Antioxidant anti-ultraviolet microsphere, preparation method and application

An anti-ultraviolet and anti-oxidation technology, which is applied in the field of preparation, anti-oxidation and anti-ultraviolet microspheres, can solve the problems that anti-oxidation and anti-ultraviolet microspheres have not been seen, and achieve excellent ultraviolet shielding performance, simple preparation method, and excellent anti-oxidation effect Effect

Active Publication Date: 2022-08-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no relevant research reports on anti-oxidation and anti-ultraviolet microspheres based on maleic anhydride polymers.

Method used

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  • Antioxidant anti-ultraviolet microsphere, preparation method and application
  • Antioxidant anti-ultraviolet microsphere, preparation method and application
  • Antioxidant anti-ultraviolet microsphere, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of maleic anhydride copolymer microspheres: Weigh 5.21 g of styrene, 4.90 g of maleic anhydride, 0.52 g of divinylbenzene (molar ratio of 100:100:8) and 0.10 g of initiator azobis Isobutyronitrile (1wt% of the total mass of maleic anhydride and styrene) was added to a 250mL three-necked flask, and then 140mL of isoamyl acetate was added, and the reaction system was connected after ultrasonic dissolving. The concentrations of styrene and maleic anhydride were 0.35mol respectively. / L; pass N 2 After 30 minutes, the three-necked flask was placed in an oil bath at 70°C, reacted under a nitrogen atmosphere for 6 hours, the product was centrifuged at 10,000 r / min for 5 minutes, washed three times with anhydrous methanol, and then dried in a vacuum oven to obtain Maleic anhydride copolymer microspheres 1 ;

[0044] (2) Amination of microspheres: weigh 2g Maleic anhydride copolymer microspheres 1 , add 60 mL of a mixed solution of ethanol and water (volume...

Embodiment 2

[0048] (1) Preparation of maleic anhydride copolymer microspheres: Weigh 5.21 g of styrene, 4.90 g of maleic anhydride, 0.99 g of ethylene glycol dimethacrylate (molar ratio of 100:100:10) and 0.10 g of initiator Dibenzoyl peroxide (1wt% of the total mass of maleic anhydride and styrene) was added to a 250mL three-necked flask, and then 100mL of ethyl butyrate was added, and after ultrasonic dissolution, the reaction system was connected, and the concentration of styrene and maleic anhydride was 0.5mol / L respectively; pass N 2 After 30 minutes, the three-necked flask was placed in an oil bath at 80°C, reacted under nitrogen atmosphere for 3 hours, the product was centrifuged at 10,000 r / min for 5 minutes, washed three times with anhydrous methanol, and then dried in a vacuum oven to obtain Maleic anhydride copolymer microspheres 2 ;

[0049] (2) Amination of microspheres: weigh 2g Maleic anhydride copolymer microspheres 2 , add 40 mL of a mixed solution of ethanol and wat...

Embodiment 3

[0052] (1) Preparation of maleic anhydride copolymer microspheres: Weigh 5.91g α-methylstyrene, 4.90g maleic anhydride and 0.52g crosslinking agent divinylbenzene (molar ratio is 100:100:8) and 0.11 g g Initiator azobisisobutyronitrile (1wt% of the total mass of maleic anhydride and α-methylstyrene) was added to a 100mL three-necked flask, followed by 50mL isoamyl acetate, and after ultrasonic dissolution, the reaction system was connected, styrene and the concentration of maleic anhydride are 1mol / L respectively; 2 After 30 minutes, the three-necked flask was placed in an oil bath at 70°C, reacted under a nitrogen atmosphere for 6 hours, the product was centrifuged at 10,000 r / min for 5 minutes, washed three times with anhydrous methanol, and then dried in a vacuum oven to obtain Maleic anhydride copolymer microspheres 3 ;

[0053] (2) Amination of microspheres: weigh 2g Maleic anhydride copolymer microspheres 3 , add 60 mL of a mixed solution of ethanol and water (volum...

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Abstract

The invention provides an antioxidant anti-ultraviolet microsphere, a preparation method and application, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: firstly, preparing maleic anhydride copolymer microspheres by a simple and efficient self-stabilization precipitation polymerization method, and centrifuging or filtering and purifying after the reaction is finished to obtain the microspheres; then carrying out amination modification on the microspheres by using ethidene diamine, and grafting a phenolic acid antioxidant to the surfaces of the aminated microspheres through EDC / NHS mediated amidation reaction to obtain the anti-oxidation and anti-ultraviolet microspheres. The prepared microspheres can be used for preparing antioxidant ultraviolet shielding composite materials, and have great application potential in the fields of food packaging materials, sunscreen skin care, coatings and the like.

Description

technical field [0001] The invention belongs to the field of functional composite materials, and particularly relates to an anti-oxidation and anti-ultraviolet microsphere, a preparation method and its application in composite materials. Background technique [0002] Ultraviolet rays play a vital role in the maintenance and development of life on earth. It can not only trigger photosynthesis, convert the energy in sunlight into biochemical energy necessary to maintain life on earth, but also promote the synthesis of vitamin D in the human body. In addition, UV light is widely used in detection, photography, optical sensors, disinfection, medical diagnosis and treatment, and polymer processing. However, excessive UV radiation not only damages human health, but also destroys the structure and properties of many polymeric materials. The most direct and effective way to protect against UV rays is to add UV shielding agents to materials or personal care products. However, commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F222/08C08F212/36C08F222/14C08F212/12C08F8/00C08F8/32C08J5/18C08L29/14C08L29/04C08L75/04C08L27/06C08L25/04C08L25/06
CPCC08F212/08C08F212/12C08F8/00C08J5/18C08J2329/14C08J2329/04C08J2375/04C08J2327/06C08J2425/04C08J2425/16C08F222/08C08F212/36C08F222/102C08F8/32
Inventor 东为富刘晓锦李婷汪洋王世波李广龙
Owner JIANGNAN UNIV
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