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Preparation method of conductive graphene nanofiber membrane

A nanofiber membrane, conductive nanotechnology, applied in fiber processing, textiles and papermaking, non-woven fabrics, etc., can solve the problems of small preparation scale, poor biocompatibility, limited application of nanomaterials, etc., to overcome biocompatibility Effects of sexual influence, mild reaction conditions, and simple production process

Inactive Publication Date: 2015-09-02
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of these graphene nanomaterials and the uneven dispersion of graphene lead to the inability to fully express the excellent properties of graphene, which limits the development and application of graphene.
Although some researchers have prepared graphene fibers stacked by graphene sheets with a core-shell structure, the diameter of the fibers is limited to above the micron level, and the scale of preparation is not large.
[0005] At the same time, a large number of oxidants and soft chemical templates are used in the preparation process of nanomaterials in the prior art, and these substances are difficult to clean up completely, resulting in poor biocompatibility, which severely limits the application of nanomaterials in the field of biomedical engineering

Method used

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  • Preparation method of conductive graphene nanofiber membrane
  • Preparation method of conductive graphene nanofiber membrane
  • Preparation method of conductive graphene nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Using polyvinyl chloride as raw material to make graphene conductive nanofiber membrane

[0031] (1) Dissolve 0.2 g of polyvinyl chloride in a mixture of tetrahydrofuran and N,N dimethylformamide with a volume ratio of 8:2 to prepare a spinning solution, and the mass fraction of the spinning material in the total system is 1%. , and under magnetic stirring until the solution was clear and homogeneous, then centrifuged at 1000 rpm for 5 minutes to remove air bubbles in the solution.

[0032] (2) Electrospinning is carried out in a self-made electrospinning device. Electrospinning parameters: the inner diameter of the spinneret is 0.22mm, the receiving distance is 10cm at a voltage of 15KV, and the electrospinning is carried out at a propulsion speed of 1.0mL / h. The fibers were spun onto filter paper, and the volume of each fiber membrane spinning solution was 1.0 mL. The collected electrospun nanofiber membranes were dried under vacuum at room temperature for ...

Embodiment 2

[0036] Example 2 Using polyacrylonitrile as raw material to make graphene conductive nanofiber membrane

[0037] (1) Dissolve 0.85 g of polyacrylonitrile in a mixture of tetrahydrofuran and N,N dimethylformamide with a volume ratio of 6:2 to prepare a spinning solution, and the mass fraction of the spinning material in the total system is 5%. , and under magnetic stirring until the solution was clear and homogeneous, then centrifuged at 1000 rpm for 5 minutes to remove air bubbles in the solution.

[0038] (2) Conduct electrospinning in a homemade electrospinning device, electrospinning parameters: the inner diameter of the spinneret is 0.22mm, the receiving distance is 10cm at a voltage of 12KV, and the electrospinning is carried out at a propulsion speed of 0.8mL / h. The fibers were spun onto filter paper, and the volume of each fiber membrane spinning solution was 1.0 mL. The collected electrospun membranes were vacuum-dried at room temperature for 24 hours for later use. ...

Embodiment 3

[0042] Example 3 Using polylactic acid-glycolic acid copolymer as raw material to make graphene conductive nanofiber membrane

[0043] (1) Dissolving 1.35 grams of polylactic acid-glycolic acid copolymer in a mixture of tetrahydrofuran (THF) and N,N dimethylformamide (DMF) with a volume ratio of 4:2 is configured as a spinning solution, and spinning The mass fraction of the material in the total system is 10%, and the solution is clarified and homogeneous under magnetic stirring, and then centrifuged at 1000 rpm for 5 minutes to remove air bubbles in the solution.

[0044] (2) Electrospinning is carried out in a self-made electrospinning device. Electrospinning parameters: the inner diameter of the spinneret is 0.22mm, the receiving distance is 10cm under the voltage of 10KV, and the electrospinning is carried out at a propulsion speed of 0.5mL / h. The fibers were spun onto filter paper, and the volume of each fiber membrane spinning solution was 1.0 mL. The collected electros...

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Abstract

The invention discloses a preparation method of a conductive graphene nanofiber membrane. The preparation method comprises the following steps: preparing an electrospinning nanofiber membrane by adopting electrostatic spinning equipment; performing ultrasonication on oxidized graphene by adopting ultrasound equipment and a cell disruption instrument, performing suction filtration on the electrospinning nanofiber membrane, and drying; performing reduction on the prepared conductive oxidized graphene nanofiber membrane by using a reducing agent, and then drying, so as to obtain the conductive graphene nanofiber membrane. According to the preparation method of the conductive graphene nanofiber membrane, provided by the invention, oxidized graphene is used for preparing the conductive oxidized graphene nanofiber membrane, and then the conductive oxidized graphene nanofiber membrane is subjected to reduction to prepare the conductive graphene nanofiber membrane with enhanced electrical conductivity.

Description

technical field [0001] The invention belongs to the technical field of electrospinning, and in particular relates to the preparation of a graphene conductive nanofiber film. Background technique [0002] In recent years, with the development of material science, various natural or synthetic conductive materials are used to prepare conductive nanofibers to achieve their best performance and be applied in the field of biomedicine. At present, the exploration of preparation methods and processes of functionalized conductive nanofibers with specific properties and suitable application ranges has received extensive attention in the field of fiber material preparation. [0003] During the preparation of conductive nanofibers, the selection of materials has become a key factor in the preparation of conductive nanofibers. graphene is sp 2 The carbon material in which hybridized carbon atoms are closely packed into a single-layer two-dimensional honeycomb lattice structure is the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D04H1/728
Inventor 冯章启李家城赵宾
Owner NANJING UNIV OF SCI & TECH
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