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Antibacterial hollow-fiber membrane, preparation method and application

A fiber membrane, hollow technology, applied in the field of production of the hollow fiber membrane, to achieve the effect of simple preparation process

Inactive Publication Date: 2007-05-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bacterial infection may still exist due to invasive operations such as injection of anticoagulants such as heparin during dialysis and the influence of the external environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] With 120 grams of PANCNVP (molecular weight 180,000, vinylpyrrolidone weight fraction is 22%), 10 grams of silver-loaded molecular sieves (silver-loaded weight fraction is 2.5%, average particle diameter is 200 nanometers), 40 grams of polyvinylpyrrolidone (molecular weight is 40,000) and 830 grams of dimethyl sulfoxide to make a spinning solution at 80 degrees Celsius. The spinning solution at 40 degrees Celsius is spun through a circular two-hole co-core spinneret under 4 kg of nitrogen pressure. The ejected primary fibers pass through an air gap of 10 cm and are immersed in ultra-filtered water in an outer coagulation bath at 20 degrees Celsius. The inner coagulation bath ultra-filtered water at 20 degrees Celsius. The hollow fiber membrane is guided to the winding wheel through the godet wheel, cut off after 3 hours, washed in ultrafiltration water for two days, and then immersed in 25% glycerin solution by weight for preservation. The resulting hollow fiber membra...

Embodiment 2

[0021] With 120 grams of PANCNVP (molecular weight 180,000, vinylpyrrolidone weight fraction is 22%), 20 grams of silver-loaded molecular sieves (silver-loaded weight fraction is 2.5%, average particle diameter is 200 nanometers), 60 grams of polyvinylpyrrolidone (molecular weight is 40,000) and 800 grams of dimethyl sulfoxide to make spinning solution at 80 degrees Celsius. The spinning solution at 40 degrees Celsius is spun through a circular two-hole co-core spinneret under 4 kg of nitrogen pressure. The ejected primary fibers pass through an air gap of 10 cm and are immersed in ultra-filtered water in an outer coagulation bath at 20 degrees Celsius. The inner coagulation bath ultra-filtered water at 20 degrees Celsius. The hollow fiber membrane is guided to the winding wheel through the godet wheel, cut off after 3 hours, washed in ultrafiltration water for two days, and then immersed in 25% glycerin solution by weight for preservation. The resulting hollow fiber membrane...

Embodiment 3

[0023] With 120 grams of PANCNVP (molecular weight 180,000, vinylpyrrolidone weight fraction is 22%), 40 grams of silver-loaded molecular sieves (silver-loaded weight fraction is 2.5%, average particle diameter is 200 nanometers), 60 grams of polyvinylpyrrolidone (molecular weight is 40,000) and 780 grams of dimethyl sulfoxide to make a spinning solution at 80 degrees Celsius. The spinning solution at 40 degrees Celsius is spun through a circular two-hole co-core spinneret under 4 kg of nitrogen pressure. The ejected primary fibers pass through an air gap of 10 cm and are immersed in ultra-filtered water in an outer coagulation bath at 20 degrees Celsius. The inner coagulation bath ultra-filtered water at 20 degrees Celsius. The hollow fiber membrane is guided to the winding wheel through the godet wheel, cut off after 3 hours, washed in ultrafiltration water for two days, and then immersed in 25% glycerin solution by weight for preservation. The resulting hollow fiber membra...

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Abstract

An antibacterial hollow fiber membrane containing the Ag-carried molecular sieve able to kill Staphylococcus aureus and pathogenic bacillus is prepared through mixing acrylonitrile-vinyl pyrrolidone copolymer, Ag-carried molecular sieve and pore forming agent, dissolving in dimethyl sulfoxide, filtering, defoaming, spinning, water washing, and pole-holding treating. It can be used for blood dialysis, plasma separation, and cleaning water.

Description

technical field [0001] The present invention relates to hollow fiber membrane technology. It specifically relates to a hollow fiber membrane containing silver-loaded molecular sieves made of acrylonitrile-vinylpyrrolidone copolymer (the term "acrylonitrile-vinylpyrrolidone copolymer" will be abbreviated as "PANCNVP" herein, and the term "acrylonitrile-vinylpyrrolidone copolymer" "Hollow fiber membrane composed of pyrrolidone-based copolymer" will be referred to as "PANCNVP hollow fiber membrane"), and the method and practical application of producing the hollow fiber membrane. Background technique [0002] Hollow fiber membranes made of polyacrylonitrile have been widely used in membrane separation technology for industrial, medical and other purposes. US4323627 prepared a polyacrylonitrile hollow fiber membrane, which can be used in fields such as hemodialysis and ultrafiltration. US 5039420 prepares a hydrophilic hollow fiber membrane from a copolymer of acrylonitrile an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/42B01D69/08
Inventor 徐志康万灵书黄小军
Owner ZHEJIANG UNIV
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