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Polysulphone nanometer fiber polymer membrane and preparation method as well as application thereof

A nanofiber, polymer membrane technology, applied in fiber processing, separation methods, chemical instruments and methods, etc., can solve the problems of complex preparation process, and achieve the effect of large specific surface area and high porosity

Inactive Publication Date: 2011-11-16
BEIJING SHOUKE PENBO TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polysulfone membrane prepared by the above-mentioned phase inversion method is widely used, but its preparation process is relatively complicated, and post-treatment is required during the application process.

Method used

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  • Polysulphone nanometer fiber polymer membrane and preparation method as well as application thereof
  • Polysulphone nanometer fiber polymer membrane and preparation method as well as application thereof
  • Polysulphone nanometer fiber polymer membrane and preparation method as well as application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Dissolve 15g of polysulfone (weight-average molecular weight: 75,000) in 60g of N,N-dimethylformamide, and stir magnetically at a temperature of 50°C for 24 hours to obtain a clear and transparent polysulfone spinning solution, wherein polysulfone spinning The mass concentration of polysulfone in the silk solution is 20wt%. The polysulfone spinning solution is placed in the syringe of the electrospinning equipment; the stainless steel spinneret connected to the syringe through the raw material delivery pipeline is fixed, and the spinneret is placed between the spinneret and the polished stainless steel drum receiver The distance is adjusted to be 15cm, and spinning is carried out at a temperature of 20°C and a humidity of 50%; wherein, the polysulfone spinning solution is injected into the spinneret at a speed of 0.5ml / h under the action of a syringe pump. A 12kV DC high-voltage electric field is applied between the spinneret and the grounded drum receiver, and the polys...

Embodiment 2

[0042] Dissolve 18g of polysulfone (weight-average molecular weight: 75,000) in 82g of N,N-dimethylformamide, and stir magnetically at a temperature of 50°C for 24 hours to obtain a clear and transparent polysulfone spinning solution, wherein polysulfone spinning The mass concentration of polysulfone in the silk solution is 18wt%. The polysulfone spinning solution is placed in the syringe of the electrospinning equipment; the stainless steel spinneret connected to the syringe through the raw material delivery pipeline is fixed, and the spinneret is placed between the spinneret and the polished stainless steel drum receiver The distance is adjusted to be 25cm, and spinning is performed at a temperature of 18°C ​​and a humidity of 55%. Wherein, the polysulfone spinning solution is injected into the spinneret at a speed of 5ml / h under the action of a syringe pump. A 20kV DC high-voltage electric field is applied between the spinneret and the grounded drum receiver, and the polysu...

Embodiment 3

[0045] Dissolve 15g of polyethersulfone (weight-average molecular weight: 53,500) in 50.22g of N, N-dimethylformamide, and stir magnetically at a temperature of 50°C for 24 hours to obtain a clear and transparent polyethersulfone spinning solution, wherein, The mass concentration of polyethersulfone in the polyethersulfone spinning solution is 23wt%. The polyethersulfone spinning solution is placed in the syringe of the electrospinning equipment; the stainless steel spinneret connected to the syringe through the raw material delivery pipeline is fixed, and the spinneret is placed between the spinneret and the polished stainless steel drum receiver The distance between them is adjusted to be 10cm, and the spinning is carried out at a temperature of 30°C and a humidity of 65%. Wherein, the polyethersulfone spinning solution is injected into the spinneret at a speed of 1ml / h under the action of a syringe pump, A 15kV DC high-voltage electric field is applied between the spinneret...

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Abstract

The invention relates to a polysulphone nanometer fiber polymer membrane and a preparation method as well as application thereof. The preparation method comprises the following steps: placing a polysulphone spinning solution in an injector of a static spinning device; spinning under the conditions that temperature is 18-30 DEG C and humidity is 35-65%; injecting the spinning solution into a spinning nozzle at a speed of 0.5-5 ml / h under the action of an injection pump; applying a 12-20kV direct-current high-voltage electric field between the spinning nozzle and a grounded roller receiver so as to obtain a nanometer fiber polymer membrane from the roller receiver; and finally drying to obtain the polysulphone nanometer fiber polymer membrane provided by the invention. The diameter of the polysulphone nanometer fiber in the membrane provided by the invention is 300-700 nanometers; the porosity between the polysulphone nanometer fibers is 45-75%; and an aperture of pore formed between the polysulphone nanometer fibers is 1-8 microns. The polysulphone nanometer fiber polymer membrane provided by the invention can be used for preparing a filtering material for filtering grains in the air or a support material of an ultra-filtrated, nano-filtrated or reverse osmosis membrane.

Description

technical field [0001] The invention belongs to the field of various nanofiber membranes prepared by electrospinning, and in particular relates to a polysulfone nanofiber polymer membrane with a large aperture prepared by an electrospinning method and its application, and an electrospinning preparation method of the polysulfone nanofiber polymer membrane. Background technique [0002] The main chain of polysulfone materials contains sulfone groups and aromatic rings, mainly bisphenol A polysulfone, polyethersulfone, polyethersulfone ketone, polyphenylene sulfide sulfone, etc. Since the sulfur atom of the sulfone group is in the highest oxidation state, and there are benzene rings on both sides of the sulfone group to form a highly conjugated system, this type of material has excellent oxidation resistance, thermal stability and high temperature melting stability. Polyethersulfone is a special engineering plastic developed by the British ICI company in the 1970s. Its glass tr...

Claims

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Application Information

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IPC IPC(8): B01D71/68D01D5/00B01D46/54B01D69/10
Inventor 操建华吴大勇唐代华
Owner BEIJING SHOUKE PENBO TECH DEV
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