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Biodegradable Carbomer core-shell structure polymer microsphere, preparation method and application thereof

A technology of biodegradation and core-shell structure, which is applied in the field of carbo-like core-shell structure polymer microspheres and its preparation, can solve the problems affecting practical application and the decline of storage performance of biodegradable carbo resin, and achieve good storage performance and the effect of using performance

Pending Publication Date: 2022-02-18
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the storage performance of biodegradable carbomer resin obtained by copolymerization or blending method will be greatly reduced due to the introduction of biodegradable components, thus affecting its practical application

Method used

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  • Biodegradable Carbomer core-shell structure polymer microsphere, preparation method and application thereof
  • Biodegradable Carbomer core-shell structure polymer microsphere, preparation method and application thereof
  • Biodegradable Carbomer core-shell structure polymer microsphere, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A preparation method of biodegradable carbogen-like core-shell polymer microspheres, comprising the steps of:

[0049] Chitosan microspheres, potassium persulfate and methylenebisacrylamide were added to the acrylic acid solution, reacted at 55°C for 6h under a nitrogen atmosphere, centrifuged, washed with ethanol, and vacuum-dried at 60°C for 24h to obtain polymer microspheres;

[0050]The mass ratio of chitosan microspheres, potassium persulfate, methylene bisacrylamide and acrylic acid is 1:0.15:0.15:10;

[0051] The preparation method of chitosan microsphere described in the present embodiment, comprises the steps:

[0052] S11. Configure the reverse phase suspension:

[0053] S111. Add 4.97g of Span 80 into a two-necked flask filled with 100ml of liquid paraffin, and mechanically stir for 30min to obtain an oil phase;

[0054] S112. adding 1 g of chitosan to 50 ml of a 2% glacial acetic acid solution, and ultrasonically stirring to obtain an aqueous chitosan phas...

Embodiment 2

[0058] A preparation method of biodegradable carbogen-like core-shell polymer microspheres, comprising the steps of:

[0059] Starch microspheres, potassium persulfate and methylenebisacrylamide were added to the acrylic acid solution, reacted at 55°C for 6h under nitrogen atmosphere, centrifuged, washed with ethanol, and vacuum-dried at 60°C for 24h to obtain polymer microspheres;

[0060] The mass ratio of the starch microspheres, potassium persulfate, methylenebisacrylamide and acrylic acid is 1:0.15:0.15:10;

[0061] The preparation method of starch microspheres described in the present embodiment may further comprise the steps:

[0062] S11. Configure the reverse phase suspension:

[0063] S111. Add 7.5g of Span 80 into a two-neck flask filled with 150ml of liquid paraffin, and mechanically stir for 30min to obtain an oil phase;

[0064] S112. Add 1 g of soluble starch into 22 ml of deionized water, stir at 80°C to make it fully gelatinized, and obtain an aqueous starch...

Embodiment 3

[0068] A preparation method of biodegradable carbogen-like core-shell polymer microspheres, comprising the steps of:

[0069] Add carboxymethyl cellulose microspheres, potassium persulfate and methylene bisacrylamide to the acrylic acid solution, react for 6 hours at 55°C under a nitrogen atmosphere, centrifuge, wash with ethanol, and vacuum dry at 60°C for 24 hours to obtain polymer microspheres. ball;

[0070] The mass ratio of the carboxymethyl microspheres, potassium persulfate, methylenebisacrylamide and acrylic acid is 1:0.15:0.15:10;

[0071] The preparation method of carboxymethyl microspheres described in the present embodiment comprises the steps:

[0072] S11. Configure the reverse phase suspension:

[0073] S111. Add 7.5g of Span 80 into a two-neck flask filled with 150ml of liquid paraffin, and mechanically stir for 30min to obtain an oil phase;

[0074] S112. Add 1 g of carboxymethyl cellulose into 22 ml of deionized water, stir well to dissolve it, and obtain...

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Abstract

The invention discloses a biodegradable Carbomer core-shell structure polymer microsphere, a preparation method and application thereof. The method comprises the steps that a biodegradable microsphere is taken as a base material, polyacrylic acid is grafted on the surface of the biodegradable microsphere, and crosslinking is carried out, so that the polymer microsphere which takes a biodegradable polymer as a core and cross-linked polyacrylic acid as a shell, the core and the shell are connected through chemical bonds, and the core is taken as a part of cross-linking points of the shell is prepared. According to the invention, according to the polymer microsphere, a biodegradable component is used as a core cross-linking point of carbomer resin, so that the problem that the carbomer resin cannot be degraded and forms micro-plastic in a water body to pollute the environment is solved; and the biodegradable component is introduced through a core-shell structure, so that compared with other synthetic methods in which biodegradable components are introduced, the carbomer resin has good storage performance and use performance.

Description

technical field [0001] The invention relates to the technical field of carbo resin preparation, more specifically, to a biodegradable carbo-like core-shell polymer microsphere and its preparation method and application. Background technique [0002] Carboresin is a swellable polymer obtained by cross-linking acrylic acid copolymers. It is a loose white powder and slightly acidic in appearance. So far, Carbo resin has been widely used in petrochemical, printing and dyeing coatings, daily chemical products, biomedicine and other fields. Because the molecular structure of carbomer resin itself contains hydrophilic -COOH carboxyl groups, coupled with the characteristics of the cross-linked molecular structure, the molecular chain of carbomer resin will swell in water and lock the water in the gel network, thereby achieving growth. Thick purpose. Carbo resins produced and sold on the market are mainly carbo resin powders produced by precipitation polymerization and spherical ca...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F251/02C08F220/06C08F222/38C08J3/24C08L51/02C08K5/07C08K3/32
CPCC08F251/00C08F251/02C08J3/24C08J2351/02C08K5/07C08K3/32C08F220/06C08F222/385C08F216/125
Inventor 阮文红郑震洋章明秋
Owner SUN YAT SEN UNIV
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