High-efficiency heavy metal adsorption and antibacterial nanofiber membrane and preparation method thereof

A nanofiber membrane, heavy metal technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing and other directions, can solve problems such as hidden dangers in life, and achieve the effect of large contact area, uniform fiber size, excellent antibacterial and heavy metal adsorption performance

Inactive Publication Date: 2020-03-13
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, bacteria, fungi, etc. have tenacious vitality, grow rapidly, and can multiply rapidly in a suitable environment, bringing hidden dangers to people's lives.

Method used

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  • High-efficiency heavy metal adsorption and antibacterial nanofiber membrane and preparation method thereof
  • High-efficiency heavy metal adsorption and antibacterial nanofiber membrane and preparation method thereof
  • High-efficiency heavy metal adsorption and antibacterial nanofiber membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step (1) First, 9.8g of PES and 0.2g of 1-vinyl-3-butylimidazolium tetrafluoroborate were added to the reaction kettle at a temperature of 60°C, and the solution was blended for 6h; then, the solution was cooled to At room temperature, pour it into a PTFE mold to lay the film, volatilize the solvent on the obtained film, dry it in vacuum for 24 hours, and irradiate it at room temperature under the irradiation dose of 30kGy in Co-γ irradiation.

[0032] Step (2) Soxhlet extraction of the grafted blend obtained by the above irradiation with methanol for 24 hours, vacuum drying, and preparation of a solution with a concentration of 30%, and then preparing the nanofiber membrane by electrospinning the solution. Denoted as 2wt%-PES nanofiber membrane.

Embodiment 2

[0034] Step (1) First, 9.6g of PES and 0.4g of 1-vinyl-3-butylimidazolium tetrafluoroborate were added to the reaction kettle at a temperature of 60°C, and the solution was blended for 6h; then, the solution was cooled to At room temperature, pour it into a PTFE mold to lay the film, volatilize the solvent on the obtained film, dry it in vacuum for 24 hours, and irradiate it at room temperature under the irradiation dose of 30kGy in Co-γ irradiation.

[0035] Step (2) Soxhlet extraction of the grafted blend obtained by the above irradiation with methanol for 24 hours, vacuum drying, and preparation of a solution with a concentration of 30%, and then preparing the nanofiber membrane by electrospinning the solution. Denoted as 4wt%-PES nanofiber membrane.

Embodiment 3

[0037] Step (1) First, 9.4g of PES and 0.6g of 1-vinyl-3-butylimidazolium tetrafluoroborate were added to the reaction kettle at a temperature of 60°C, and the solution was blended for 6h; then, the solution was cooled to At room temperature, pour it into a PTFE mold to lay the film, volatilize the solvent on the obtained film, dry it in vacuum for 24 hours, and irradiate it at room temperature under the irradiation dose of 30kGy in Co-γ irradiation.

[0038] Step (2) Soxhlet extraction of the grafted blend obtained by the above irradiation with methanol for 24 hours, vacuum drying, and preparation of a solution with a concentration of 30%, and then preparing the nanofiber membrane by electrospinning the solution. Denoted as 6wt%-PES nanofiber membrane.

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PUM

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Abstract

The invention discloses a high-efficiency heavy metal adsorption and antibacterial nanofiber membrane and a preparation method thereof. Chemically bonded ionic liquid containing unsaturated bonds is uniformly distributed on the surface of polyether sulfone through Co-gamma radiation grafting chemical modification, and an electrostatic spinning method is carried out to prepare the membrane; a massratio of the ionic liquid to the polyether sulfone is (2-11):100. The polymeric nanofiber membrane according to the invention has excellent antibacterial and heavy metal adsorption properties.

Description

technical field [0001] The invention relates to a high-efficiency heavy metal adsorption and antibacterial nanofiber membrane and a preparation method thereof, in particular to a preparation method of a nanofiber membrane uniformly distributed on the fiber surface and connected with ionic liquid through chemical bonds. Background technique [0002] Nanofiber materials with efficient heavy metal adsorption and antibacterial properties are widely used in the fields of hygiene, medical treatment and water treatment, and are generally made of polyester, polytetrafluoroethylene, polyvinylidene fluoride, polyurethane and other membrane materials. [0003] First of all, the current water pollution problems include heavy metal pollution, bacterial and microbial pollution, etc. [0004] Excessive discharge of heavy metals directly or indirectly endangers people's health. Excessive accumulation of heavy metals in plants will lead to plant death, and a large amount of heavy metals acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/033D04H3/009D01D5/00D01F6/94D01F1/10
CPCD01D5/003D01D5/0092D01F1/10D01F1/103D01F6/94D04H3/009D04H3/033D10B2401/022D10B2401/13
Inventor 李勇进倪春军郑鑫
Owner HANGZHOU NORMAL UNIVERSITY
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