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Preparation method of polymethyl methacrylate/polyvinylpyrrolidone/graphene oxide nanofiber composite film

A polymethyl methacrylate, polyvinyl pyrrolidone technology, applied in fiber processing, filament/thread forming, textiles and paper making, etc. Problems such as poor mechanical properties, to achieve the effect of excellent hydration and good hydrophilic properties

Active Publication Date: 2020-10-16
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the poor hydrophilicity and mechanical properties of the composite material prepared by polymethyl methacrylate, it is often difficult to fit well with the tissue and support cell growth.

Method used

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  • Preparation method of polymethyl methacrylate/polyvinylpyrrolidone/graphene oxide nanofiber composite film
  • Preparation method of polymethyl methacrylate/polyvinylpyrrolidone/graphene oxide nanofiber composite film
  • Preparation method of polymethyl methacrylate/polyvinylpyrrolidone/graphene oxide nanofiber composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 1.25mg of graphene oxide, place it in 1mL N,N-dimethylformamide and ultrasonically disperse it to obtain a uniform graphene oxide solution A; weigh 2.273g of polymethyl methacrylate and 0.227g of polyethylene Pyrrolidone was dissolved in 6.9mL N,N-dimethylformamide to obtain a uniform solution B, in which the mass ratio of polyvinylpyrrolidone to polymethyl methacrylate was 10%. Add solution A to solution B, stir for 15 minutes to obtain solution C, the total concentration of polymethylmethacrylate and polyvinylpyrrolidone in solution C is 0.31g / ml. After standing for 15 minutes to defoam solution C, transfer it to a 5mL syringe, and form a film through an electrospinning instrument. The spinning temperature is 20-25°C, the relative humidity is 50-60%, the spinning voltage is 12KV, and the injection speed is 0.1 mm / min, the receiving distance is 20 cm, and the needle used for spinning is No. 21; the prepared nanofiber composite membrane is naturally dried at room ...

Embodiment 2

[0033] Weigh 1.25mg of graphene oxide, place it in 1mL N,N-dimethylformamide and ultrasonically disperse it to obtain a uniform graphene oxide solution A; weigh 2.083g of polymethyl methacrylate and 0.417g of polyethylene The pyrrolidone was dissolved in 6.9mL N,N-dimethylformamide to obtain a uniform solution B, in which the mass ratio of polyvinylpyrrolidone to polymethyl methacrylate was 20%. Add solution A to solution B and stir for 15 minutes to obtain solution C. The total concentration of polymethylmethacrylate and polyvinylpyrrolidone in solution C is 0.31 g / ml. After standing for 15 minutes to defoam solution C, transfer it to a 5mL syringe, and form a film through an electrospinning instrument. The spinning temperature is 20-25°C, the relative humidity is 50-60%, the spinning voltage is 12KV, and the injection speed is 0.1 mm / min, the receiving distance is 20 cm, and the needle used for spinning is No. 21; the prepared nanofiber composite membrane is naturally dried ...

Embodiment 3

[0036] Weigh 1.25mg of graphene oxide, place it in 1mL N,N-dimethylformamide and ultrasonically disperse it to obtain a uniform graphene oxide solution A; weigh 1.923g of polymethyl methacrylate and 0.577g of polyethylene Pyrrolidone was dissolved in 6.9mL N,N-dimethylformamide to obtain a uniform solution B, in which the mass ratio of polyvinylpyrrolidone and polymethyl methacrylate was 30%. Add solution A to solution B, stir for 15 minutes to obtain solution C, the total concentration of polymethylmethacrylate and polyvinylpyrrolidone in solution C is 0.31g / ml. After standing for 15 minutes to defoam solution C, transfer it to a 5mL syringe, and form a film through an electrospinning instrument. The spinning temperature is 20-25°C, the relative humidity is 50-60%, the spinning voltage is 12KV, and the injection speed is 0.1 mm / min, the receiving distance is 20 cm, and the needle used for spinning is No. 21; the prepared nanofiber composite membrane is naturally dried at room...

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Abstract

The invention discloses a preparation method of polymethyl methacrylate / polyvinylpyrrolidone / graphene oxide nanofiber composite film. The method comprises the following steps of 1) placing graphene oxide in N, N-dimethylformamide for ultrasonication treatment to make the graphene oxide evenly dispersed, and obtaining a graphene oxide solution A with a concentration of 1-2.5mg / mL; 2) adding polymethyl methacrylate and polyvinylpyrrolidone to the N, N-dimethylformamide, and stirring to dissolve the polymethyl methacrylate and polyvinylpyrrolidone so as to obtain a solution B; 3) adding the solution A to the solution B, and stirring to obtain a solution C; 4) subjecting the solution C to standing for defoaming, transferring to a syringe, and forming film by an electrospinning apparatus; 5) naturally drying the prepared composite film to obtain the target film. The method fully utilizes the excellent mechanical properties of the graphene oxide and the excellent hydration properties of thepolyvinylpyrrolidone, and in a simple reaction system, the nanofiber composite film with the good hydration properties and mechanical properties is prepared through an electrospinning method.

Description

technical field [0001] The invention relates to a preparation method of a polymethylmethacrylate / polyvinylpyrrolidone / graphene oxide nanofiber composite film. Background technique [0002] Polymethyl methacrylate, commonly known as plexiglass, is mainly obtained by polymerizing acrylic acid and its esters. It is easily soluble in organic solvents, non-toxic and environmentally friendly, has the advantages of light weight, low price, easy molding, good chemical stability, and excellent weather resistance, so it has a wide range of application prospects in medicine and health, building materials, and mechanical processing. . [0003] Electrospinning is a special fiber manufacturing process in which a polymer solution or melt is jet-spun in a strong electric field. The diameter of nanofibers prepared by electrospinning is usually between tens of nanometers and several micrometers, and has a large specific surface area and porosity. And the preparation process is efficient, f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D01D5/00
CPCD01D5/0007D01D5/003D01D5/0069D04H1/728
Inventor 吴庆知池玉玲
Owner WUHAN UNIV OF TECH
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