Method for preparing galactose homopolymer/polyacrylonitrile composite nanofiber membrane

A technology of composite nanofibers and polyacrylonitrile, which is applied in textiles, papermaking, non-woven fabrics and other directions, can solve the problems of affecting the service stability of membranes, poor hydrophilicity, membrane fouling, etc., and achieves low cost, simple preparation, and easy products. processing effect

Inactive Publication Date: 2012-12-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Because the surface of polyacrylonitrile is relatively inert and has poor hydrophilicity, when it is used for aqueous solution separation, it will have non-specific interactions with biomolecules, resulting in a large amount of adsorption of proteins, platelets, etc. on the membrane surface, resulting in membrane fouling and seriously affecting the membrane. service stability

Method used

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  • Method for preparing galactose homopolymer/polyacrylonitrile composite nanofiber membrane
  • Method for preparing galactose homopolymer/polyacrylonitrile composite nanofiber membrane
  • Method for preparing galactose homopolymer/polyacrylonitrile composite nanofiber membrane

Examples

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Effect test

Embodiment 1

[0038] (1) Dissolve divinyl diacid and galactose in 100 mL of anhydrous pyridine at a molar ratio of 3:1, add 0.5 g of alkaline protease, and react in a constant temperature shaking incubator at 40°C for 4 days at a speed of 210 rpm. Synthesis of galactosyl vinyl esters by enzymatic synthesis.

[0039] (2) Put the above-mentioned glycolipids in a micropolymerization tube, use ammonium persulfate (APS) (accounting for 1.0 mass fraction of galactose ethylene lipid) as an initiator, and add H 2 O as solvent (monomer concentration is 2.0mol / L H 2 O), sealed, vacuumed by an oil pump, and nitrogen gas, repeated several times. The system was placed at 55-60° C. under the protection of nitrogen and stirred for 5 h.

[0040] (3) Dissolve a certain mass of PAN in DMF to obtain a PAN solution with a concentration of 0.1g / mL; then add galactoresin to homopolymerize so that the mass fraction is 40% respectively, stir for several hours until completely dissolved, and let stand for several...

Embodiment 2

[0043] (1) Dissolve divinyl diacid and galactose in 100 mL of anhydrous pyridine at a molar ratio of 3:1, add 1.0 g of alkaline protease, and react in a constant temperature shaking incubator at 45°C for 4 days at a speed of 210 rpm. Synthesis of galactosyl vinyl esters by enzymatic synthesis.

[0044] (2) Put the above-mentioned glycolipids in a micropolymerization tube, use ammonium persulfate (APS) (accounting for 1.0 mass fraction of galactose ethylene lipid) as an initiator, and add H 2 O as solvent (monomer concentration is 2.0mol / L H 2 O), sealed, vacuumed by an oil pump, and nitrogen gas, repeated several times. The system was placed at 55-60° C. under the protection of nitrogen and stirred for 5 h.

[0045] (3) Dissolve a certain mass of PAN in DMF to obtain a PAN solution with a concentration of 0.1g / mL; then add galactose for homopolymerization so that the mass fraction is 50% respectively, stir for several hours until completely dissolved, and let stand for sever...

Embodiment 3

[0048] (1) Dissolve divinyl diacid and galactose in 100 mL of anhydrous pyridine at a molar ratio of 3:1, add 1.5 g of alkaline protease, and react in a constant temperature shaking incubator at 60°C for 4 days at a speed of 210 rpm. Synthesis of galactosyl vinyl esters by enzymatic synthesis.

[0049] (2) Put the above-mentioned glycolipids in a micropolymerization tube, use ammonium persulfate (APS) (accounting for 1.0 mass fraction of galactose ethylene lipid) as an initiator, and add H 2 O as solvent (monomer concentration is 2.0mol / L H 2 O), sealed, vacuumed by an oil pump, and nitrogen gas, repeated several times. The system was placed at 55-60° C. under the protection of nitrogen and stirred for 4 h.

[0050] (3) Dissolve a certain mass of PAN in DMF to obtain a PAN solution with a concentration of 0.1g / mL; then add galactose vinyl lipid homopolymerization so that the mass fraction is 60% respectively, stir for several hours until completely dissolved, and statically ...

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Abstract

The invention discloses a method for preparing a galactose homopolymer / polyacrylonitrile composite nanofiber membrane, which comprises the following steps that: (1) diacid divinyl ester and galactose are dissolved in anhydrous pyridine, and alkaline protease is added to synthesize galactose vinyl ester; (2) ammonium persulfate is added into the galactose to serve as an initiator, H2O or oil is added to serve as solvent, and after the polymerization reaction, Poly-OVSEGA is obtained; (3) polyacrylonitrile is dissolved in DMF (dimethyl formamide), the Poly-OVSEGA is then added to be mixed until complete dissolving, and the mixture is stood to obtain PAN (polyacrylonitrile) / Poly-OVSEGA spinning solution; and (4) the PAN / Poly-OVSEGA spinning solution is subjected to electrostatic spinning, and is finally dried, so the galactose homopolymer / polyacrylonitrile composite nanofiber membrane is obtained. The method for producing the galactose homopolymer / polyacrylonitrile composite nanofiber membrane is simple to operate, and the product is easy to processs, is economic and environment-friendly; and the membrane contains abundant functional groups which can reflect the hydrophic activity, can be used for protein separation and purification, and is low in cost.

Description

technical field [0001] The invention belongs to the field of preparation of nanofiber membranes, in particular to a preparation method of galactose homopolymer / polyacrylonitrile blended nanofiber membranes. Background technique [0002] Sugar, like protein, lipid and nucleic acid, is an important component of living organisms. Sugar plays an important role in cell construction, cell biosynthesis and regulation of cell life activities. Sugars can not only directly participate in life processes in the form of polysaccharides or free oligosaccharides, but also participate in important physiological processes such as protein targeting, cell recognition, and antibody-antigen interactions as carbohydrate complexes, such as glycoproteins, proteoglycans, and glycolipids. . The term glycobiology was also proposed in a review titled "Glycobiology" written by Professor Dwek of Oxford University in 1988, marking the birth of a new branch of glycobiology. [0003] The "sugar coat" on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/728
Inventor 朱利民王蕾权静金成成
Owner DONGHUA UNIV
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