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Method for preparing bio-carrier by porous foam polymer modification

A porous foam, polymer technology, applied in the direction of fixing on/in organic carriers, separation methods, sustainable biological treatment, etc., to achieve the effect of high proportion of components and lower modification costs

Inactive Publication Date: 2012-11-21
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a method for modifying porous foam polymer as a biological immobilization carrier by coating and modifying. The method can prepare a bioreaction carrier with excellent performance, and the carrier solves the problem of surface adsorption at the same time. , hydrophilicity, diversity of surface active functional groups, positive surface charge and bioaffinity

Method used

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  • Method for preparing bio-carrier by porous foam polymer modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Weigh 18 g of 300-mesh powdered activated carbon and 4 g of 300-mesh hydroxyapatite and mix them for use. Measure 180 ml of deionized water, add 0.2 g of trimethylamine hydrochloride, stir rapidly for 10 minutes, and completely dissolve trimethylamine hydrochloride in deionized water. Then deionized water containing trimethylamine hydrochloride was poured into activated carbon and hydroxyapatite, and stirred rapidly to mix. Then add 0.2 ml of alkylaryl polyether alcohol wetting and dispersing agent, and stir for 60 minutes. After the modifier is fully wetted, add 50ml of cationic acrylic emulsion with a solid content of 40%, 0.2ml of silicone defoamer, stir rapidly for 20 minutes to fully mix various components, and complete the preparation of the modified coating solution.

[0048] A commercially available common polyether polyurethane foam (pore size 10PPI, density 26kg / m3) was cut into small pieces of 40*40*20mm as the modified coated foam polymer. The method of so...

Embodiment 2

[0051] Weigh 25 g of 300 mesh powdered activated carbon to prepare 20 ml of 10% PVA117 aqueous solution. Measure 180 ml of deionized water, add 0.18 g of trimethylamine hydrochloride, stir rapidly for 10 minutes, and completely dissolve trimethylamine hydrochloride in deionized water. Then pour the deionized water containing trimethylamine hydrochloride into the activated carbon, then add the dissolved PVA117, stir and mix quickly. Then add 0.2 ml of alkylaryl polyether alcohol wetting and dispersing agent, and stir for 60 minutes. After the modifier is fully wetted, add 65ml of cationic fluoropropylene emulsion with a solid content of 40%, 0.2ml of silicone defoamer and 2ml of cross-linking agent glutaraldehyde, stir rapidly for 20 minutes to fully mix the various ingredients, The preparation of the modified coating solution is completed.

[0052] A commercially available common polyether polyurethane foam (pore diameter 20PPI, density 30kg / m3) was cut into small pieces of ...

Embodiment 3

[0055] Weigh 22g of nano-scale attapulgite powder, 5g of 200 mesh chitosan (chitin), mix well and set aside. Measure 180 ml of deionized water, add 0.18 g of trimethylamine hydrochloride, stir rapidly for 10 minutes, and completely dissolve trimethylamine hydrochloride in deionized water. Then pour deionized water containing trimethylamine hydrochloride into the nano-attapulgite powder and chitosan powder, and stir rapidly for 10 minutes. Then add 0.2 ml of alkylaryl polyether alcohol wetting and dispersing agent, and stir for 90 minutes. After the modifier is fully wetted, add 60ml of cationic styrene-acrylic emulsion with a solid content of 40%, 0.2ml of silicone defoamer, stir rapidly for 20 minutes to fully mix various ingredients, and complete the preparation of the modified coating solution .

[0056] A commercially available common polyether polyurethane foam (pore size 8PPI, density 23kg / m3) was cut into small pieces of 40*40*40mm as the modified coated foam polymer....

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Abstract

The invention discloses a method for preparing a bio-carrier by porous foam polymer modification. The method is used for coating bonding modification of porous foam polymers. The method comprises the following steps of adding one or more cationized porous high-adsorptivity functional materials and one or more cationized polyhydric hydrophilic functional materials into coating modification slurry, mixing the coating modification slurry and a cationic acrylic acid emulsion, carrying out coating bonding of the mixture on one or more porous foam polymers, and carrying out cross-linking curing to obtain the modified bio-carrier having strong adsorbability, hydrophily, surface active functional group diversity, positive surface charges and strong biocompatibility. The method provided by the invention is not limited by structures, shapes, aperture sizes and physical properties of foam polymers and can be widely used for external coating modification of multiple carrier materials. The method provided by the invention has the advantages of convenient and simple operation, low investment and making cost, excellent carrier performances and long service life. The bio-carrier obtained by the method can be widely used in fields of fixed attachment of various microorganisms, and enhanced biological treatment.

Description

technical field [0001] The invention relates to a new method for preparing a bio-adhesive carrier by coating and modifying a porous foam polymer. The prepared carrier is suitable for the occasion of attaching or immobilizing microorganisms. From environmental protection to fermentation and other microbial cultivation applications, it aims to improve the carrier Biocompatibility and adsorption properties to enhance the microbial treatment process. Background technique [0002] Filled reactors are widely used in fields such as chemistry and biology that require reactions. Generally speaking, by filling high surface area / volume fillers, the internal surface area of ​​the reactor is greatly increased. The surface area of ​​the filler provides an attachment surface for catalysts in chemical reactions or microorganisms in biological reactions. Due to the improvement of the contact time and contact effect between reactants and catalysts in the reaction, it can promote the reduction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C12N11/08C02F3/10C02F3/28C02F3/30B01D53/85
CPCY02A50/20Y02P20/50Y02W10/10
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