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Antibiotic hollow fiber separation film and preparation method thereof

A fiber separation and separation membrane technology, which is used in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., to achieve good damage resistance, long service life, good physical stability and chemical stability.

Inactive Publication Date: 2011-11-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the preparation of functional polymer films with antibacterial properties to improve their antifouling properties.

Method used

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  • Antibiotic hollow fiber separation film and preparation method thereof
  • Antibiotic hollow fiber separation film and preparation method thereof
  • Antibiotic hollow fiber separation film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The ingredients are formulated according to the following components and compositions: 10.5% of polyethersulfone; 4.5% of quaternary ammonium salt-acrylonitrile copolymer; 5% of polyvinylpyrrolidone; 80% of dimethylacetamide. Put the above raw materials into the dissolution kettle, stir and swell at room temperature for 1 hour, then heat and stir to dissolve at 80°C for 24 hours, and then filter and defoam the resulting solution for use. The casting solution is spun into a hollow fiber membrane through a concentric tubular spinneret. The membrane forming process is as follows: the metering pump specification is 0.35mL / r, the pump speed is 11r / min, the length of the air section is 180mm, the inner and outer coagulation baths are water, and the spinning process is as follows: The wire speed is 28m / min. It can be assembled after washing and pore-preserving treatment and drying at low temperature. Water flux is 200L / m 2 .h, the retention rate of bovine serum albumin is 87...

Embodiment 2

[0040] According to the following components and composition batching: polyethersulfone 15%; polyvinylpyrrolidone 5%; dimethylacetamide 80% dissolves membrane by the method for embodiment 1, and water flux is 280L / m 2 .h, the retention rate of bovine serum albumin is 37%, and the bacteriostatic rate to Escherichia coli and Staphylococcus aureus is all 0%.

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Abstract

The invention relates to an antibacterial hollow fiber separation membrane and a preparation method thereof. The membrane comprises polyether sulfone, quaternary ammonium salt-acrylonitrile copolymer, pore-forming agent and organic solvent with the weight ratio of 10-30 to 1-10 to 1-20 to 60-90. The preparation method comprises: (1) the preparation of casting liquid: the polyether sulfone, the quaternary ammonium salt-acrylonitrile copolymer, the pore-forming agent and the organic solvent are mixed and the raw materials are put in a dissolution reactor to be filtered, deaerated and purified; (2) the preparation of the hollow fiber membrane: in the spinning process, a dry-jet wet spinning method is adopted for the molding. After the dry-spinning process of 50-500mm, primary hollow fiber membrane is formed through solidification in coagulation bath. After drawing, washing, winding, hole preserved processing and drying, blending hollow fiber membrane provided by the invention is obtained. The prepared separation membrane has the advantages of high mechanical strength, good destruction resistance performance, good physical stability and chemical stability and long service life.

Description

technical field [0001] The invention belongs to the field of organic separation membrane preparation, in particular to an antibacterial hollow fiber separation membrane and a preparation method thereof. Background technique [0002] Polyethersulfone (PES) is a membrane material with excellent comprehensive properties, which has high tensile strength, excellent chemical stability, blood compatibility, heat resistance, pressure resistance, corrosion resistance and other properties; it is often used as a super Filtration and nanofiltration membrane materials, and can be used as the bottom membrane of composite membranes for reverse osmosis and gas separation membranes. With the development of membrane technology, polyethersulfone membranes have been more and more widely used in water treatment, blood purification, food manufacturing and other fields. [0003] However, due to the hydrophobicity of the polyethersulfone membrane material, it is easy to adsorb with the particles, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/68B01D69/08
Inventor 沈新元毛健康王灿张召才
Owner DONGHUA UNIV