Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of cationic custard-apple-shaped acrylate copolymer antibacterial microspheres

A cationic, acrylate technology, used in botanical equipment and methods, chemicals for biological control, fungicides, etc., can solve the problems of dispersion of antibacterial active centers, low effective antibacterial performance, etc., and achieve long-term antibacterial performance. And lasting, make up for market vacancies, the effect of simple process

Active Publication Date: 2020-06-02
NORTHWEST NORMAL UNIVERSITY
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zheng He et al. (invention patent CN 110325606 A) disclosed an antibacterial polymer coating composition and antibacterial polymer film doped with a photosensitizer, but the antibacterial material can only maintain high antibacterial activity for a long time in the visible light region
[0005] Although the currently disclosed polymer antibacterial agents have the characteristics of low toxicity and environmental friendliness, their effective antibacterial properties are not high due to the dispersion of antibacterial active centers.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of cationic custard-apple-shaped acrylate copolymer antibacterial microspheres
  • Preparation method of cationic custard-apple-shaped acrylate copolymer antibacterial microspheres
  • Preparation method of cationic custard-apple-shaped acrylate copolymer antibacterial microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of embodiment 1 cationic custard fruit shape acrylate copolymer antibacterial microspheres, comprises the following steps:

[0036] ⑴In parts by mass (g), mix 1.75 parts of comonomer, 0.38 parts of acrylamidopropyltrimethylammonium chloride, and 0.02 parts of methacryloxypropyltrimethoxysilane, and then add 0.01 parts Potassium persulfate and mix thoroughly to obtain a mixed solution.

[0037] Wherein: the comonomer refers to a mixture of 1.00 parts of methyl methacrylate and 0.35 parts of N-vinylpyrrolidone.

[0038] (2) Under constant mechanical stirring at 200 r / min, use a peristaltic pump to slowly add the mixed solution at a rate of 0.3 mL / min to deionized water 10 times its mass at a temperature of 60°C. Continue to stir and polymerize at ℃ for 6 h to obtain the reactant.

[0039] (3) After the reactant is cooled to room temperature, it is filtered to remove the condensate and obtain an emulsion.

[0040] (4) Centrifuge the emulsion at a ...

Embodiment 2

[0041] The preparation method of embodiment 2 cationic custard fruit shape acrylate copolymer antibacterial microspheres, comprises the following steps:

[0042] (1) In parts by mass, uniformly mix 7.00 parts of comonomer, 1.50 parts of methacrylamidopropyltrimethylammonium chloride, and 0.85 parts of methacryloxypropyltrimethoxysilane, and then add 0.23 parts of ammonium sulfate and mix well to obtain a mixed solution.

[0043] Wherein: the comonomer refers to a mixture of 1.00 parts of methyl methacrylate and 0.75 parts of N-vinylpyrrolidone.

[0044] (2) Under constant mechanical stirring at 450 r / min, slowly drop the mixed solution at a rate of 1.0 mL / min using a peristaltic pump into deionized water 12 times its mass at a temperature of 90°C. Continue to stir and polymerize at ℃ for 2h to obtain the reactant.

[0045] (3) After the reactant is cooled to room temperature, it is filtered to remove the condensate and obtain an emulsion.

[0046] (4) After the emulsion was...

Embodiment 3

[0047] The preparation method of embodiment 3 cationic custard fruit shape acrylate copolymer antibacterial microspheres, comprises the following steps:

[0048] ⑴In parts by mass, uniformly mix 3.00 parts of comonomer, 0.80 parts of acrylamidopropyltrimethylammonium bromide, and 0.15 parts of methacryloxypropyltrimethoxysilane, and then add 0.06 parts of potassium persulfate And fully mixed to obtain a mixed solution.

[0049] Wherein: the comonomer refers to a mixture of 1.00 parts of methyl methacrylate and 0.45 parts of N-vinylpyrrolidone.

[0050] (2) Under constant mechanical stirring at 300 r / min, slowly drop the mixed solution at a rate of 0.5 mL / min using a peristaltic pump into deionized water 17 times its mass at a temperature of 70°C. Continue to stir and polymerize at ℃ for 5 h to obtain the reactant.

[0051] (3) After the reactant is cooled to room temperature, it is filtered to remove the condensate and obtain an emulsion.

[0052] (4) After the emulsion was...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of cationic custard-apple-shaped acrylate copolymer antibacterial microspheres. The method comprises the following steps: (1) uniformly mixing a comonomer, a quaternary ammonium salt cationic acrylic monomer and a crosslinking monomer, and then, adding an initiator and sufficiently mixing to obtain a mixed solution; (2) slowly dropwise adding the mixedsolution into deionized water while stirring at a constant speed, and carrying out continuous stirring and polymerizing for 2-6 hours after dropwise adding to obtain a reactant; (3) cooling the reactant to room temperature, carrying out filtering, and removing condensates to obtain an emulsion; and (4) carrying out centrifugal separation on the emulsion and washing to obtain the required product.The process is simple and safe, and the obtained cationic custard-apple-shaped acrylate copolymer antibacterial microspheres can make up the market vacancy, and can be popularized to be used as a fabric antibacterial agent, an automobile coating, a plastic decorative material, a floor, a ceramic product and an antibacterial agent of household appliances, as well as antibacterial and anticorrosiveproducts of water-based paint, ink, dye, an adhesive and the like.

Description

technical field [0001] The invention relates to the technical field of polymer antibacterial agents, in particular to a preparation method of cationic custard fruit-like acrylate copolymer antibacterial microspheres. Background technique [0002] Bacteria are a typical harmful microorganism. The number of clinical cases of infection caused by pathogenic bacteria is increasing day by day, which has become a public health problem of global concern. The occurrence of pathogenic bacteria, such as fungi and bacteria, can have extremely serious consequences, including fatal diseases, increased patient mortality, and expensive medical expenses. Antibacterial materials refer to a new class of functional materials that have the function of killing or inhibiting microorganisms. They have extremely broad application prospects in the medical field, household goods, household appliances, food packaging and other fields. Today, people's requirements for environmental sanitation are increa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F226/08C08F220/60C08F230/08A01N55/10A01P1/00A01P3/00
CPCA01N55/00C08F2/22C08F220/14C08F226/08C08F220/60C08F230/08
Inventor 王荣民李雪梅王斌何玉凤李文斌李俊男
Owner NORTHWEST NORMAL UNIVERSITY