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Polyvinyl pyrrolidone hollow nanofiber and preparation method thereof

A technology of polyvinylpyrrolidone and nanofibers, which is applied in the fields of hollow filament manufacturing, fiber treatment, fiber chemical characteristics, etc., and can solve problems such as unapplicable, difficult, and toxic

Pending Publication Date: 2021-10-22
中化(宁波)润沃膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention involves the electrospinning method, but it needs to go through a series of processes such as high temperature oxidation and heat preservation in the follow-up, and the prepared hollow nanofiber is a composite material, and PVP is not its main component, which is highly toxic and cannot be applied in biomedicine and filtration protection. product area
[0010] There is no literature report on the preparation of single polyvinylpyrrolidone hollow nanofibers by electrospinning, because the mechanical strength of polyvinylpyrrolidone is significantly lower than that of rigid materials such as ceramics and metals, and it is difficult to prepare single polyvinylpyrrolidone hollow nanofibers by electrospinning larger

Method used

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  • Polyvinyl pyrrolidone hollow nanofiber and preparation method thereof
  • Polyvinyl pyrrolidone hollow nanofiber and preparation method thereof
  • Polyvinyl pyrrolidone hollow nanofiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0098] Use a mass average molecular weight of 1300,000g·mol -1 Polyvinylpyrrolidone (PVP) was used for hollow fiber electrospinning. Add PVP powder to absolute ethanol, stir continuously at room temperature (22-24°C) for half an hour to form a polyvinylpyrrolidone solution with a concentration of 8wt / v% as the shell solution, and use paraffin oil as the core layer liquid for electrostatic Preparation of spun polyvinylpyrrolidone hollow nanofibers.

[0099] Electrospinning was performed using coaxial needles. The experimental setup consists of two pumps, two plastic syringes and coaxial needles. The coaxial needle is composed of an inner needle and an outer needle, the polyvinylpyrrolidone solution is injected into the outer needle, and paraffin oil is injected into the inner needle. A pump is used to feed the inner needle with a flow rate of 5 μl min -1 ; Another pump is used for the feed rate supply of the outer needle, the flow rate is 10 μl min -1 . During the electro...

Embodiment 2

[0102] Use a mass average molecular weight of 1300,000g·mol -1 Polyvinylpyrrolidone (PVP) was used for hollow fiber electrospinning. Add PVP powder to absolute ethanol, stir continuously at room temperature (22-24°C) for half an hour to form a polyvinylpyrrolidone solution with a concentration of 8wt / v% as the shell solution, and use paraffin oil as the core layer liquid for electrostatic Preparation of spun polyvinylpyrrolidone hollow nanofibers.

[0103] Electrospinning was performed using coaxial needles. The experimental setup consists of two pumps, two plastic syringes and coaxial needles. The coaxial needle is composed of an inner needle and an outer needle, the polyvinylpyrrolidone solution is injected into the outer needle, and paraffin oil is injected into the inner needle. A pump is used to feed the inner needle at a flow rate of 1 μl min -1 ; Another pump is used for the feed rate supply of the outer needle, the flow rate is 10 μl min -1 . During the electrosp...

Embodiment 3

[0107] Use a mass average molecular weight of 1300,000g·mol -1 Polyvinylpyrrolidone (PVP) was used for hollow fiber electrospinning. Add PVP powder to absolute ethanol, and stir continuously at room temperature (22-24°C) for half an hour to form a polyvinylpyrrolidone solution with a concentration of 10wt / v%, which is used as the shell solution, and paraffin oil is used as the core layer liquid for electrostatic Preparation of spun polyvinylpyrrolidone hollow nanofibers.

[0108] Electrospinning was performed using coaxial needles. The experimental setup consists of two pumps, two plastic syringes and coaxial needles. The coaxial needle is composed of an inner needle and an outer needle, the polyvinylpyrrolidone solution is injected into the outer needle, and paraffin oil is injected into the inner needle. A pump is used to feed the inner needle with a flow rate of 5 μl min -1 ; Another pump is used for the feed rate supply of the outer needle, the flow rate is 10 μl min ...

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Abstract

The present invention provides a hollow nanofiber consisting of a single polymer polyvinylpyrrolidone. The fiber material is green, non-toxic and environment-friendly, and the inner diameter of the fiber material is as small as 20-50 nanometers. The invention further provides a preparation method of the superfine, green, non-toxic and environment-friendly polyvinylpyrrolidone hollow nanofiber through electrostatic spinning. The preparation method is simple in process, and is suitable for the fields of biological medicines, filtering protection products, skin care cosmetics and the like in which other same / similar products cannot be applied.

Description

technical field [0001] The invention belongs to the field of nanofibers, and in particular relates to polyvinylpyrrolidone hollow nanofibers and a preparation method thereof. Background technique [0002] Nanofibers can be prepared in a variety of ways, including stretching, phase separation, template synthesis, self-assembly, and electrospinning, among others. Stretching is to use a micromanipulator to immerse a micropipette with a diameter of several micrometers into the droplet, draw the micropipette out of the liquid and hold it at about 1×10 -4 m·s -1 After moving at a speed of , the nanofibers are drawn out. The stretching of the nanofibers can be repeated on one droplet to produce many fibers, a disadvantage of this method is that the process is discontinuous. The template synthesis process uses a mold to produce the desired nanofibers. The principle of template synthesis is to add a polymer solution into the membrane pores. For nanofiber production, the template...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/26D01F8/10D01F8/18D01F1/08D01D5/00A61K8/02A61K8/81A61K9/00A61K47/32A61Q19/00B01D71/44
CPCD01F6/26D01F8/10D01F8/18D01F1/08D01D5/003D01D5/0061A61K9/0092A61K47/32A61K8/027A61K8/817A61Q19/00B01D71/44A61K2800/10
Inventor 李双武曹春朱建军
Owner 中化(宁波)润沃膜科技有限公司
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