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Preparation method and application of composite antibacterial electrostatic spinning nanofiber membrane

An air filter material and nanofiber technology, which can be used in applications, dispersed particle filtration, clothing, etc., can solve the problems of antibacterial masks and poor filtering effects, and achieve the effects of simple and easy preparation, good air permeability, and avoidance of detachment

Active Publication Date: 2018-12-14
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing an antibacterial electrospun nanofiber filter material under the situation that the current masks have poor antibacterial and filtering effects

Method used

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  • Preparation method and application of composite antibacterial electrostatic spinning nanofiber membrane
  • Preparation method and application of composite antibacterial electrostatic spinning nanofiber membrane
  • Preparation method and application of composite antibacterial electrostatic spinning nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Prepare 8% polyvinyl alcohol aqueous solution and 1% chitosan acetic acid solution, stir and mix them evenly at a mass fraction ratio of 1:1, and then add them to the syringe. The output voltage of the high-voltage power supply is 20KV, the needle and the receiver Under the conditions of a device distance of 10 cm and a flow rate of 0.3 mL / h, the electrospinning machine is used for spinning to obtain the first nanofiber membrane.

[0031] The copolymer sample is dissolved in an 8% polyvinyl alcohol aqueous solution at a ratio of 1:1, and the fiber membrane obtained in the above steps is used as the collecting matrix to perform electrostatic spinning to obtain two-layer fiber membrane.

[0032] The same method for preparing the spinning solution for the first layer of spinning membrane, using the two-layer fiber membrane obtained in the above steps as the collection matrix, spinning to obtain a three-layer fiber membrane.

[0033] The three-layer nanofiber membrane obtained by ...

Embodiment 2

[0035] Prepare 9% polyvinyl alcohol aqueous solution and 2% chitosan acetic acid solution, stir and mix them evenly at a mass fraction ratio of 2:1, and then add them to the syringe. The output voltage of the high-voltage power supply is 25KV, the needle and the receiver The first nanofiber membrane was obtained by spinning using an electrospinning machine under the conditions of a device distance of 15 cm and a flow rate of 0.4 mL / h.

[0036] The copolymer sample was dissolved in a 9% polyvinyl alcohol aqueous solution at a ratio of 2:1, and the fiber membrane obtained in the above step was used as the collecting matrix to perform electrostatic spinning to obtain two-layer fiber membrane.

[0037] The same method for preparing the spinning solution for the first layer of spinning membrane, using the two-layer fiber membrane obtained above as the collecting matrix, spinning to obtain a three-layer fiber membrane.

[0038] The three-layer nanofiber membrane obtained by spinning in the...

Embodiment 3

[0040] Prepare 10% polyvinyl alcohol aqueous solution and 3% chitosan acetic acid solution, stir and mix them at a mass fraction ratio of 3:1, and then add them to the syringe. The output voltage of the high-voltage power supply is 15KV, the needle and the receiver The first nanofiber membrane was obtained by spinning using an electrospinning machine under the conditions of a device distance of 5 cm and a flow rate of 0.5 mL / h.

[0041] The copolymer sample is dissolved in a 10% polyvinyl alcohol aqueous solution at a ratio of 3:1, and the fiber membrane obtained in the above steps is used as the collecting matrix to perform electrostatic spinning to obtain two-layer fiber membrane.

[0042] The same method for preparing the spinning solution for the first layer of spinning membrane, using the two-layer fiber membrane obtained above as the collecting matrix, spinning to obtain a three-layer fiber membrane.

[0043] The three-layer nanofiber membrane obtained by spinning in the above ...

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Abstract

The invention discloses a preparation method and application of a composite antibacterial electrostatic spinning nanofiber membrane. The preparation method is used for an antibacterial air filtering material for masks. The material is prepared by taking polyvinyl alcohol, chitosan, vinyl amine-copolymerized-3-allyl-5,5-dimethyl hydantoin as raw materials. The preparation method comprises the following steps: uniform blend spinning is carried out on the polyvinyl alcohol and the chitosan to obtain a material as an innermost-layer nanofiber membrane and an outermost-layer nanofiber membrane, andan auxiliary antibacterial effect and a mechanical supporting effect are achieved; an intermediate layer is prepared by carrying out blend spinning on the polyvinyl alcohol and the vinyl amine-copolymerized-3-allyl-5,5-dimethyl hydantoin, and a main antibacterial effect is achieved; and a three-layer nanofiber membrane obtained by spinning is placed in glutaraldehyde steam for cross-linking treatment. The preparation method disclosed by the invention is simple and feasible and is controllable in condition, and the composite antibacterial electrostatic spinning nanofiber membrane is excellentin interception effect and sterilization effect and has important value and significance in the field of antibacterial filtering materials for masks.

Description

Technical field [0001] The invention belongs to the field of biomedical materials, and specifically relates to the preparation of a multilayer nanofiber air filter material with antibacterial function. Background technique [0002] Today’s rapid economic development and the ever-increasing living standards of the people have also brought serious environmental problems. Air pollution is becoming more and more serious. There are a large number of dust particles and bacteria and viruses in the dirty atmosphere, which spread with the air flow, causing great trouble to people's health. [0003] Electrospinning technology is that the polymer solution is charged in a high-voltage electric field, the surface tension of the polymer solution is overcome by electrostatic attraction, and the nano-diameter fiber is obtained by jet stretching. The nanofibers obtained by electrospinning have the characteristics of large surface area, low porosity, and small diameter. They are a very good filter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/12B01D69/02B01D67/00B01D46/54A41D13/11
CPCA41D13/1153A41D13/1192B01D46/543B01D67/0002B01D67/0006B01D69/02B01D69/12B01D69/125B01D2323/30B01D2323/39B01D2325/48
Inventor 马贵平张璐聂俊吕金艳
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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