CN113717483A - Polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and preparation method thereof - Google Patents
Polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and preparation method thereof Download PDFInfo
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- CN113717483A CN113717483A CN202111065446.9A CN202111065446A CN113717483A CN 113717483 A CN113717483 A CN 113717483A CN 202111065446 A CN202111065446 A CN 202111065446A CN 113717483 A CN113717483 A CN 113717483A
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- polyvinyl alcohol
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- cobalt complex
- ultraviolet blocking
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- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 50
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 50
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 29
- 230000000903 blocking effect Effects 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 150000004700 cobalt complex Chemical class 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000013078 crystal Substances 0.000 claims abstract description 21
- FDGBQHCDMSYZRC-UHFFFAOYSA-N 2-hydroxy-2-oxo-1,3,2$l^{5}-dioxaphosphinan-4-amine Chemical compound NC1CCOP(O)(=O)O1 FDGBQHCDMSYZRC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000001450 anions Chemical class 0.000 claims abstract description 4
- 229910001868 water Inorganic materials 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 26
- 239000006185 dispersion Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 7
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 7
- 239000012153 distilled water Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- XTOQOJJNGPEPMM-UHFFFAOYSA-N o-(2-oxo-1,3,2$l^{5}-dioxaphosphinan-2-yl)hydroxylamine Chemical compound NOP1(=O)OCCCO1 XTOQOJJNGPEPMM-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000009210 therapy by ultrasound Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000012046 mixed solvent Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 21
- 239000000463 material Substances 0.000 abstract description 19
- 229910021529 ammonia Inorganic materials 0.000 abstract description 9
- 230000004044 response Effects 0.000 abstract description 7
- 230000003287 optical effect Effects 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 13
- 239000004698 Polyethylene Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002114 nanocomposite Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000011365 complex material Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006136 alcoholysis reaction Methods 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910003471 inorganic composite material Inorganic materials 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0091—Complexes with metal-heteroatom-bonds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention belongs to the technical field of polymer composite materials, and relates to a polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and a preparation method thereof, wherein the polyvinyl alcohol composite material is prepared from the following raw materials: polyvinyl alcohol, cobalt complex crystal [ Co4(H8P3NC3O9)2]·H2O, in the formula (H)8P3NC3O9) The anion of 4 protons is lost for aminotrimethylene phosphate. The invention also provides a preparation method of the polyvinyl alcohol composite material. The polyvinyl alcohol composite material prepared by the invention has excellent ultraviolet barrier property, antibacterial property, ammonia response property, mechanical property, water vapor permeability and thermal stability, and can keep high optical transparency, andthe preparation process is simple, is suitable for large-scale production, and has potential application value in the fields of packaging, antibacterial materials, ammonia gas detection and the like.
Description
Technical Field
The invention belongs to the technical field of polymer composite materials, and particularly relates to a polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and a preparation method thereof.
Background
Coordination chemistry has abundant research contents, the research on the structure and the properties of the coordination chemistry is very important at present, and almost all fields relate to the coordination chemistry, wherein metal organic chemistry is an important research direction in the coordination chemistry. In recent years, many metal organic complexes with ultraviolet blocking and antibacterial functions have been developed, and the ultraviolet blocking and antibacterial effects are remarkable. The metal organic complex material can be better compatible with the polymer due to the function modifiability and the controllability of the structure of the metal organic complex material, and can conveniently realize the preparation of the organic/inorganic composite material.
Along with the continuous improvement of the quality of life of people and the increasing attention of people on the living environment, the traditional white plastic garbage causes great pollution to the human living environment, and therefore, the research of novel environment-friendly materials is urgent. The polyvinyl alcohol is a biodegradable material, is a non-toxic, non-corrosive and environment-friendly organic high molecular polymer, and has wide application prospect. However, the pure polyvinyl alcohol material lacks functions of ultraviolet blocking, antibiosis, ammonia response and the like, so that the practical application of the pure polyvinyl alcohol material is limited. The invention takes polyvinyl alcohol as a substrate and functional cobalt complex as a filler to prepare the composite material, thereby enhancing the ultraviolet barrier, antibacterial, ammonia response, mechanics, thermal stability and other properties of the polyvinyl alcohol and widening the application field thereof.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and a preparation method thereof. The composite material has excellent ultraviolet blocking performance, antibacterial performance, ammonia response performance, mechanical property, water vapor permeability, thermal stability and higher hygroscopicity, can keep high optical transparency, has simple preparation process, is environment-friendly and low in cost, and is suitable for amplification production.
The technical scheme of the invention is as follows:
the polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions is characterized by comprising the following components in parts by weight: 100 parts of polyvinyl alcohol and 3-12 parts of cobalt complex crystal;
the chemical formula of the cobalt complex crystal is H2O, in the formula (H)8P3NC3O9) The anion of 4 protons is lost for aminotrimethylene phosphate.
The preparation method of the cobalt complex crystal comprises the following steps:
dissolving cobalt nitrate in a mixed solvent of deionized water and DMF, stirring for 10min, uniformly mixing, slowly adding aminotrimethylene phosphoric acid, stirring and mixing for 1h, then placing the mixture in a reaction kettle, reacting for 48h at 140 ℃, cooling to room temperature, filtering, washing and drying to obtain a cobalt complex crystal;
the mass ratio of the cobalt nitrate to the aminotrimethylene phosphoric acid to the deionized water to the DMF is 15: 11: 200: 950.
a preparation method of a polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions comprises the following steps:
(1) dispersing 3-12 parts of cobalt complex crystals in 3000 parts of distilled water, performing ultrasonic treatment at room temperature for 1 hour, and stirring for 2 hours to obtain a cobalt complex uniform dispersion liquid for later use;
(2) adding 100 parts of polyvinyl alcohol into the cobalt complex uniform dispersion liquid obtained in the step (1), firstly stirring at room temperature for 1h, then heating to 85 ℃, stirring for 2h, and ultrasonically removing bubbles to obtain a uniform film forming liquid for later use;
(3) and (3) pouring the film forming liquid obtained in the step (2) into a flat-bottomed glass dish, and drying in a vacuum oven at 55 ℃ for 24 hours to obtain the polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions.
Compared with the prior art, the invention has the following beneficial effects:
the polyvinyl alcohol composite material prepared by the invention has excellent ultraviolet blocking performance, bacteriostatic performance, ammonia response performance, mechanical property, water vapor permeability, thermal stability and higher hygroscopicity, and can keep high optical transparency, and the preparation process is simple, is suitable for amplification production, and has potential application value in the fields of packaging, antibacterial materials, ammonia detection and the like.
Detailed Description
In order to better explain the present invention, the present invention is further explained in detail below with reference to specific examples, but the embodiments of the present invention are not limited thereto.
In the following specific examples and comparative formula and preparation method, the polyvinyl alcohol is a product provided by Shanghai Aladdin Biotechnology GmbH, with alcoholysis degree of 98-99 mol% and viscosity of 54.0-66 mPa.s; cobalt nitrate is an analytical pure-grade reagent provided by chemical corporation of Shirong; DMF (N, N-dimethylformamide) is an analytical pure grade reagent provided by chemical corporation, julong; aminotrimethylene phosphate was used as a product provided by Shanghai Michelin Biochemical technology Ltd.
In the following specific examples and comparative example formulations, preparation methods, the cobalt complex crystals have the chemical formula H2O, in the formula (H)8P3NC3O9) The preparation method of the amino trimethylene phosphate which loses 4-proton anions comprises the following steps:
dissolving cobalt nitrate in a mixed solvent of deionized water and DMF, stirring for 10min, uniformly mixing, slowly adding aminotrimethylene phosphoric acid, stirring and mixing for 1h, then placing the mixture in a reaction kettle, reacting for 48h at 140 ℃, cooling to room temperature, filtering, washing and drying to obtain a cobalt complex crystal;
the mass ratio of the cobalt nitrate to the aminotrimethylene phosphoric acid to the deionized water to the DMF is 15: 11: 200: 950.
example 1
The polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions is characterized by comprising the following components in parts by weight: 100 parts of polyvinyl alcohol and 3 parts of cobalt complex crystals.
The preparation method comprises the following steps:
(1) dispersing 3 parts of cobalt complex crystals in 3000 parts of distilled water, performing ultrasonic treatment at room temperature for 1 hour, and stirring for 2 hours to obtain a cobalt complex uniform dispersion liquid for later use;
(2) adding 100 parts of polyvinyl alcohol into the cobalt complex uniform dispersion liquid obtained in the step (1), firstly stirring at room temperature for 1h, then heating to 85 ℃, stirring for 2h, and ultrasonically removing bubbles to obtain a uniform film forming liquid for later use;
(3) and (3) pouring the film forming liquid obtained in the step (2) into a flat-bottomed glass dish, and drying in a vacuum oven at 55 ℃ for 24 hours to obtain the polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions.
Example 2
The polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions is characterized by comprising the following components in parts by weight: 100 parts of polyvinyl alcohol and 6 parts of cobalt complex crystals.
The preparation method comprises the following steps:
(1) dispersing 6 parts of cobalt complex crystals in 3000 parts of distilled water, performing ultrasonic treatment at room temperature for 1 hour, and stirring for 2 hours to obtain a cobalt complex uniform dispersion liquid for later use;
(2) adding 100 parts of polyvinyl alcohol into the cobalt complex uniform dispersion liquid obtained in the step (1), firstly stirring at room temperature for 1h, then heating to 85 ℃, stirring for 2h, and ultrasonically removing bubbles to obtain a uniform film forming liquid for later use;
(3) and (3) pouring the film forming liquid obtained in the step (2) into a flat-bottomed glass dish, and drying in a vacuum oven at 55 ℃ for 24 hours to obtain the polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions.
Example 3
The polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions is characterized by comprising the following components in parts by weight: 100 parts of polyvinyl alcohol and 9 parts of cobalt complex crystals.
The preparation method comprises the following steps:
(1) dispersing 9 parts of cobalt complex crystals in 3000 parts of distilled water, performing ultrasonic treatment at room temperature for 1 hour, and stirring for 2 hours to obtain a cobalt complex uniform dispersion liquid for later use;
(2) adding 100 parts of polyvinyl alcohol into the cobalt complex uniform dispersion liquid obtained in the step (1), firstly stirring at room temperature for 1h, then heating to 85 ℃, stirring for 2h, and ultrasonically removing bubbles to obtain a uniform film forming liquid for later use;
(3) and (3) pouring the film forming liquid obtained in the step (2) into a flat-bottomed glass dish, and drying in a vacuum oven at 55 ℃ for 24 hours to obtain the polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions.
Example 4
The polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions is characterized by comprising the following components in parts by weight: 100 parts of polyvinyl alcohol and 12 parts of cobalt complex crystals.
The preparation method comprises the following steps:
(1) dispersing 12 parts of cobalt complex crystals in 3000 parts of distilled water, performing ultrasonic treatment at room temperature for 1 hour, and stirring for 2 hours to obtain a cobalt complex uniform dispersion liquid for later use;
(2) adding 100 parts of polyvinyl alcohol into the cobalt complex uniform dispersion liquid obtained in the step (1), firstly stirring at room temperature for 1h, then heating to 85 ℃, stirring for 2h, and ultrasonically removing bubbles to obtain a uniform film forming liquid for later use;
(3) and (3) pouring the film forming liquid obtained in the step (2) into a flat-bottomed glass dish, and drying in a vacuum oven at 55 ℃ for 24 hours to obtain the polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions.
Comparative example
The preparation of pure polyvinyl alcohol material includes the following steps:
(1) adding 100 parts of polyvinyl alcohol into 3000 parts of true distilled water, stirring at room temperature for 1 hour, heating to 85 ℃, stirring for 2 hours, and ultrasonically removing bubbles to obtain uniform film forming liquid for later use;
(2) pouring the film-forming liquid obtained in the step (1) into a flat-bottomed glass dish, and drying in a vacuum oven at 55 ℃ for 24 hours to obtain the pure polyvinyl alcohol material.
And (3) performance testing:
the pure polyvinyl alcohol material prepared by the comparative example and the polyvinyl alcohol composite material prepared by the example are subjected to performance test, wherein the ultraviolet-visible performance is tested by using an ultraviolet-visible spectrometer (Lamdba365, platinum Elmer instruments Co., Ltd.), and the average transmittance of ultraviolet rays (UVA, UVB and UVC) is calculated by referring to GB/T18830-2009; tensile properties were tested according to GB/T1040-2006; the water vapor transmission coefficient is tested according to ASTM E96, and the thermal stability is measured by a thermal weight loss analyzer (SDT-Q600, TA company, USA); performing antibacterial property test of the material according to QBT 2591-2003;
the hygroscopicity test method is as follows:
a film sample having dimensions of 20mm by 0.1mm was placed in a vacuum oven at 40 ℃ and, after drying for 72 hours, the mass of the film sample (noted as M)0) (ii) a Then, the dried film sample was placed in a closed container at a relative humidity of 57% and a temperature of 25 ℃ for 48 hours, and the mass (denoted as M) of the film sample was measured1) (ii) a Moisture absorption (%) of the film sample was 100 ═ M (M)1-M0)/M0。
The ammonia response test method is as follows:
cutting the film material into a shape with a consistent size, then exposing the cut film material in an ammonia environment, and recording the color change information of the film material by using a high-quality computer color difference meter.
The above performance test data are shown in table 1.
Table 1 sample performance test data
The experimental result proves that the pure polyethylene material prepared by the comparative example is colorless and transparent, the color of the pure polyethylene material does not change obviously after being exposed in an ammonia gas environment, or the pure polyethylene material also presents colorless and transparent optical properties, the polyethylene nano composite material prepared by the example is light purple, and the color of the polyethylene nano composite material rapidly changes into reddish brown (within 5 min) after being exposed in the ammonia gas environment; as shown in Table 1, the polyvinyl alcohol nanocomposite prepared by the invention has excellent ultraviolet blocking performance, antibacterial performance, ammonia response performance, mechanical property, water vapor permeability, thermal stability and high hygroscopicity, can maintain high optical transparency, has simple preparation process, easily controlled chemical components, good repeatability and high yield, has potential application value in the fields of packaging materials, decoration materials and the like, is suitable for large-scale production, and expands the application field of the polyvinyl alcohol composite.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (3)
1. The polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions is characterized by comprising the following components in parts by weight: 100 parts of polyvinyl alcohol and 3-12 parts of cobalt complex crystal;
the chemical formula of the cobalt complex crystal is [ Co4(H8P3NC3O9)2]·H2O, in the formula (H)8P3NC3O9) The anion of 4 protons is lost for aminotrimethylene phosphate.
2. The polyvinyl alcohol composite material with the functions of ultraviolet blocking and antibacterial as claimed in claim 1, wherein the preparation method of the cobalt complex crystal comprises the following steps:
dissolving cobalt nitrate in a mixed solvent of deionized water and DMF, stirring for 10min, uniformly mixing, slowly adding aminotrimethylene phosphoric acid, stirring and mixing for 1h, then placing the mixture in a reaction kettle, reacting for 48h at 140 ℃, cooling to room temperature, filtering, washing and drying to obtain a cobalt complex crystal;
the mass ratio of the cobalt nitrate to the aminotrimethylene phosphoric acid to the deionized water to the DMF is 15: 11: 200: 950.
3. the preparation method of the polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions as claimed in any one of claims 1 to 2, characterized by comprising the following steps:
(1) dispersing 3-12 parts of cobalt complex crystals in 3000 parts of distilled water, performing ultrasonic treatment at room temperature for 1 hour, and stirring for 2 hours to obtain a cobalt complex uniform dispersion liquid for later use;
(2) adding 100 parts of polyvinyl alcohol into the cobalt complex uniform dispersion liquid obtained in the step (1), firstly stirring at room temperature for 1h, then heating to 85 ℃, stirring for 2h, and ultrasonically removing bubbles to obtain a uniform film forming liquid for later use;
(3) and (3) pouring the film forming liquid obtained in the step (2) into a flat-bottomed glass dish, and drying in a vacuum oven at 55 ℃ for 24 hours to obtain the polyvinyl alcohol composite material with the ultraviolet blocking and antibacterial functions.
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| CN113717483B CN113717483B (en) | 2023-04-07 |
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| CN114479107A (en) * | 2022-01-25 | 2022-05-13 | 桂林理工大学 | Complex with ammonia response, ultraviolet blocking and antibacterial functions and preparation and application thereof |
| CN115260599A (en) * | 2022-08-11 | 2022-11-01 | 桂林理工大学 | High-performance multifunctional cellulose acetate nano composite material and preparation method and application thereof |
| CN115260602A (en) * | 2022-08-11 | 2022-11-01 | 桂林理工大学 | Tough starch-based nanocomposite material with ultraviolet blocking and ammonia response functions and preparation method and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409972A (en) * | 2022-01-25 | 2022-04-29 | 桂林理工大学 | Sodium alginate composite material with ammonia response and antibacterial functions and preparation method thereof |
| CN114479107A (en) * | 2022-01-25 | 2022-05-13 | 桂林理工大学 | Complex with ammonia response, ultraviolet blocking and antibacterial functions and preparation and application thereof |
| CN114479107B (en) * | 2022-01-25 | 2024-02-06 | 桂林理工大学 | Complex with ammonia response, ultraviolet blocking and antibacterial functions and preparation and application thereof |
| CN115260599A (en) * | 2022-08-11 | 2022-11-01 | 桂林理工大学 | High-performance multifunctional cellulose acetate nano composite material and preparation method and application thereof |
| CN115260602A (en) * | 2022-08-11 | 2022-11-01 | 桂林理工大学 | Tough starch-based nanocomposite material with ultraviolet blocking and ammonia response functions and preparation method and application thereof |
| CN115260599B (en) * | 2022-08-11 | 2023-12-19 | 桂林理工大学 | High-performance multifunctional cellulose acetate nanocomposite and preparation method and application thereof |
| CN115260602B (en) * | 2022-08-11 | 2024-02-06 | 桂林理工大学 | Tough starch-based nanocomposite with ultraviolet blocking and ammonia response functions as well as preparation method and application thereof |
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