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Functionalized styrene-maleic anhydride copolymer/silicon dioxide composite fiber membrane material and preparation method thereof

A composite fiber membrane and maleic anhydride technology, applied in chemical instruments and methods, separation methods, fiber chemical characteristics, etc., can solve the problems of oil-water separation efficiency decline, easy fouling, membrane easy pollution, etc.

Inactive Publication Date: 2020-10-23
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although membrane technology has made great progress, the problem of easy fouling of membranes in the separation process is still one of the most challenging problems in the separation industry
Polysulfone (PSf), polyethersulfone (PES), polyvinylidene fluoride (PVDF), polyacrylonitrile (PAN) and cellulose acetate (CA), which are commonly used in the preparation of microfiltration / ultrafiltration membranes, are less expensive than inorganic The material is ceramic membrane, but it is easy to scale, resulting in a decrease in oil-water separation efficiency
In addition, the strength and long-term stability of the separation membrane are also important considerations in the treatment of oily sewage. When a single polymer membrane or nanofiber membrane is used as a separation material, there are generally problems such as poor mechanical properties and weak anti-fouling properties.

Method used

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  • Functionalized styrene-maleic anhydride copolymer/silicon dioxide composite fiber membrane material and preparation method thereof
  • Functionalized styrene-maleic anhydride copolymer/silicon dioxide composite fiber membrane material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation method of styrene-maleic anhydride copolymer / silicon dioxide composite fiber membrane material, concrete steps are as follows:

[0033] 1) Add 0.21g of silane coupling agent monomer YDH-151 and 100ml of toluene into a three-necked flask, dissolve 4.9g of maleic anhydride in 20ml of toluene, slowly add it dropwise to the three-necked flask, and simultaneously add 9.8g of styrene and 0.01 g azobisisobutyronitrile AIBN mixture, after the dropwise addition, react at a constant temperature at 75° C. for 1 hour, then raise the temperature to 80° C., react at a constant temperature for 1 hour, and after the reaction is completed, f-PSMA is obtained by suction filtration.

[0034] 2) Disperse 0.3g of nano-silica in 11ml of DMF, sonicate at 30°C for 1.5h, add 3g of f-PSMA to dissolve it, and obtain an electrospinning solution with a mass concentration of 0.3g / ml.

[0035] 3) The spinning liquid is electrospun at a voltage of 20KV, the distance between the e...

Embodiment 2

[0038] A kind of preparation method of styrene-maleic anhydride copolymer / silicon dioxide composite fiber membrane material, concrete steps are as follows: concrete steps are as follows:

[0039]1) Add 0.5g of silane coupling agent monomer YDH-151 and 100ml of toluene into a three-necked flask, dissolve 4.9g of maleic anhydride in 20ml of toluene, slowly add it dropwise to the three-necked flask, and simultaneously add 4.9g of styrene and 0.02 The mixture of g AIBN was reacted at 75° C. for 1 hour at a constant temperature after the dropwise addition, and then heated to 85° C. for 2 hours at a constant temperature. After the reaction was completed, f-PSMA was obtained by suction filtration.

[0040] 2) Disperse 0.2g of nano-silica in 8ml of DMF, sonicate at 30°C for 1.5h, add 3g of f-PSMA to dissolve it, and obtain an electrospinning solution with a mass concentration of 0.4g / ml.

[0041] 3) The spinning liquid is electrospun at a voltage of 17KV, the distance between the elec...

Embodiment 3

[0043] A kind of preparation method of styrene-maleic anhydride copolymer / silicon dioxide composite fiber membrane material, concrete steps are as follows:

[0044] 1) Add 1.0g of silane coupling agent monomer YDH-151 and 100ml of toluene into a three-necked flask, dissolve 4.9g of maleic anhydride in 20ml of toluene, slowly add it dropwise to the three-necked flask, and simultaneously add 9.8g of styrene and 0.03 The mixture of g AIBN was reacted at 75° C. for 1 hour at a constant temperature after the dropwise addition, and then heated to 85° C. for 3 hours at a constant temperature. After the reaction was completed, f-PSMA was obtained by suction filtration.

[0045] 2) Disperse 0.2g of nano-silica in 8.4ml of DMF, sonicate at 30°C for 1.5h, add 4g of f-PSMA to dissolve it, and obtain an electrospinning solution with a mass concentration of 0.5g / ml.

[0046] 3) The spinning liquid is electrospun at a voltage of 15KV, the distance between the electrospinning needle and the c...

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Abstract

The invention provides a functionalized styrene-maleic anhydride copolymer / silicon dioxide composite fiber membrane material and a preparation method thereof. The membrane material has a multistage micro-nano structure; the multistage micro-nano structure comprises nanoscale functionalized PSMA fibers, silicon dioxide and micron-sized holes formed by overlapping and staggering the functionalized PSMA fibers. The nano silicon dioxide is positioned on the surface and inside the functionalized PSMA fibers; wherein the functionalized PSMA fibers and nano silicon dioxide positioned on the surface and inside the functionalized PSMA fibers are adopted to form a uniform concave-convex structure, and the functionalized PSMA is a styrene-maleic anhydride copolymer with a coupling function, which isobtained by copolymerizing a silane coupling agent monomer, a maleic anhydride monomer and a styrene monomer. The functionalized styrene-maleic anhydride copolymer / silicon dioxide composite fiber membrane material has super-oleophobic performance, high oil-water separation efficiency and high mechanical strength.

Description

technical field [0001] The invention belongs to the technical field of polymer composite material preparation, and in particular relates to a functionalized styrene-maleic anhydride copolymer / silicon dioxide composite fiber membrane material and a preparation method thereof. Background technique [0002] Traditional oil-water separation methods include physical methods and chemical methods: physical methods such as activated carbon, organic clay, zeolite, polypropylene non-woven fabrics, etc. will absorb water while absorbing oil, making the separation process cumbersome and inefficient; chemical methods such as oxidation, electrolysis, etc. Chemical processes, photocatalytic treatment, ozone treatment and demulsification will use toxic compounds, which will increase costs and produce secondary pollution. In the past ten years, the application of membrane technology has become an important separation technology. Its advantages are that it can work without adding other chemic...

Claims

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Application Information

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IPC IPC(8): B01D69/12B01D67/00B01D71/76B01D17/022D01F6/46D01F1/10C08F212/08C08F222/08C08F230/08
CPCB01D69/12B01D71/76B01D67/0079B01D17/02B01D17/085D01F6/46D01F1/10C08F212/08C08F222/08C08F230/085
Inventor 郭雅妮文轩张宇
Owner WUHAN INSTITUTE OF TECHNOLOGY
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