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Preparation method and application of electrostatic spinning modified membrane adsorption material

A technology of electrospinning and membrane adsorption, applied in chemical instruments and methods, adsorption water/sewage treatment, filament/thread forming, etc., can solve the problems of poor hydrophilicity of membrane materials

Inactive Publication Date: 2013-06-19
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyethylene terephthalate (PET) is a thermoplastic resin with a wide range of uses. It has creep resistance, fatigue resistance, friction resistance and dimensional stability; good electrical insulation performance, non-toxic and weather resistance , Good chemical stability, resistance to weak acids and organic solvents, but the membrane material made of PET has poor hydrophilicity, which is unfavorable for applications such as filtration

Method used

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  • Preparation method and application of electrostatic spinning modified membrane adsorption material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Configuration of spinning solution

[0025] Weigh 5.1g of PET solid particles and dissolve in 30ml of trifluoroacetic acid / dichloromethane mixed solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane is 9:1, the mass of PET and the volume ratio of mixed solvent is 17%, stir for 24h until completely dissolved.

[0026] 2. Preparation of PET nanofiber membrane by electrospinning

[0027] Take the PET solution prepared above and put it into the injection device of the electrospinning device to prepare PET nanofiber film. The spinning solution propulsion speed is 0.002mm / s, the spinning voltage is 25Kv, and the receiving distance is 15cm.

[0028] 3. N 2 Plasma treatment of PET film

[0029] Place the PET nanofiber membrane in the reaction chamber of the low-temperature plasma treatment instrument, and use N 2 Low temperature plasma treatment, set discharge time 60s, discharge power 150W, N 2 The air intake is 100sccm.

[0030] 4. Acrylic aci...

Embodiment 2

[0037] 1. Configuration of spinning solution

[0038] Weigh 5.1g of PET solid particles and dissolve in 30ml of trifluoroacetic acid / dichloromethane mixed solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane is 9:1, the mass of PET and the volume ratio of mixed solvent is 17%, stir for 24h until completely dissolved.

[0039] 2. Preparation of PET nanofiber membrane by electrospinning

[0040] Take the PET solution prepared above and put it into the injection device of the electrospinning device to prepare PET nanofiber film. The spinning solution propulsion speed is 0.002mm / s, the spinning voltage is 25Kv, and the receiving distance is 15cm.

[0041] 3. N 2 Plasma treatment of PET film

[0042] Place the PET nanofiber membrane in the reaction chamber of the low-temperature plasma treatment instrument, and use N 2 Low temperature plasma treatment, set discharge time 60s, discharge power 150W, N 2 The air intake is 100sccm.

[0043] 4. Acrylic aci...

Embodiment 3

[0052] 1. Configuration of spinning solution

[0053] Weigh 5.1g of PET solid particles and dissolve in 30ml of trifluoroacetic acid / dichloromethane mixed solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane is 9:1, the mass of PET and the volume ratio of mixed solvent is 17%, stir for 24h until completely dissolved.

[0054] 2. Preparation of PET nanofiber membrane by electrospinning

[0055] Take the PET solution prepared above and put it into the injection device of the electrospinning device to prepare PET nanofiber film. The spinning solution propulsion speed is 0.002mm / s, the spinning voltage is 25Kv, and the receiving distance is 15cm.

[0056] 3. N 2 Plasma treatment of PET film

[0057] Place the PET nanofiber membrane in the reaction chamber of the low-temperature plasma treatment instrument, and use N 2 Low temperature plasma treatment, set discharge time 180s, discharge power 150W, N 2 The air intake is 100sccm.

[0058] 4. Acrylic ac...

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Abstract

The invention discloses a preparation method and application of an electrostatic spinning modified membrane adsorption material. A nanofiber membrane is prepared by adopting an electrostatic spinning instrument and is processed by a low-temperature plasma device, so that the electrostatic spinning nanofiber membrane is modified to obtain the electrostatic spinning modified membrane adsorption material. The PET (polyethylene glycol terephthalate) nanofiber membrane with uniform fiber morphology is prepared by adopting the electrostatic spinning instrument and then is subjected to surface modification by adopting the low-temperature plasma processing device in a plasma processing method combining gas phase and liquid phase, thus obtaining the PET nanofiber membrane with excellent hydrophilic performance. The modified membrane is applied to adsorption of heavy metal ions Cu (II). The electrostatic spinning modified membrane adsorption material can adsorb Cu (II) efficiently and rapidly.

Description

technical field [0001] The invention relates to modifying the surface of the polymer nanofiber membrane and applying it to the adsorption of heavy metal ions, improving the hydrophilic modification of the polymer nanofiber membrane and increasing the adsorption capacity of the heavy metal ion. Background technique [0002] Polyethylene terephthalate (PET) is a thermoplastic resin with a wide range of uses. It has creep resistance, fatigue resistance, friction resistance and dimensional stability; good electrical insulation performance, non-toxic and weather resistance 1. Good stability against chemicals, weak acid and organic solvent resistance, but the membrane material made of PET has poor hydrophilicity, which is unfavorable for applications such as filtration. [0003] The fiber diameter of the polymer nanofiber membrane prepared by electrospinning technology is between tens and hundreds of nanometers. It has large specific surface area, high porosity, light unit weight,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/00D06M10/08D06M14/14D01D5/00C02F1/28C02F101/20
Inventor 付志峰李贵合董小翠曹鼎石艳
Owner BEIJING UNIV OF CHEM TECH
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