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Preparation method of pvp/pan nanocomposite fiber

A nanocomposite fiber and composite solution technology, which is applied in fiber treatment, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems that the fiber cannot form a uniform hollow structure, the specific surface area of ​​the nanofiber membrane is large, and the surface morphology of the fiber is not good. , to achieve the effects of easy large-scale production, good adsorption capacity, and uniform diameter distribution

Active Publication Date: 2020-06-26
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the composite nanofibers prepared by PVP and PAN in the prior art, or the surface morphology of the fibers is not good, or the prepared fibers cannot form a uniform hollow structure; there is an urgent need for a preparation method to aggregate the nanocomposite fibers together. Nanofibrous membrane has the advantages of large specific surface area, high porosity and good permeability

Method used

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  • Preparation method of pvp/pan nanocomposite fiber
  • Preparation method of pvp/pan nanocomposite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: The preparation method of PAN powder

[0041] Specific steps are as follows:

[0042] (1) Mix acrylonitrile and deionized water at a mass ratio of 8:100;

[0043] (2) Add itaconic acid to the mixed liquid obtained in step (1), wherein the molar ratio of itaconic acid to acrylonitrile is 1:99, stir magnetically for 0.5 hours, and heat up to 50°C;

[0044] (3) Add the perinitiator ammonium sulfate or potassium persulfate to the mixed solution obtained in step (2) to react, and stop after 2 hours;

[0045] (4) Filter the mixed solution obtained in step (3) to obtain a white powder, which is washed three times with deionized water;

[0046] (5) Dry the powder obtained in step (4) in a blast oven at 50°C for 2 hours to obtain PAN powder.

Embodiment 2

[0047] Embodiment 2: A kind of preparation method of PVP / PAN nanocomposite fiber

[0048] Specific steps are as follows:

[0049] (1) Mix PVP and N, N-dimethylformamide (DMF) at a mass ratio of 2:100, and stir magnetically for 1 hour;

[0050] (2) Add the PAN powder described in Example 1 into the above mixed solution, the mass ratio of PAN and DMF is 8:100, and stir magnetically for 5 hours;

[0051] (3) Put the above mixed solution containing PVP and PAN powder at room temperature for 18 hours to obtain a uniformly mixed composite spinning solution;

[0052] (4) Extract the PVP / PAN composite spinning solution with a syringe, fix it on the electrospinning device, control the electrospinning voltage to 10kV, and inject the injection speed to 0.2mm / min. The receiving device is wrapped with aluminum foil on the receiving drum to receive nanofibers. The distance between the spinning needle and the receiving drum is 15cm, the parameters of the receiving drum are 100 rpm, the ind...

Embodiment 3

[0054] Embodiment 3: A kind of preparation method of PVP / PAN nanocomposite fiber

[0055] Specific steps are as follows:

[0056] (1) Mix PVP and DMF at a mass ratio of 4:100, and stir magnetically for 1 hour;

[0057] (2) Add the PAN powder described in Example 1 into the above mixed solution, the mass ratio of PAN and DMF is 8:100, and stir magnetically for 5 hours;

[0058](3) Put the above mixed solution containing PVP and PAN powder at room temperature for 18 hours to obtain a uniformly mixed composite spinning solution;

[0059] (4) Extract the PVP / PAN composite spinning solution with a syringe, fix it on the electrospinning device, control the electrospinning voltage to 10kV, and inject the injection speed to 0.2mm / min. The receiving device is wrapped with aluminum foil on the receiving drum to receive nanofibers. The distance between the spinning needle and the receiving drum is 15cm, the parameters of the receiving drum are 100 rpm, the indoor temperature is 28°C, a...

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Abstract

The invention discloses a preparation method of a PVP / PAN nano-composite fiber. The preparation method comprises the following steps: (1) weighing PVP and PAN powder prepared by adopting a water-phaseprecipitation in situ polymerization method, and then weighing a DMP solvent; (2) adding the weighed PVP into the DMF solvent to obtain a composite solution, and carrying out magnetic stirring for 1hour; (3) adding the weighed PAN powder into the composite solution in the step (2), and carrying out magnetic stirring for 5 hours; (4) carrying out static mixing for 18 hours to obtain a uniformly mixed composite spinning solution; (5) carrying out electrostatic spinning on the composite spinning solution in the step (4), and collecting nano-composite fiber; and (6) putting the nano-composite fiber in the step (5) into a blast drying oven at the temperature of 50 DEG C for 2 hours so as to obtain the PVP / PAN nano-composite fiber. The method is simple in operation, the raw materials are cheapand easily obtained, and the obtained nano-composite fiber is uniform in diameter distribution and is easy for large-scale production.

Description

technical field [0001] The invention relates to the technical field of preparing nanocomposite fibers, in particular to a method for preparing PVP / PAN nanocomposite fibers. Background technique [0002] Electrospinning is one of the main methods for preparing nanofibers, which can obtain continuous long fibers. This kind of nanofiber has a small diameter and a large specific surface area, and has a wide range of potential applications in industrial fields, biological fields, and the like. Polymers with different properties are dissolved together to obtain a composite spinning solution, and nanocomposite fibers with various properties can be obtained by using electrospinning technology, such as porous fibers and hollow fibers. [0003] Polyvinylpyrrolidone (PVP) is a non-ionic polymer material. It contains strong polar amide groups in its molecular structure, which makes it have good hydrophilic and lipophilic amphiphilic properties, and is very easy to dissolve in water and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/54D01F1/10C08F220/46C08F222/02D01D5/00
CPCC08F220/46D01D5/003D01F1/10D01F6/54C08F222/02
Inventor 张海龙权玲杨中正仝玉萍陈渊召刘焕强石风俊
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER