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Long-acting mildew-proof polyacrylate modified casein composite emulsion and preparation method thereof

The technology of polyacrylate and composite emulsion is applied in the field of anti-mildew materials, which can solve the problem of easy mildew of casein emulsion, and achieve the effects of economical and feasible raw materials, simple process method and cheap raw materials.

Inactive Publication Date: 2015-11-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a long-acting mildew-proof polyacrylate modified casein composite emulsion and its preparation method, which solves the defect that the casein emulsion is easy to mildew after film formation

Method used

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  • Long-acting mildew-proof polyacrylate modified casein composite emulsion and preparation method thereof
  • Long-acting mildew-proof polyacrylate modified casein composite emulsion and preparation method thereof
  • Long-acting mildew-proof polyacrylate modified casein composite emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Step 1: Preparation of dopamine-coated modified drug-loaded hollow ZnO composite antifungal agent:

[0045] Weigh 0.01g of hollow ZnO microspheres and place them in a 10mL volumetric flask filled with 2-thiocyanomethylthiobenzothiazole solution with a mass volume concentration of 1.13g / mL, adjust the pH of the system to 8.5, and the solution temperature to 40°C , shake well, then age for 24 hours, centrifuge and dry the precipitate to obtain drug-loaded hollow ZnO;

[0046]Take 0.01g of drug-loaded hollow ZnO and place it in a volumetric flask filled with 10mL of dopamine solution with a mass volume concentration of 5.0mg / mL, adjust the pH of the system to 8, and place the volumetric flask in a water bath with a temperature of 37°C and a speed of 160r / min. Shake in a water-bath shaker for 6 hours, and finally, centrifuge and place the precipitate in an oven at 40°C for 10 hours, that is, dopamine-coated modified drug-loaded hollow ZnO composite antifungal agent;

[004...

Embodiment 2

[0058] Step 1: Preparation of dopamine-coated modified drug-loaded hollow ZnO composite antifungal agent:

[0059] Weigh 0.01g of hollow ZnO microspheres and place them in a 10mL volumetric flask filled with 2-thiocyanomethylthiobenzothiazole solution with a mass volume concentration of 2.06g / mL, adjust the pH of the system to 7, and the solution temperature to 50°C , shake well, then age for 24 hours, centrifuge and dry the precipitate to obtain drug-loaded hollow ZnO;

[0060] Take 0.01g of drug-loaded hollow ZnO and place it in a volumetric flask filled with 10mL of dopamine solution with a mass volume concentration of 3.0mg / mL, adjust the pH of the system to 8, and place the volumetric flask in a water bath with a temperature of 37°C and a speed of 160r / min. Shake in a water bath shaker for 6 hours, and finally, centrifuge and place the precipitate in an oven at 30°C for 11 hours, that is, dopamine-coated modified drug-loaded hollow ZnO composite antifungal agent;

[0061...

Embodiment 3

[0072] Step 1: Preparation of dopamine-coated modified drug-loaded hollow ZnO composite antifungal agent:

[0073] Weigh 0.01g of hollow ZnO microspheres and place them in a 10mL volumetric flask filled with 2-thiocyanomethylthiobenzothiazole solution with a mass volume concentration of 3g / mL, adjust the pH of the system to 6, and the solution temperature to 60°C. Shake well, then age for 24 hours, centrifuge and dry the precipitate to obtain drug-loaded hollow ZnO;

[0074] Take 0.01g of drug-loaded hollow ZnO and place it in a volumetric flask filled with 10mL of dopamine solution with a mass volume concentration of 1.0mg / mL, adjust the pH of the system to 8.5, and place the volumetric flask in a water bath with a temperature of 37°C and a speed of 160r / min. Shake in a water bath shaker for 6 hours, and finally, centrifuge and place the precipitate in an oven at 25°C for 12 hours, that is, dopamine-coated modified drug-loaded hollow ZnO composite antifungal agent;

[0075] ...

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Abstract

The invention relates to a long-acting mildew-proof polyacrylate modified casein composite emulsion and a preparation method thereof. If being used as a mildew preventive, a casein emulsion easily mildews after forming a film. The preparation method comprises the steps of placing hollow ZnO microspheres into a 2-thiocyanomethylthio)benzothiazole solution, aging and centrifugally drying to obtain medicine-carrying hollow ZnO, placing the medicine-carrying hollow ZnO into a dopamine solution, oscillating in a water bath, and centrifugally drying to obtain a dopamine-coated modified medicine-carrying hollow ZnO composite mildewcide; and dropwise adding triethanolamine into a casein water solution, filtering, adding water, heating, adding a caprolactam solution in twice, dropwise adding a butyl acrylate and methyl methacrylate mixed solution and an ammonium persulfate solution to obtain a polyacrylate modified casein emulsion, adding a dopamine-coated modified medicine-carrying hollow ZnO composite mildewcide solution into the emulsion, and carrying out ultrasonic treatment to obtain the long-acting mildew-proof polyacrylate modified casein composite emulsion. A long-acting mildew-proof polyacrylate modified casein composite film prepared from the long-acting mildew-proof polyacrylate modified casein composite emulsion has the aspergillus flavus inhibition zone of 19mm (the diameter of the composite film is 15mm) and has a relatively good mildew-proof effect.

Description

technical field [0001] The invention relates to a mold-proof material, in particular to a long-acting mold-proof polyacrylate modified casein composite emulsion and a preparation method thereof. Background technique [0002] Organic antifungal agents are widely used because of their high-efficiency antibacterial properties, but organic antibacterial agents often have problems such as poor thermal stability and easy migration, which greatly limit their application range. In order to improve the above defects of organic antibacterial agents, the development of antibacterial agents with slow-release, long-acting, and low-toxicity characteristics has become a hot spot in basic research. In recent years, ZnO antimicrobial agents have rapidly become a research hotspot for new antibacterial agents due to their non-toxic, non-migratory, ability to absorb and scatter ultraviolet rays, high thermal and chemical stability, and wide source of raw materials. Moreover, ZnO has various mo...

Claims

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Application Information

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IPC IPC(8): C08J3/07C08L89/00C08L33/12C08K9/10C08K3/22
Inventor 刘俊莉惠爱平马建中曹金花
Owner SHAANXI UNIV OF SCI & TECH
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