CN111387207A - High-molecular antibacterial and bactericidal composite film spraying agent and preparation method thereof - Google Patents
High-molecular antibacterial and bactericidal composite film spraying agent and preparation method thereof Download PDFInfo
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- CN111387207A CN111387207A CN202010184844.1A CN202010184844A CN111387207A CN 111387207 A CN111387207 A CN 111387207A CN 202010184844 A CN202010184844 A CN 202010184844A CN 111387207 A CN111387207 A CN 111387207A
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- antibacterial
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- composite film
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
Abstract
The invention discloses a high-molecular antibacterial and bactericidal composite film spraying agent and a preparation method thereof, and the high-molecular antibacterial and bactericidal composite film spraying agent comprises the following raw materials in parts by mass: 1-15 parts of high polymer material, 0.1-2 parts of carbon material, 0.1-2 parts of metal ion compound, 0.1-5 parts of antibacterial and bactericidal particles, 0.1-5 parts of dispersing agent, 0.1-0.5 part of freshener, 20-40 parts of deionized water and 30-60 parts of ethanol. The spray has simple preparation process, good biocompatibility, antibacterial property, bactericidal property and deodorization property, has broad-spectrum bactericidal property when being sprayed on the surfaces of materials such as masks, has high lethality of escherichia coli, bacillus subtilis, staphylococcus aureus and pseudomonas aeruginosa, has good air permeability and water absorption rate, and can remarkably improve the barrier rate of the masks to atmospheric fine particles.
Description
Technical Field
The invention relates to the field of medical sanitation prevention, in particular to a high-molecular antibacterial and bactericidal composite film spraying agent and a preparation method thereof.
Background
With the increasing development of national economy, the living standard of people is greatly improved, and the people pay more attention to the self health. However, in recent years, various chronic infectious diseases and non-infectious diseases have appeared, which pose serious threats to human health, and have become a focus of public attention. Thus, protection from viruses is of great significance.
Although people are aware of the importance of virus protection and can take protective tools such as masks and eyepieces when going out, the masks in the market are various, such as masks with breather valves, masks without breather valves, cotton masks with filter nets, disposable non-woven masks, disposable medical nursing masks, common cotton masks and the like. Meanwhile, although the traditional mask can block the droplets, the influenza viruses still stick on the surface layer of the mask through the droplets, so that the traditional mask does not have the function of killing bacteria, and the germs grow over time and gradually move from the outside to the inside, thereby causing great harm to the health of human bodies.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-molecular antibacterial and bactericidal composite film spraying agent and a preparation method thereof, and the antibacterial and bactericidal effect can be achieved only by spraying on an object to be sterilized.
According to one technical scheme of the invention, the high-molecular antibacterial and bactericidal composite film spraying agent comprises the following raw materials in parts by mass: 1-15 parts of high polymer material, 0.1-2 parts of carbon material, 0.1-2 parts of metal ion compound, 0.1-5 parts of antibacterial and bactericidal particles, 0.1-5 parts of dispersing agent, 0.1-0.5 part of freshener, 20-40 parts of deionized water and 30-60 parts of ethanol.
Preferably, the carbon material is selected from one or a mixture of more of activated carbon, graphene and carbon nanotubes;
preferably, the metal ionic compound is selected from one or a mixture of silver nitrate, zinc nitrate and copper nitrate;
preferably, the high molecular material is selected from one or a mixture of polyvinyl alcohol, polyethylene glycol, polypropylene glycol, polylactic acid, polycaprolactone and polycaprolactam;
preferably, the dispersant is selected from one or a mixture of more of polyvinylpyrrolidone, cellulose, sericin, citric acid and quaternary ammonium salt;
preferably, the cooling agent is selected from one or a mixture of 2-isopropyl-5-methylcyclohexanol, 5-methyl-2-isopropylcyclohexyl 2-hydroxypropionate, N-ethyl-p-menthyl-3-formamide and monomenthyl succinate;
according to the second technical scheme, the preparation method of the high-molecular antibacterial and bactericidal composite film spraying agent comprises the following steps:
(1) under the action of ultrasound, uniformly dispersing carbon materials, antibacterial and bactericidal nanoparticles and metal ion compounds in a mixture solvent of deionized water and ethanol, and then adding a dispersing agent for stirring;
(2) transferring the solution into an ultraviolet reactor, heating to 80-120 ℃, and reacting for 2-6 hours;
(3) after the reaction is finished, cooling to 30-50 ℃, and slowly adding a high polymer material into the solution under the stirring condition to completely dissolve the high polymer material;
(4) cooling the reaction liquid to room temperature, adding a freshener, and continuously stirring for 10-30 minutes under the action of ultraviolet irradiation and ultrasound;
(5) and filtering the reaction solution to remove undissolved high polymer materials, impurities and the like to obtain the high polymer antibacterial bactericidal composite film spraying agent.
In the step (2), the ethanol reflux at 80-120 ℃ can promote the reduction of metal ion compounds, and the solution is placed in an ultraviolet reactor for reaction, so that on one hand, sterilization is performed to ensure the sterile environment in the preparation process of the product, and on the other hand, the polymer can be degraded under the action of ultraviolet to form free radicals, so that the dispersibility of the nanoparticles is better. After the reaction in step (2) is completed, the solution has a higher temperature, and the direct addition results in uneven mixing of the raw materials, so that the solution needs to be cooled to 30-50 ℃ before the mixing of the high molecular materials is performed.
According to the third technical scheme, the macromolecular antibacterial sterilizing composite film spraying agent is applied to the surface of an object to be sterilized to form an antibacterial film.
Preferably, the objects to be sterilized are a mask, an air conditioner filter screen and an air purifier filter screen.
Compared with the prior art, the invention has the following beneficial effects:
the high-molecular antibacterial sterilizing composite film spraying agent disclosed by the invention contains nanoparticles with antibacterial sterilizing functions, and also introduces a carbon material carrier and a metal ion compound, and the carbon material carrier and the metal ion compound are placed in an ultraviolet reactor to carry out in-situ reduction reaction, and in the in-situ reduction process, part of metal ions form a bridge between the carbon material and antibacterial sterilizing particles, so that the antibacterial sterilizing nanoparticles are adsorbed on the surface of the carbon material, and the antibacterial sterilizing efficiency of the carbon material is improved.
The prepared macromolecular antibacterial bactericidal composite film spraying agent can form fibers and liquid drops through a spraying method, so that a layer of porous protective film is formed on the surface of an object to be sterilized, and the use of macromolecular materials in the porous film raw material can form a protective film of a reticular substance on the surface when the antibacterial agent is sprayed on the surface of the object, and the antibacterial film has extremely long film forming durability, so that the long-acting antibacterial and bacteriostatic action of the antibacterial film is ensured.
The metal ion compound, the antibacterial particles, the ethanol and the like in the invention have excellent antibacterial and bacteriostatic properties, and the three have synergistic effects, so that the antibacterial and bacteriostatic effects are obviously improved, the antibacterial and bacteriostatic effects on staphylococcus aureus, enterobacter, hepatitis virus, candida albicans, various epidemic diseases, bacterial spores and the like are obvious, the sterilization rate can reach more than 98%, and the antibacterial and bacteriostatic agent is safe and nontoxic to a human body, and the product has double functions of antibacterial sterilization and faint scent air by being matched with proper freshener components.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Further, for numerical ranges in this disclosure, it is understood that each intervening value, to the upper and lower limit of that range, is also specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The description and examples are intended to be illustrative only.
Example 1
(1) Under the action of ultrasound, 1g of activated carbon, 0.1g of silver nanoparticles, 1.5g of silver nitrate and 0.5g of zinc nitrate are uniformly dispersed in a mixture solvent of 40g of deionized water and 60g of ethanol, and then 3g of polyvinylpyrrolidone is added and stirred;
(2) then transferring the solution into an ultraviolet reactor, heating to 80 ℃, and reacting for 2 hours;
(3) cooling to 50 ℃, and slowly adding 5g of polyvinyl alcohol into the solution under the stirring condition to completely dissolve the polyvinyl alcohol;
(4) naturally cooling to room temperature, adding 0.1g of 2-isopropyl-5-methylcyclohexanol, and continuously stirring for 10min under the action of ultraviolet irradiation and ultrasound;
(5) and filtering the reaction solution to remove undissolved high polymer materials, impurities and the like to obtain the high polymer antibacterial bactericidal composite film spraying agent.
Example 2
(1) Under the action of ultrasound, 1g of activated carbon, 2g of silver nanoparticles and 0.1g of silver nitrate are uniformly dispersed in a mixture solvent of 30g of deionized water and 60g of ethanol, and then 0.1g of polyvinylpyrrolidone is added for stirring;
(2) transferring the solution into an ultraviolet reactor, heating to 120 ℃, and reacting for 2 hours;
(3) after the reaction is finished, cooling to 50 ℃, and slowly adding 5g of polyvinyl alcohol into the solution under the stirring condition to completely dissolve the polyvinyl alcohol;
(4) cooling the reaction liquid to room temperature, adding 0.1g of 2-isopropyl-5-methylcyclohexanol, and continuously stirring for 10min under the action of ultraviolet irradiation and ultrasound;
(5) and filtering the reaction solution to remove undissolved high polymer materials, impurities and the like to obtain the high polymer antibacterial bactericidal composite film spraying agent.
Example 3
(1) Under the action of ultrasound, 0.2g of graphene, 1.5g of silver nanoparticles, 0.5g of titanium dioxide nanoparticles and 0.1g of silver nitrate are uniformly dispersed in a mixture solvent of 10g of deionized water and 60g of ethanol, and then 0.1g of sericin is added and stirred;
(2) transferring the solution into an ultraviolet reactor, heating to 80 ℃, and reacting for 2 hours;
(3) after the reaction is finished, cooling to 50 ℃, and slowly adding 1g of polycaprolactone into the solution under the stirring condition to completely dissolve the polycaprolactone;
(4) cooling the reaction solution to room temperature, adding 0.1g of 2-hydroxypropionic acid-5-methyl-2-isopropyl cyclohexyl, and continuously stirring for 10min under the action of ultraviolet irradiation and ultrasound;
(5) and filtering the reaction solution to remove undissolved high polymer materials, impurities and the like to obtain the high polymer antibacterial bactericidal composite film spraying agent.
Example 4
(1) Under the action of ultrasound, 0.2g of carbon nano tube, 1g of titanium dioxide nano particle and 1g of silver nitrate are uniformly dispersed in a mixture solvent of 20g of deionized water and 60g of ethanol, and then 3g of citric acid is added for stirring;
(2) transferring the solution into an ultraviolet reactor, heating to 100 ℃, and reacting for 2 hours;
(3) after the reaction is finished, cooling to 50 ℃, and slowly adding 10g of polyethylene glycol and 5g of polyvinyl alcohol into the solution under the stirring condition to completely dissolve the polymer;
(4) cooling the reaction solution to room temperature, adding 0.1g monomenthyl succinate, and continuously stirring for 10min under the action of ultraviolet irradiation and ultrasound;
(5) and filtering the reaction solution to remove undissolved high polymer materials, impurities and the like to obtain the high polymer antibacterial bactericidal composite film spraying agent.
Comparative example 1
The difference from example 1 is that the raw material does not contain activated carbon;
comparative example 2
The same as example 1 except that the raw material does not contain silver nitrate and zinc nitrate;
comparative example 3
The difference from example 1 is that the raw material does not contain silver nanoparticles;
comparative example 4
The difference from example 1 is that the starting material does not contain polyvinyl alcohol.
Effect verification
30 medical surgical masks were prepared and divided into 10 groups of 3, and the polymeric antibacterial bactericidal composite film spray agents prepared in examples 1 to 4 and comparative examples 1 to 4 and 75% alcohol were sprayed on the outer surfaces of the masks, respectively, and the remaining group was used as a blank test. Testing the immediate antibacterial rate, the antibacterial rate after 8 hours of air exposure and the filtering performance of 10 groups of masks, wherein the immediate antibacterial rate and the antibacterial rate after 8 hours of air exposure refer to a bacterial filtering efficiency testing method in YY 0469 plus 2004 medical surgery mask technical requirement to test the filtering effect of the masks on microbial aerosol, a testing device adopts a microbial aerosol filtering efficiency testing platform, and a testing medium is drug-resistant staphylococcus aureus); the filtering performance is tested by referring to a method in GB 19083-2003 medical protective mask technical requirement, a TSI8130 automatic filter material tester is adopted as a testing device, counting NaCl particles with the median diameter of (0.075 +/-0.020) mum) is adopted as a medium for detection, and the detection result is shown in Table 1:
TABLE 1
The table 1 shows that the product has a strong antibacterial and bacteriostatic effect, and a layer of net-shaped film is formed on the surface of the mask after the surface of the mask is sprayed, so that the mask can be endowed with an antibacterial and bactericidal effect, the breeding and the infiltration of bacteria are hindered, the blocking efficiency of the mask on haze particles can be improved, and the body health of people can be protected. Meanwhile, the product has stronger antibacterial and bacteriostatic effects under the combined action of the carbon material, the antibacterial and bactericidal particles and the metal ion compound, and the final antibacterial and bacteriostatic effect can be influenced by the lack of any substance.
Claims (9)
1. The high-molecular antibacterial and bactericidal composite film spraying agent is characterized by comprising the following raw materials in parts by mass: 1-15 parts of high polymer material, 0.1-2 parts of carbon material, 0.1-2 parts of metal ion compound, 0.1-5 parts of antibacterial and bactericidal particles, 0.1-5 parts of dispersing agent, 0.1-0.5 part of freshener, 20-40 parts of deionized water and 30-60 parts of ethanol.
2. The polymeric antibacterial bactericidal composite film spraying agent as claimed in claim 1, wherein the carbon material is selected from one or a mixture of more of activated carbon, graphene and carbon nanotubes.
3. The polymeric antibacterial bactericidal composite film spraying agent as claimed in claim 1, wherein the metal ion compound is one or a mixture of several of silver nitrate, zinc nitrate and copper nitrate.
4. The high molecular antibacterial bactericidal composite film spraying agent as claimed in claim 1, wherein the high molecular material is selected from one or a mixture of more of polyvinyl alcohol, polyethylene glycol, polypropylene glycol, polylactic acid, polycaprolactone and polycaprolactam.
5. The high molecular antibacterial sterilizing composite film spraying agent as claimed in claim 1, wherein the dispersing agent is one or a mixture of several selected from polyvinylpyrrolidone, cellulose, sericin, citric acid and quaternary ammonium salt.
6. The high molecular antibacterial sterilizing composite film spraying agent according to claim 1, wherein the cooling agent is one or a mixture of 2-isopropyl-5-methylcyclohexanol, 5-methyl-2-isopropylcyclohexyl 2-hydroxypropionate, N-ethyl-p-menthyl-3-carboxamide and monomenthyl succinate.
7. A preparation method of the high molecular antibacterial bactericidal composite film spraying agent according to any one of claims 1 to 6, which is characterized by comprising the following steps:
(1) under the action of ultrasound, uniformly dispersing carbon materials, antibacterial and bactericidal nanoparticles and metal ion compounds in a mixture solvent of deionized water and ethanol, and then adding a dispersing agent for stirring;
(2) transferring the solution into an ultraviolet reactor, heating to 80-120 ℃, and reacting for 2-6 hours;
(3) after the reaction is finished, cooling to 30-50 ℃, and slowly adding a high polymer material into the solution under the stirring condition to completely dissolve the high polymer material;
(4) cooling the reaction liquid to room temperature, adding a freshener, and continuously stirring for 10-30 minutes under the action of ultraviolet irradiation and ultrasound;
(5) and filtering the reaction solution to remove undissolved high polymer materials, impurities and the like to obtain the high polymer antibacterial bactericidal composite film spraying agent.
8. The application of the high-molecular antibacterial and bactericidal composite film spraying agent as claimed in any one of claims 1 to 6, wherein the high-molecular antibacterial and bactericidal composite film spraying agent is sprayed on the surface of an object to be sterilized to form an antibacterial and bacteriostatic film.
9. The application of the high molecular antibacterial bactericidal composite film spraying agent as claimed in claim 8, wherein the objects to be sterilized are a mask, an air conditioner filter screen and an air purifier filter screen.
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| CN112640914A (en) * | 2020-12-22 | 2021-04-13 | 江苏瞪羚科技有限公司 | Novel disinfectant special for pets and preparation method thereof |
| CN114042386A (en) * | 2021-12-01 | 2022-02-15 | 湖南工程学院 | Polymer separation membrane material for filter mask and preparation method thereof |
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Application publication date: 20200710 |