CN112679895A - Preparation method of multipurpose environment-friendly antibacterial film - Google Patents
Preparation method of multipurpose environment-friendly antibacterial film Download PDFInfo
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- CN112679895A CN112679895A CN202011589482.0A CN202011589482A CN112679895A CN 112679895 A CN112679895 A CN 112679895A CN 202011589482 A CN202011589482 A CN 202011589482A CN 112679895 A CN112679895 A CN 112679895A
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Abstract
A preparation method of a multipurpose environment-friendly antibacterial film is disclosed, wherein the film is prepared from the following components: polyvinyl alcohol, plasticizer, release agent, bactericide and water. Adding polyvinyl alcohol and water into a reactor in a metering manner, stirring, heating to 90 ℃ to form uniform liquid, then cooling to 40 ℃, adding auxiliary agents such as a plasticizer, a release agent, a bactericide and the like in a metering manner, continuously stirring to form the uniform liquid, and then scraping and drying to obtain the antibacterial film. The film material prepared by the invention has the functions of killing bacteria and preventing mildew, has lasting antibacterial property, can be used for various purposes in the antibacterial field, and has complete degradability, environmental protection and green. Can be used for food packaging, antibacterial film sticking, fresh-keeping bags, medicine packaging and the like, and has the advantages of low preparation cost, simple method, no toxicity and no harm.
Description
Technical Field
The invention belongs to the technical field of biological materials, and particularly relates to a preparation method of a multipurpose environment-friendly antibacterial film.
Background
Along with the improvement of the living standard of people, the application range of the film material is more and more extensive, at present, the film material that is used in most on the market is made for materials such as polyethylene, polypropylene, polyvinyl chloride, polyester, the film of above-mentioned material only can satisfy certain demand, can't satisfy some special requirements, for example, food package, vegetables keep fresh, satisfy the fruit vegetables and change season and store, long-distance transport, practical requirement such as export, the film material that has certain function is also more and more simultaneously, for example, have antibiotic, mould proof, antibiotic special film material also receives more and more people's liking. For example, in patent CN107936416A, polyvinyl chloride resin, acetyl citric acid, antibacterial drugs, nano tourmaline powder, antioxidant, etc. are used to prepare medical antibacterial film material. CN109422893A, the long alkyl antibacterial coating agent is coated on the surface of the corona film to obtain the antibacterial film. CN110564122A, Tianjin science and technology university, a novel degradable antibacterial film and preparation thereof, adopting PCL (polycaprolactone) and PHBV (polyhydroxyalkanoate) as raw materials, adding green plasticizer ATBC (acetyl tributyl citrate) and antibacterial agent CMCS (carboxymethyl chitosan), and using high temperature hot pressing to form a film.
Polyvinyl alcohol (PVA) is a water-soluble synthetic high molecular polymer, has a large number of hydroxyl groups among molecules, has the characteristics of better water absorption, excellent gas barrier property, no toxicity, high degradation speed and the like, and is an environment-friendly material compared with food packaging materials such as polyethylene, polyvinyl chloride and the like which are used in large quantities in the market at present. Modification studies have been carried out by researchers. Such as patent CN111607179A, modified TiO2The Ag-TiO2 modified polyvinyl alcohol antibacterial film is prepared from modified nano silver, an activating agent, a condensing agent, chitosan, polyvinyl alcohol and a cross-linking agent according to a certain formula; CN106633161A, silk is processed by sericin solution with high temperature and high pressure, then blended with prepared polyvinyl alcohol solution, and is frozen-thawed to obtain sericin-polyAnd (3) mixing the gel with vinyl alcohol, drying to obtain a sericin-polyvinyl alcohol blended film, then placing the film in a silver nitrate solution, and obtaining the nano-silver loaded sericin-polyvinyl alcohol blended antibacterial film by using an ultraviolet radiation ring-source method.
The traditional antibacterial film on the market is prepared by directly coating an antibacterial component on the surface of the film, and the antibacterial film is prepared by bonding an antibacterial agent solution on the surface of a base film and an intermediate material. In addition, silver ions are often used as an antibacterial active substance and are not degradable.
In view of the above, there is a strong need in the market for a better antibacterial film material to overcome the deficiencies of the prior art.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a preparation method of a multipurpose environment-friendly antibacterial film, the prepared film material has the functions of sterilization and mildew prevention, has lasting antibacterial property, can be used for various purposes in the antibacterial field, such as food packaging, antibacterial films, freshness protection bags and the like, and has the advantages of low preparation cost, simple method, no toxicity and no harm.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation method of a multipurpose environment-friendly antibacterial film is characterized by comprising the following steps:
step 1, weighing 100g of water-soluble polyvinyl alcohol particles, adding the water-soluble polyvinyl alcohol particles into a 1000ml flask filled with 800ml of distilled water, putting the flask into a 90 ℃ constant-temperature water bath, and stirring the mixture until a homogeneous solution is formed;
step 2, cooling the solution to 40 ℃, sequentially adding a plasticizer, a release agent and a bactericide, and continuously stirring for 1h to obtain a uniform solution;
and 3, standing the membrane liquid, vacuumizing to remove bubbles, scraping the membrane on a glass plate, drying, and then uncovering the membrane to obtain the antibacterial membrane.
The polymerization degree of the polyvinyl alcohol is 500-2000, and one or more of partial alcoholysis type polyvinyl alcohol and complete alcoholysis type polyvinyl alcohol are adopted, wherein the partial alcoholysis type polyvinyl alcohol means that the alcoholysis degree is 85-95%.
The plasticizer is glycerol.
The bactericide is one or a mixture of more of ethylhexyl glycerol, 1, 2-benzisothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, polyhexamethylene monoguanidine, 2-bromo-2-nitro-1, 3-propanediol, phenoxyethanol, octanediol, polyhexamethylene biguanide and the like in any proportion.
The release agent is silicone oil, polyethylene glycol or sodium dodecyl benzene sulfonate, and preferably polyethylene glycol.
The mass of the plasticizer glycerol is 0.1-1.5% of the mass of the membrane liquid, and preferably 0.8-1.0%.
The total amount of the bactericide is 0.01-0.3% of the mass of the membrane liquid, and preferably 0.05-0.1%.
The using amount of the release agent is 0.1-1.2% of the mass of the membrane liquid, and preferably 0.5-0.8%.
The drying temperature is 40-70 ℃, and preferably 60 ℃.
The drying time is 1-4 h, preferably 2 h.
The invention has the beneficial effects that:
the film material prepared by the invention has the functions of killing bacteria and preventing mildew, has lasting antibacterial property, can be used for various purposes in the antibacterial field, such as food packaging, freshness protection packages, medicine packaging and the like, and has the advantages of low preparation cost, simple method, no toxicity and no harm.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
Weighing 100g of 1799-grade water-soluble polyvinyl alcohol powder, adding the powder into a 1000ml flask filled with 800ml of distilled water, putting the flask into a 90 ℃ constant-temperature water bath, and stirring to form a homogeneous solution; cooling the solution to 40 ℃, sequentially adding 8g of glycerol, 6g of polyethylene glycol, 0.3g of ethylhexyl glycerol and 0.6g of polyhexamethylene guanidine, and continuously stirring for 1 hour to obtain a uniform solution; and standing the membrane liquid, vacuumizing to remove bubbles, scraping the membrane on a glass plate which is cleaned in advance, drying in an oven at 60 ℃ for 3h, taking out and uncovering the membrane to obtain the antibacterial film.
Example 2
Weighing 100g of 1799-grade water-soluble polyvinyl alcohol powder, adding the powder into a 1000ml flask filled with 800ml of distilled water, putting the flask into a 90 ℃ constant-temperature water bath, and stirring to form a homogeneous solution; cooling the solution to 40 ℃, sequentially adding 9g of glycerol, 7g of polyethylene glycol, 0.3g of ethylhexyl glycerol, 0.4g of polyhexamethylene guanidine and 0.2g of 2-methyl-4-isothiazoline-3-ketone, and continuously stirring for 1h to obtain a uniform solution; and standing the membrane liquid, vacuumizing to remove bubbles, scraping the membrane on a glass plate which is cleaned in advance, drying in an oven at 60 ℃ for 3h, taking out and uncovering the membrane to obtain the antibacterial film.
Example 3
Weighing 100g of 1799-grade water-soluble polyvinyl alcohol powder, adding the powder into a 1000ml flask filled with 800ml of distilled water, putting the flask into a 90 ℃ constant-temperature water bath, and stirring to form a homogeneous solution; cooling the solution to 40 ℃, sequentially adding 8g of glycerol, 7g of polyethylene glycol, 0.2g of ethylhexyl glycerol and 0.7g of polyhexamethylene guanidine, and continuously stirring for 1h to obtain a uniform solution; and standing the membrane liquid, vacuumizing to remove bubbles, scraping the membrane on a glass plate which is cleaned in advance, drying in an oven at 60 ℃ for 3h, taking out and uncovering the membrane to obtain the antibacterial film.
Example 4
Weighing 100g of 1799-grade water-soluble polyvinyl alcohol powder, adding the powder into a 1000ml flask filled with 800ml of distilled water, putting the flask into a 90 ℃ constant-temperature water bath, and stirring to form a homogeneous solution; cooling the solution to 40 ℃, sequentially adding 9g of glycerol, 6g of polyethylene glycol, 0.5g of polyhexamethylene guanidine and 0.3g of 2-methyl-4-isothiazoline-3-ketone, and continuously stirring for 1h to obtain a uniform solution; and standing the membrane liquid, vacuumizing to remove bubbles, scraping the membrane on a glass plate which is cleaned in advance, drying in an oven at 60 ℃ for 3h, taking out and uncovering the membrane to obtain the antibacterial film.
Example 5
Weighing 100g of 1799-grade water-soluble polyvinyl alcohol powder, adding the powder into a 1000ml flask filled with 800ml of distilled water, putting the flask into a 90 ℃ constant-temperature water bath, and stirring to form a homogeneous solution; cooling the solution to 40 ℃, sequentially adding 9g of glycerol, 6g of polyethylene glycol, 0.5g of bronopol and 0.3g of polyhexamethylene guanidine, and continuously stirring for 1 hour to obtain a uniform solution; and standing the membrane liquid, vacuumizing to remove bubbles, scraping the membrane on a glass plate which is cleaned in advance, drying in an oven at the temperature of 60 ℃ for 2.5h, taking out and uncovering the membrane to obtain the antibacterial film.
In view of the above, it is desirable to provide,
the prepared film is subjected to antibacterial performance evaluation by adopting a film pasting method (QB/T2591-2003), common escherichia coli (ATCC 8379) and staphylococcus aureus (ATCC 6538P) are used for resisting bacteria, a polyvinyl alcohol film without an antibacterial agent is used as a blank film for comparison, and experimental data are shown in the following table.
According to the experimental results, the antibacterial film prepared by the embodiment of the invention has excellent antibacterial activity on escherichia coli and staphylococcus aureus, and the antibacterial film prepared by the components and the formula of the invention is proved to have strong antibacterial performance.
Claims (10)
1. A preparation method of a multipurpose environment-friendly antibacterial film is characterized by comprising the following steps:
step 1, weighing 100g of water-soluble polyvinyl alcohol particles, adding the water-soluble polyvinyl alcohol particles into a 1000ml flask filled with 800ml of distilled water, putting the flask into a 90 ℃ constant-temperature water bath, and stirring the mixture until a homogeneous solution is formed;
step 2, cooling the solution to 40 ℃, sequentially adding a plasticizer, a release agent and a bactericide, and continuously stirring for 1h to obtain a uniform solution;
and 3, standing the membrane liquid, vacuumizing to remove bubbles, scraping the membrane on a glass plate, drying, and then uncovering the membrane to obtain the antibacterial membrane.
2. The method for preparing a multipurpose environment-friendly antibacterial film according to claim 1, wherein the polymerization degree of the polyvinyl alcohol is 500-2000, and one or more of partially alcoholysis type polyvinyl alcohol and completely alcoholysis type polyvinyl alcohol are adopted, wherein the partially alcoholysis type polyvinyl alcohol means that the alcoholysis degree is 85-95%.
3. The method for preparing a multipurpose environmental-friendly antibacterial film according to claim 1, wherein the plasticizer is glycerol.
4. The method for preparing a multipurpose environment-friendly antibacterial film according to claim 1, wherein the bactericide is one or a mixture of more than one of ethylhexyl glycerol, 1, 2-benzisothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, polyhexamethylene monoguanidine, 2-bromo-2-nitro-1, 3-propanediol, phenoxyethanol, octanediol, polyhexamethylene biguanide and the like in any proportion.
5. The method for preparing a multipurpose environment-friendly antibacterial film according to claim 1, wherein the release agent is silicone oil, polyethylene glycol or sodium dodecyl benzene sulfonate, preferably polyethylene glycol.
6. The method for preparing a multipurpose environment-friendly antibacterial film according to claim 1, wherein the mass of the plasticizer glycerol is 0.1-1.5% of the mass of the film liquid.
7. The method for preparing a multipurpose environment-friendly antibacterial film according to claim 1, wherein the total amount of the bactericide is 0.01-0.3% of the film liquid by mass.
8. The method for preparing a multipurpose environment-friendly antibacterial film according to claim 1, wherein the using amount of the release agent is 0.1-1.2% of the mass of the film liquid.
9. The method for preparing a multipurpose environment-friendly antibacterial film according to claim 1, wherein the drying temperature is 40-70 ℃.
10. The method for preparing a multipurpose environment-friendly antibacterial film according to claim 1, wherein the drying time is 1-4 hours, preferably 2 hours.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205005A (en) * | 2013-03-15 | 2013-07-17 | 华南理工大学 | Anti-microbial and bacteriostatic preservative film and production method thereof |
| CN105924756A (en) * | 2016-05-19 | 2016-09-07 | 苏州倍力特物流设备有限公司 | Antibacterial packaging film and preparation method thereof |
| CN106519631A (en) * | 2016-11-28 | 2017-03-22 | 天津科技大学 | Antibacterial degradable food packaging material and preparation thereof |
| CN106751269A (en) * | 2016-12-08 | 2017-05-31 | 陕西易阳科技有限公司 | A kind of preparation method of Herba Origani Vulgaris quintessence oil polyvinyl alcohol antibacterial film |
| CN109265889A (en) * | 2018-10-19 | 2019-01-25 | 杭州中齐新材料科技有限公司 | A kind of degradable environment-friendly antibacterial packing film |
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- 2020-12-29 CN CN202011589482.0A patent/CN112679895A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205005A (en) * | 2013-03-15 | 2013-07-17 | 华南理工大学 | Anti-microbial and bacteriostatic preservative film and production method thereof |
| CN105924756A (en) * | 2016-05-19 | 2016-09-07 | 苏州倍力特物流设备有限公司 | Antibacterial packaging film and preparation method thereof |
| CN106519631A (en) * | 2016-11-28 | 2017-03-22 | 天津科技大学 | Antibacterial degradable food packaging material and preparation thereof |
| CN106751269A (en) * | 2016-12-08 | 2017-05-31 | 陕西易阳科技有限公司 | A kind of preparation method of Herba Origani Vulgaris quintessence oil polyvinyl alcohol antibacterial film |
| CN109265889A (en) * | 2018-10-19 | 2019-01-25 | 杭州中齐新材料科技有限公司 | A kind of degradable environment-friendly antibacterial packing film |
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Address after: No.61 Xiyan Road, Xi'an City, Shaanxi Province 710054 Applicant after: Shaanxi Chemical Research Institute Co.,Ltd. Address before: No.61 Xiyan Road, Xi'an City, Shaanxi Province 710054 Applicant before: SHAANXI RESEARCH DESIGN INSTITUTE OF PETROLEUM CHEMICAL INDUSTRY |
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