder and graphene oxide aqueous dispersion to sodium alginate aqueous dispersion, wherein oxygen-containing functional groups on the surface of two-dimensional macromolecular graphene oxide are grafted to carboxyl and carboxyl functional groups of the macromolecular side chains of sodium polyacrylate and sodium alginate by weak interaction forces such as van der waals force and hydrogen bond, thereby forming a comb-like structure in which graphene oxide is suspended from the macromolecular side chains. And then fully stirring and mixing the materials to prepare the spinning solution. And (3) defoaming, extruding, solidifying, stretching, soaking and adding glutaraldehyde to perform impregnation and crosslinking on the spinning solution to obtain the sodium alginate/sodium polyacrylate/graphene oxide high-strength composite fiber.
The sodium polyacrylate is a kind of polyelectrolyte with negative charge, and has the advantages of water solubility, degradability, good biocompatibility and the like. The oxygen-containing functional group on the sodium polyacrylate and the oxygen-containing functional group on the sodium alginate are mutually wound due to the action of hydrogen bonds, and sodium alginate molecules and sodium polyacrylate molecules which are mutually wound after the sodium alginate/sodium polyacrylate composite fiber is stretched are arranged according to a certain orientation degree, so that the mechanical property of the sodium alginate/sodium polyacrylate composite fiber is improved.
Graphene oxide is the product of graphene oxidation. Compared with graphene, the graphene oxide has a plurality of oxygen-containing functional groups on the surface, and has good dispersibility in an aqueous solution. The oxygen-containing functional group on the surface of the graphene oxide is grafted to the carboxyl functional group of the high-molecular side chain of the sodium polyacrylate and the sodium alginate through weak interaction forces such as van der waals force, hydrogen bond and the like, so that a comb-shaped structure with the high-molecular side chain suspended with the graphene oxide is formed. Due to the enhancement effect of the graphene oxide under the action of multiple hydrogen bonds, the stress of the fiber is effectively dispersed and transmitted between the graphene oxide and the polymer chain of the base material under the action of an external force, so that the composite fiber shows higher tensile strength. Meanwhile, the graphene oxide has antibacterial property and good dispersibility in an aqueous solution, can be well dispersed in a sodium alginate/sodium polyacrylate solution and forms multiple hydrogen bonds and cross links with macromolecules, so that the comprehensive mechanical property is improved, and the antibacterial property is given to the composite fiber.
Glutaraldehyde is an organic compound, is colorless or light yellow transparent liquid, is soluble in water, and is easily soluble in organic solvents such as ethanol and diethyl ether. Under an acidic condition, glutaraldehyde reacts with hydroxyl of sodium alginate and hydroxyl of graphene oxide to generate hemiacetal, and the hemiacetal continuously reacts with the hydroxyl to generate acetal. According to the invention, the sodium alginate/sodium polyacrylate/graphene oxide composite fiber is soaked in glutaraldehyde acid solution for a period of time, so that the composite fiber is crosslinked, the mechanical property of the composite fiber is further improved, and the obtained treated fiber can be used as an operation suture line.
< example 1>
A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fibers comprises the following steps:
step one, weighing 1.9g of sodium alginate with the viscosity of 400mPa & s, dispersing the sodium alginate in 47mL of deionized water at the mechanical stirring speed of 300rppm, and stirring for 8 hours to obtain a sodium alginate aqueous dispersion;
step two, adding 0.25g of sodium polyacrylate with the weight-average molecular weight of 15000 into the sodium alginate aqueous dispersion, and stirring for 2 hours to obtain uniform sodium alginate/sodium polyacrylate dispersion;
step three, adding 1.247mL of 8.5mg/mL graphene oxide aqueous solution into the sodium alginate/sodium polyacrylate dispersion liquid, and stirring for 1h to obtain sodium alginate/sodium polyacrylate/graphene oxide spinning solution;
step four, centrifuging the spinning solution obtained in the step three for 6min at the rotating speed of 5000rppm to remove bubbles, extruding the spinning solution into a calcium chloride solution at 40 ℃ at the extrusion rate of 0.2mL/min through a digital metering pump, and solidifying to obtain sodium alginate/sodium polyacrylate/graphene oxide nascent fibers;
and step five, soaking the nascent fiber obtained in the step four in a water bath at 55 ℃ for 3.0 times, soaking in a 1wt% glutaraldehyde acid solution with the pH value of 5, and soaking at 25 ℃ for 15 hours to obtain the treated sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
The scanning electron microscope image of the sodium alginate/sodium polyacrylate/graphene oxide composite fiber prepared in this embodiment is shown in fig. 1.
< example 2>
A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fibers comprises the following steps:
step one, weighing 1.5g of sodium alginate with the viscosity of 400mPa & s, dispersing the sodium alginate in 48mL of deionized water at the mechanical stirring speed of 300rppm, and stirring for 4 hours to obtain a sodium alginate aqueous dispersion;
step two, adding 0.025g of sodium polyacrylate with the weight-average molecular weight of 15000 into the sodium alginate aqueous dispersion, and stirring for 2 hours to obtain uniform sodium alginate/sodium polyacrylate dispersion;
step three, adding 0.381mL of graphene oxide aqueous solution with the content of 4mg/mL into the sodium alginate/sodium polyacrylate dispersion liquid, and stirring for 1h to obtain sodium alginate/sodium polyacrylate/graphene oxide spinning solution;
step four, centrifuging the spinning solution obtained in the step three for 6min at the rotating speed of 5000rppm to remove bubbles, and extruding the spinning solution into a calcium chloride solution at the temperature of 20 ℃ through a digital metering pump at the extrusion rate of 0.2mL/min to obtain sodium alginate/sodium polyacrylate/graphene oxide nascent fibers;
and step five, soaking the nascent fiber obtained in the step four in a water bath at 30 ℃ for stretching by 1.5 times, soaking in 2wt% glutaraldehyde acid solution with the pH value of 5, and soaking the fiber for 2 hours at 25 ℃ to obtain the sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
< example 3>
A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fibers comprises the following steps:
step one, weighing 1.9g of sodium alginate with the viscosity of 400mPa & s, dispersing the sodium alginate in 46mL of deionized water at a mechanical stirring speed of 200rppm, and stirring for 8 hours to obtain a sodium alginate aqueous dispersion;
step two, adding 0.25g of sodium polyacrylate with the weight-average molecular weight of 15000 into the sodium alginate aqueous dispersion, and stirring for 2 hours to obtain uniform sodium alginate/sodium polyacrylate dispersion;
step three, adding 1.559mL of graphene oxide aqueous solution with the content of 8mg/mL into the sodium alginate/sodium polyacrylate dispersion liquid, and stirring for 1h to obtain sodium alginate/sodium polyacrylate/graphene oxide spinning solution;
step four, centrifuging the spinning solution obtained in the step three for 6min at the rotating speed of 5000rppm to remove bubbles, and extruding the spinning solution into a calcium chloride solution at 40 ℃ through a digital metering pump at the extrusion rate of 0.2mL/min to obtain sodium alginate/sodium polyacrylate/graphene oxide nascent fibers;
and step five, soaking the nascent fiber obtained in the step four in a water bath at 50 ℃ for stretching by 2.0 times, soaking in a 1wt% glutaraldehyde acid solution with the pH value of 5, and soaking the fiber for 10 hours at 25 ℃ to obtain the treated sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
< example 4>
A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fibers comprises the following steps:
step one, weighing 2.5g of sodium alginate with the viscosity of 400mPa & s, dispersing the sodium alginate in 15mL of deionized water at the mechanical stirring speed of 300rppm, and stirring for 8 hours to obtain a sodium alginate aqueous dispersion;
step two, adding 0.75g of sodium polyacrylate with the weight-average molecular weight of 15000 into the sodium alginate aqueous dispersion, and stirring for 2 hours to obtain uniform sodium alginate/sodium polyacrylate dispersion;
step three, adding 32.5mL of graphene oxide aqueous solution with the content of 10mg/mL into the sodium alginate/sodium polyacrylate dispersion liquid, and stirring for 3 hours to obtain sodium alginate/sodium polyacrylate/graphene oxide spinning solution;
step four, centrifuging the spinning solution obtained in the step two for 6min at the rotating speed of 5000rppm to remove bubbles, and extruding the spinning solution into a calcium chloride solution at the temperature of 60 ℃ through a digital metering pump at the extrusion rate of 0.2mL/min to obtain sodium alginate/sodium polyacrylate/graphene oxide nascent fibers;
and step five, soaking the nascent fiber obtained in the step four in a water bath at the temperature of 80 ℃ for 3.5 times, soaking in a 2.5wt% glutaraldehyde acid solution with the pH value of 6.5, and soaking the fiber at the temperature of 70 ℃ for 48 hours to obtain the treated sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
< comparative example 1>
A preparation method of sodium alginate fibers comprises the following steps:
step one, weighing 1.9g of sodium alginate with the viscosity of 400mPa & s, dispersing the sodium alginate in 47mL of deionized water at the mechanical stirring speed of 300rppm, and stirring for 8 hours to obtain a sodium alginate water dispersion;
and step two, centrifuging the sodium alginate aqueous dispersion for 6min at the rotating speed of 5000rppm to remove bubbles, and extruding the sodium alginate aqueous dispersion into a calcium chloride solution at 40 ℃ through a digital metering pump at the extrusion rate of 0.2mL/min for solidification to obtain the sodium alginate fibers.
< comparative example 2>
A preparation method of sodium alginate/sodium polyacrylate composite fiber comprises the following steps:
step one, weighing 1.5g of sodium alginate with the viscosity of 400mPa & s, dispersing the sodium alginate in 48mL of deionized water at the mechanical stirring speed of 300rppm, and stirring for 4 hours to obtain a sodium alginate water dispersion;
step two, adding 0.025g of sodium polyacrylate with the weight-average molecular weight of 15000 into the sodium alginate aqueous dispersion, and stirring for 2 hours to obtain uniform sodium alginate/sodium polyacrylate dispersion;
adding 0.381mL of 4mg/mL graphene oxide aqueous solution into the sodium alginate/sodium polyacrylate dispersion liquid, and stirring for 1h to obtain sodium alginate/sodium polyacrylate/graphene oxide spinning solution;
step four, centrifuging the sodium alginate/sodium polyacrylate dispersion liquid for 6min at the rotating speed of 5000rppm to remove bubbles, and extruding the sodium alginate/sodium polyacrylate dispersion liquid into a calcium chloride solution at the temperature of 20 ℃ through a digital metering pump at the extrusion rate of 0.2mL/min to obtain sodium alginate/sodium polyacrylate nascent fibers;
and step five, soaking the nascent fiber obtained in the step four in a water bath at the temperature of 30 ℃ for stretching by 1.5 times, soaking in an acid solution of 2wt% glutaraldehyde with the pH value of 1, and soaking the fiber for 2 hours at the temperature of 25 ℃ to obtain the sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
< comparative example 3>
A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fibers comprises the following steps:
step one, weighing 1.5g of sodium alginate with the viscosity of 400mPa & s, dispersing the sodium alginate in 48mL of deionized water at the mechanical stirring speed of 300rppm, and stirring for 4 hours to obtain a sodium alginate aqueous dispersion;
step two, adding 0.025g of sodium polyacrylate with the weight-average molecular weight of 15000 into the sodium alginate aqueous dispersion, and stirring for 2 hours to obtain a uniform sodium alginate/sodium polyacrylate dispersion;
adding 0.381mL of 4mg/mL graphene oxide aqueous solution into the sodium alginate/sodium polyacrylate dispersion liquid, and stirring for 1h to obtain sodium alginate/sodium polyacrylate/graphene oxide spinning solution;
and step four, centrifuging the spinning solution obtained in the step three for 6min at the rotating speed of 5000rppm to remove bubbles, and extruding the spinning solution into a calcium chloride solution at the temperature of 20 ℃ through a digital metering pump at the extrusion rate of 0.2mL/min to obtain the sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
< comparative example 4>
Comparative example 4 is different from example 1 in that 1mL of glutaraldehyde was added to 1.247mL of an aqueous graphene oxide solution in step three, no soaking was performed after stretching in step five, and the other steps were the same as example 1.
A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fibers comprises the following steps:
step one, weighing 1.9g of sodium alginate with the viscosity of 400mPa & s, dispersing the sodium alginate in 47mL of deionized water at the mechanical stirring speed of 300rppm, and stirring for 8 hours to obtain a sodium alginate aqueous dispersion;
step two, adding 0.25g of sodium polyacrylate with the weight-average molecular weight of 15000 into the sodium alginate aqueous dispersion, and stirring for 2 hours to obtain a uniform sodium alginate/sodium polyacrylate dispersion;
step three, adding 1.247mL of 8.5mg/mL graphene oxide aqueous solution into the sodium alginate/sodium polyacrylate dispersion liquid, stirring for 1h, and adding 1mL of glutaraldehyde to obtain sodium alginate/sodium polyacrylate/graphene oxide spinning solution;
step four, centrifuging the spinning solution obtained in the step three for 6min at the rotating speed of 5000rppm to remove bubbles, extruding the spinning solution into a calcium chloride solution at 40 ℃ at the extrusion rate of 0.2mL/min through a digital metering pump, and solidifying to obtain sodium alginate/sodium polyacrylate/graphene oxide nascent fibers;
and step five, immersing the nascent fiber obtained in the step four into a water bath at the temperature of 55 ℃ and stretching by 3.0 times to obtain the sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
The composite fibers prepared in examples 1 to 4 and the composite fibers of comparative examples 1 to 4 were subjected to a bacteriostatic rate test and a tensile strength test, wherein the bacteriostatic rate was counted by using a plate counting method, and the test results are shown in table 1. It should be noted that the method for testing the bacteriostatic rate and the tensile strength of the composite fiber is applicable to the prior art.
TABLE 1
As can be seen from the table above, the composite fibers of examples 1 to 4 have better bacteriostatic rate and mechanical properties than those of comparative examples 1 to 4. As can be seen from examples 1-4 and comparative example 1, the composite fiber formed by combining sodium alginate and sodium polyacrylate has good mechanical properties. As can be seen from examples 1 to 4 and comparative example 2, the composite fiber formed by combining the graphene oxide with sodium alginate and sodium polyacrylate has good mechanical properties. From examples 1 to 4 and comparative example 2, it can be seen from examples 1 to 4 and comparative example 3 that the mechanical properties of the sodium alginate/sodium polyacrylate/graphene oxide composite fibers are improved to a certain extent after cross-linking by glutaraldehyde. As can be seen from examples 1 to 4 and comparative example 4, the sodium alginate/sodium polyacrylate/graphene oxide is better in cross-linking mechanical property after being stretched in a wet spinning process by glutaraldehyde and then being cross-linked than the sodium alginate/sodium polyacrylate/graphene oxide is in a spinning solution. As can be seen from examples 1 to 4 and comparative examples 1 and 2, the composite fiber prepared by the preparation steps of the invention has good bacteriostatic effect.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (9)
1. A preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fiber is characterized by comprising the following steps:
adding sodium polyacrylate powder and graphene oxide aqueous dispersion into sodium alginate aqueous solution, then fully stirring and mixing to prepare spinning solution, defoaming, extruding, solidifying and stretching the spinning solution in sequence to obtain nascent-state composite fiber, and then putting the nascent-state composite fiber into glutaraldehyde solution for dipping and crosslinking to obtain the sodium alginate/sodium polyacrylate/graphene oxide composite fiber.
2. The preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fiber according to claim 1, wherein the mass content of sodium alginate in the sodium alginate aqueous solution is 3.0-5.0 wt%; the mass content of the sodium polyacrylate in the sodium alginate/sodium polyacrylate aqueous solution is 0.05-1.50 wt%; the mass ratio of graphene oxide to sodium alginate in the graphene oxide aqueous dispersion is 0.001-0.100.
3. The preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fiber according to claim 1, wherein the spinning solution is prepared by the following steps: adding sodium alginate into water, stirring for 4-8 h, adding sodium polyacrylate powder, stirring for 1-2 h, finally adding graphene oxide aqueous dispersion, and stirring for 2-3 h, wherein the stirring temperature is 0-40 ℃, and thus obtaining the spinning solution.
4. The method for preparing sodium alginate/sodium polyacrylate/graphene oxide composite fiber according to claim 1, wherein the solidification treatment is carried out in calcium chloride aqueous solution, and the temperature condition of the solidification is 20-60 ℃.
5. The method for preparing sodium alginate/sodium polyacrylate/graphene oxide composite fiber according to claim 1, wherein the temperature condition of the stretching treatment is 30-80 ℃, and the drawing rate of the stretching treatment is 1.5-3.5 times.
6. The preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fiber according to claim 1, wherein the pH value of the glutaraldehyde solution is 1.0-6.5, and the mass content of glutaraldehyde in the glutaraldehyde solution is 1-2.5 wt%.
7. The preparation method of sodium alginate/sodium polyacrylate/graphene oxide composite fiber according to claim 6, wherein the impregnation temperature is 0-70 ℃ and the time is 2-48 h.
8. A sodium alginate/sodium polyacrylate/graphene oxide composite fiber is characterized by being prepared by the preparation method of any one of claims 1 to 7.
9. The application of the sodium alginate/sodium polyacrylate/graphene oxide composite fiber of claim 8 in preparation of a surgical suture.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631118A (en) * | 2015-01-22 | 2015-05-20 | 浙江理工大学 | Absorbable antibacterial alginate fibers |
| CN111074380A (en) * | 2019-12-31 | 2020-04-28 | 杭州高烯科技有限公司 | Graphene oxide/sodium polyacrylate stretching fluid and application thereof in preparation of graphene |
| US20200330641A1 (en) * | 2019-04-17 | 2020-10-22 | Shulan Jiang | Biodegradable graphene oxide biocomposite fibrous membrane, preparation method and uses thereof |
| CN112226848A (en) * | 2020-09-03 | 2021-01-15 | 方大炭素新材料科技股份有限公司 | Chitosan-graphene oxide composite fiber and preparation method and application thereof |
| CN114045575A (en) * | 2021-12-06 | 2022-02-15 | 青岛海赛尔新材料科技有限公司 | Graphene sodium alginate composite hydrogel fiber and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631118A (en) * | 2015-01-22 | 2015-05-20 | 浙江理工大学 | Absorbable antibacterial alginate fibers |
| US20200330641A1 (en) * | 2019-04-17 | 2020-10-22 | Shulan Jiang | Biodegradable graphene oxide biocomposite fibrous membrane, preparation method and uses thereof |
| CN111074380A (en) * | 2019-12-31 | 2020-04-28 | 杭州高烯科技有限公司 | Graphene oxide/sodium polyacrylate stretching fluid and application thereof in preparation of graphene |
| CN112226848A (en) * | 2020-09-03 | 2021-01-15 | 方大炭素新材料科技股份有限公司 | Chitosan-graphene oxide composite fiber and preparation method and application thereof |
| CN114045575A (en) * | 2021-12-06 | 2022-02-15 | 青岛海赛尔新材料科技有限公司 | Graphene sodium alginate composite hydrogel fiber and preparation method thereof |
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