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Lipopeptide modified nano zinc oxide as well as synthesis method and application thereof

A technology of nano-zinc oxide and a synthesis method, which is applied in the field of daily chemical materials, can solve the problems of poor biocompatibility of surface modifiers, low modification efficiency, complex surface modification methods, etc., and achieves low photochemical activity and high biological phase. capacitive effect

Pending Publication Date: 2022-05-24
GUANGZHOU TINCI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned modification methods generally have the defects of low modification efficiency, large amount or concentration of surface modifiers, complex surface modification methods, harsh surface modification reaction conditions, and poor biocompatibility of surface modifiers.

Method used

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  • Lipopeptide modified nano zinc oxide as well as synthesis method and application thereof
  • Lipopeptide modified nano zinc oxide as well as synthesis method and application thereof
  • Lipopeptide modified nano zinc oxide as well as synthesis method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A method for synthesizing a lipopeptide-modified nano-zinc oxide of the present embodiment, comprising the following steps:

[0035] (1) Add 100 mL of deionized water to a 250 mL four-necked flask equipped with a stirring paddle and a thermometer, then add 4.4 g of zinc acetate dihydrate and continue stirring for 30 min to obtain a zinc salt solution and heat up to 60°C.

[0036] (2) Dissolve lipopeptide and sodium hydroxide in water, prepare lipopeptide (80 mg / L)-sodium hydroxide solution (0.4 mol / L), and raise the temperature to 60°C.

[0037] (3) The lipopeptide-sodium hydroxide solution was added dropwise to the zinc salt solution until the pH was 10.5. After the reaction for 2 h, the product was filtered with a microporous membrane and washed with deionized water until neutral. The obtained powder was heated at 100 °C After drying for 24h, lipopeptide-modified nano-zinc oxide was obtained.

[0038] After the nano-zinc oxide formed in the solution is wrapped by lip...

Embodiment 2

[0040] A method for synthesizing a lipopeptide-modified nano-zinc oxide of the present embodiment, comprising the following steps:

[0041](1) Add 100 mL of deionized water to a 250 mL four-necked flask equipped with a stirring paddle and a thermometer, then add 2.7 g of zinc chloride and continue stirring for 30 min to obtain a zinc salt solution and heat up to 60°C.

[0042] (2) Dissolve lipopeptide and sodium hydroxide in water, prepare lipopeptide (80 mg / L)-sodium hydroxide solution (0.4 mol / L), and raise the temperature to 60°C.

[0043] (3) The lipopeptide-sodium hydroxide solution was added dropwise to the zinc salt solution until the pH was 10.5. After the reaction for 2 h, the product was filtered with a microporous membrane and washed with deionized water until neutral. The obtained powder was heated at 100 °C After drying for 24h, lipopeptide-modified nano-zinc oxide was obtained.

[0044] Infrared and SEM results showed that the synthesized nanoparticles were simi...

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Abstract

The invention belongs to the technical field of daily chemical materials, and discloses lipopeptide modified nano zinc oxide as well as a synthesis method and application thereof. The synthesis method comprises the following steps: (1) dissolving zinc salt in water to obtain a zinc salt solution, and then heating to 60-90 DEG C; (2) dissolving lipopeptide and alkali in water to obtain a lipopeptide alkali solution, and then heating to 60-90 DEG C; and (3) dropwise adding the lipopeptide alkali solution into the zinc salt solution, adjusting the pH value of the reaction solution to 9-12, reacting, and filtering, washing and drying the reaction product to obtain the lipopeptide modified nano zinc oxide. According to the method disclosed by the invention, a biosurfactant lipopeptide is used as a dispersing agent and a surface modifier for synthesizing the nano zinc oxide, and the surface of the particle is modified to improve the biocompatibility of the nano zinc oxide while the zinc oxide nano particles are synthesized. The sunscreen composition can be used for water-based or oil-based safety sunscreen products.

Description

technical field [0001] The invention belongs to the technical field of daily chemical materials, and particularly relates to a lipopeptide-modified nano-zinc oxide and a synthesis method and application thereof. Background technique [0002] Nano-zinc oxide (ZnO) is known in the art as a widely used physical sunscreen agent, which can play a sunscreen effect through the reflection, refraction and scattering of ultraviolet rays. In order to avoid whitening caused by zinc oxide smearing, zinc oxide nano-ization has become the main direction of the development of physical sunscreens in recent years. Although inorganic sunscreens have higher safety than organic sunscreens, nano-sized physical sunscreens have also raised consumer concerns about the safety of their use. On the one hand, the high specific surface area of ​​nanoparticles leads to their higher photochemical activity; on the other hand, the small particle size also has concerns about the potential risk of being absor...

Claims

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Application Information

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IPC IPC(8): C01G9/02A61K8/27A61Q17/04B82Y40/00
CPCC01G9/02A61K8/27A61Q17/04B82Y40/00C01P2002/72C01P2004/03C01P2002/82C01P2002/84C01P2004/64
Inventor 周东李泽勇
Owner GUANGZHOU TINCI MATERIALS TECH
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