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Biological polysaccharide macromolecule magnetic microsphere and preparation method

A technology of polymer magnetism and biological polysaccharides, which is applied in the field of biopolysaccharide polymer magnetic microspheres and its preparation, and can solve unrelated problems

Inactive Publication Date: 2005-03-30
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Japanese patent 2554835 applied for a preparation method of oil-water emulsion microspheres; Japanese patent publication 02-286729 applied for a preparation method of vinyl aromatic compound magnetic microspheres; Japanese patent publication 01-133304 applied for a polysiloxane Alkane magnetic microspheres and their application; Japanese Patent Publication 62-244438 applied for a magnetic microsphere formed by adsorbing unsaturated fatty acids and its use; Japanese Patent Publication 61-174229 applied for a preparation of magnetic thermoplastic resin microspheres; U.S. Patent Application 20040126902 applied for magnetic microspheres prepared from compounds containing silicon and aluminum and their uses; Chinese patent CN1485362, Chinese patent CN1328083, and Chinese patent CN1290524 applied for the preparation method and use of chitosan microspheres; Chinese patent CN1314430, Chinese patent CN1293952, etc. applied for the compounding of chitosan and polyacrylic acid or fibroin to prepare polymer microspheres and its application; Chinese patent CN1275619, Chinese patent CN1234444, etc. applied for the compounding of carrageenan and dextran or konjac polysaccharide Preparation and application of immobilized cell carriers; foreign countries use synthetic polymer materials to prepare magnetic microspheres; domestic patents do not involve biopolysaccharide polymer magnetic microspheres such as tamarind gum, artemisia gum, xanthan gum, and guar gum preparation of

Method used

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  • Biological polysaccharide macromolecule magnetic microsphere and preparation method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: the preparation of tamarind jelly magnetic microspheres,

[0018] Step 1: Prepare 34.8% FeSO 4 ·7H 2 O in water, 54.1% FeCl 3 ·6H 2 O aqueous solution, 36.0% NaOH aqueous solution;

[0019] Step 2: Mix the ferrous salt solution and the ferric salt solution (V / V) 4:5, stir,

[0020] Step 3: Heat up to 55°C, add 5 parts (V / V) of alkali solution, add PEG10000 3.6% (W / V) after reacting for 30 minutes;

[0021] Step 4: Heat up to 80°C and react for 30 minutes to stop the reaction, cool to room temperature, neutralize to neutral with hydrochloric acid, let stand, the supernatant is water-soluble magnetic fluid;

[0022] Step 5: In 50ml of 1.0% anhydrous sulfanilic acid aqueous solution, add 1ml of water-soluble magnetic fluid, 0.5g of tamarind gum, react at room temperature for 2hr, add organic paraffin, ethyl acetate, span-80, at 500rpm / Stir for 20min at a speed of min, slowly add 3ml of formaldehyde dropwise, continue to stir for 1hr, pour off the super...

Embodiment 2

[0023] Example 2: Preparation of Artemisia Gum Magnetic Microspheres

[0024] In step 5, replace 0.5g tamarind gum with 0.40g Artemisia gum, and the types, proportions and preparation methods of other reagents are the same as those described in Example 1, to obtain Artemisia gum magnetic microspheres, and the magnetic susceptibility of Artemisia gum magnetic microspheres 1.726emu / g.

Embodiment 3

[0025] Embodiment 3: Preparation of xanthan gum magnetic microspheres

[0026] Replace 0.5g tamarind gum with 0.8g xanthan gum in step 5, the kind, proportioning and preparation method of other reagents are as described in embodiment 1, get xanthan gum magnetic microspheres, xanthan gum magnetic microspheres magnetized Rate 1.393emu / g.

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Abstract

In the invention, biological polysaccharide macromolecule of tamarind gum, sand-Wormwood gum, anthogen gum and guar gum etc. are used as prepn. material, Fe3O4, is magnetic fluid, formaldehyde is cross-linking agent, sulfanilic acid sulhonyl polysaceharide hydrocarbon radial is used to prepare magnetic microball with higher magnetic responsiveness, which is surface porous honeycomb texture, aperture is 2.0X102-6.3X102 um, magnetisability is 1.393-1.726 emu / g, surface function radical is -OSO2(C6H4)NH2.

Description

technical field [0001] The invention mainly relates to a biological polysaccharide polymer magnetic microsphere and a preparation method. Background technique [0002] Magnetic polymer microspheres refer to polymer microspheres that contain magnetic metal or metal oxide ultrafine powder inside and have magnetic responsiveness. It is a new type of functional polymer material developed in the past two decades. Magnetic polymer microspheres can introduce a variety of reactive functional groups on the surface of the microspheres through chemical reactions such as copolymerization and surface modification, and have specific reactivity, and can bind enzymes, antibodies, cells and other biologically active substances through covalent bonds . Magnetic polymer microspheres have certain magnetic responsiveness, so they have good operability and production performance, and can be used as carriers of enzymes, antibodies, cells or other biological materials in different fields. [000...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08K3/22C08L5/00
Inventor 张继曾家豫王云普王永峰
Owner NORTHWEST NORMAL UNIVERSITY
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