CN115029865A - Chitosan and polyvinyl alcohol composite film, preparation method and application - Google Patents
Chitosan and polyvinyl alcohol composite film, preparation method and application Download PDFInfo
- Publication number
- CN115029865A CN115029865A CN202210414314.0A CN202210414314A CN115029865A CN 115029865 A CN115029865 A CN 115029865A CN 202210414314 A CN202210414314 A CN 202210414314A CN 115029865 A CN115029865 A CN 115029865A
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- Prior art keywords
- polyvinyl alcohol
- chitosan
- solution
- composite film
- electrostatic spinning
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- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 49
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 49
- 229920001661 Chitosan Polymers 0.000 title claims abstract description 45
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000010041 electrostatic spinning Methods 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 7
- 238000009987 spinning Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 4
- 235000012055 fruits and vegetables Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 244000061456 Solanum tuberosum Species 0.000 abstract description 4
- 235000002595 Solanum tuberosum Nutrition 0.000 abstract description 4
- 235000012015 potatoes Nutrition 0.000 abstract description 4
- 230000002335 preservative effect Effects 0.000 abstract description 4
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 3
- 239000003755 preservative agent Substances 0.000 abstract description 3
- 230000003078 antioxidant effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 24
- 239000012528 membrane Substances 0.000 description 9
- 239000000835 fiber Substances 0.000 description 6
- 239000002121 nanofiber Substances 0.000 description 6
- HHEAADYXPMHMCT-UHFFFAOYSA-N dpph Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1[N]N(C=1C=CC=CC=1)C1=CC=CC=C1 HHEAADYXPMHMCT-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- -1 DPPH free radical Chemical class 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001523 electrospinning Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/154—Organic compounds; Microorganisms; Enzymes
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Microbiology (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Artificial Filaments (AREA)
Abstract
The invention relates to a chitosan and polyvinyl alcohol composite film, a preparation method and application, belonging to the field of preservative films, wherein the preparation method of the chitosan and polyvinyl alcohol composite film comprises the following steps: step S1: respectively dissolving chitosan powder and polyvinyl alcohol powder in 30% acetic acid solution by volume concentration, and uniformly stirring to respectively obtain 8% polyvinyl alcohol solution and chitosan solution by volume fraction; step S2: mixing the chitosan solution obtained in the step S1 with a polyvinyl alcohol solution according to a volume ratio of 0-1:5, uniformly stirring after mixing, and standing and defoaming to obtain an electrostatic spinning solution; step S3: and spinning the prepared electrostatic spinning solution by using electrostatic spinning equipment to obtain a chitosan and polyvinyl alcohol composite film, wherein the prepared chitosan and polyvinyl alcohol composite film has antibacterial and antioxidant properties and can inhibit buds of potatoes and keep the potatoes fresh.
Description
Technical Field
The invention relates to the field of preservative films, in particular to a chitosan and polyvinyl alcohol composite film, a preparation method and application.
Background
The number of hydroxyl groups of polyvinyl alcohol is too large, so that the water solubility is high, the defects of easy water absorption, easy influence of environmental humidity and the like exist after the polyvinyl alcohol is used for preparing a film, the mechanical property, the barrier property and the like are poor, the application range of the polyvinyl alcohol is limited to a certain extent, and the existing preservative film is only used as a physical barrier to isolate the contact of air in the environment and fruits and vegetables, but the preservative effect is poor.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a chitosan and polyvinyl alcohol composite film prepared from chitosan and polyvinyl alcohol and a preparation method thereof.
The technical scheme of the invention is as follows: a preparation method of a chitosan and polyvinyl alcohol composite film is characterized by comprising the following steps:
step S1: respectively dissolving chitosan powder and polyvinyl alcohol powder in 30% acetic acid solution by volume concentration, and uniformly stirring to respectively obtain 8% polyvinyl alcohol solution and chitosan solution by volume fraction;
step S2: mixing the chitosan solution obtained in the step S1 with a polyvinyl alcohol solution according to a volume ratio of 0-1:5, uniformly stirring after mixing, and standing and defoaming to obtain an electrostatic spinning solution;
step S3: and spinning the prepared electrostatic spinning solution by using electrostatic spinning equipment to obtain the chitosan and polyvinyl alcohol composite film.
Further, the stirring condition in the step S1 is to use a magnetic stirrer to stir for 4-8h until a stable and uniform solution is formed.
Further, the stirring time in the step S2 is 4 to 6 hours.
Further, the working voltage of the electrostatic spinning device in the step S3 is 8kV to 16kV, and the receiving distance is 10 cm to 20 cm.
Compared with the prior art, the invention has the beneficial effects that: the polyvinyl alcohol/chitosan nanofiber is prepared by the electrostatic spinning technology, in addition, the fresh-keeping effect of the chitosan and polyvinyl alcohol composite film can be remarkably improved by the advantages of high specific surface area and high porosity of the electrostatic spinning nanofiber, and in addition, the chitosan has certain antibacterial activity, so that the antibacterial fresh-keeping effect of the chitosan and polyvinyl alcohol composite film can be further improved.
Drawings
FIG. 1 is a graph showing the oxidation resistance of the electrospun fiber membranes prepared in the examples and having different concentrations of polyvinyl alcohol/chitosan;
FIG. 2 is a schematic diagram of the nano X-ray diffraction analysis of the polyvinyl alcohol/chitosan electrospun fiber membrane prepared in the example with different concentrations.
Detailed Description
The present invention is further described in detail below with reference to examples to enable those skilled in the art to practice the invention with reference to the description.
The embodiment of the invention provides a preparation method of a chitosan and polyvinyl alcohol composite film, which comprises the following steps:
step S1: respectively dissolving polyvinyl alcohol and chitosan into an acetic acid solution with the volume concentration of 30%, continuously stirring for 4-8 hours in a constant-temperature magnetic stirrer to respectively prepare a polyvinyl alcohol solution and a chitosan solution, wherein the solid content in the polyvinyl alcohol solution and the chitosan solution is 8%, and standing and defoaming the polyvinyl alcohol solution and the chitosan solution for later use.
Step S2: and (4) mixing the chitosan solution and the polyvinyl alcohol solution obtained in the step (S1) according to the ratio of 0%, 5%, 10%, 15% and 20%, continuously stirring in a constant-temperature magnetic stirrer for 4-8 hours to obtain five electrostatic spinning solutions with different proportions, standing and defoaming the electrostatic spinning solutions, respectively spinning by using electrostatic spinning equipment, and finally preparing the polyvinyl alcohol and chitosan composite film. The electrostatic spinning equipment consists of a high-voltage power supply, an injection pump capable of controlling the propelling speed and a rotary drum receiver. Firstly, 4mL of macromolecular solution is sucked into a 5mL plastic injector, the advancing speed is set to be 0.06mm/min, the voltage is 15kV, the receiving distance is 15cm, electrostatic spinning is received by a roller receiver, and the rotating speed of a roller is set to be 200 r/min.
In the embodiment, the influence of different proportions of chitosan and polyvinyl alcohol (based on polyvinyl alcohol, the concentrations of chitosan are respectively 0%, 5%, 10%, 15% and 20%) on the electrostatic spinning performance is examined, the electrostatic spinning fiber membrane is subjected to X-ray diffraction analysis, nanofiber membranes prepared from five different concentrations of electrostatic spinning solutions are respectively cut into the size of 20mm multiplied by 20mm and are flatly paved on a glass sheet, and the diffraction angle 2 theta range is 5-50 degrees shown in figure 2 through analysis of an X-ray diffractometer, so that after electrostatic spinning, the diffraction peaks of the polyvinyl alcohol and the chitosan are all changed on the PVA/CS nanofiber membrane, and the preparation of the solution and the electrospinning process have influence on the crystal structures of PVA and CS. Indicating that the polyvinyl alcohol was successfully mixed with the chitosan.
The five polyvinyl alcohol/chitosan electrostatic spinning fiber membranes prepared in the embodiment are subjected to XRD test and oxidation resistance test.
The test comprises the following steps:
five kinds of polyvinyl alcohol/chitosan electrostatic spinning fiber membranes with different concentrations are subjected to DPPH free radical removal experiments to explore the antioxidant effect of the polyvinyl alcohol/chitosan nano fiber membranes, 0.00394g of DPPH powder is weighed and placed in a volumetric flask, dissolved by absolute ethyl alcohol and titrated to 100mL, the nano fiber membranes are placed in reaction test tubes, and 3mL of the prepared DPPH solution is added into each test tube. Incubating at room temperature for 30min, taking out DPPH solution, and measuring its absorbance at wavelength of 517 nm.
As shown in figure 1, the antioxidation performance of the electrostatic spinning is enhanced along with the increase of the concentration of the chitosan, and the result shows that the polyvinyl alcohol/chitosan rice fiber has good antioxidation performance, can protect potatoes from oxidative degradation, and prolongs the storage time of the potatoes.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the details shown, or described, but rather to apply to all possible applications of the invention, and it is to be understood that the invention is not limited to the details shown and described, since various modifications may be made without departing in any way from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. A preparation method of a chitosan and polyvinyl alcohol composite film is characterized by comprising the following steps:
step S1: respectively dissolving chitosan powder and polyvinyl alcohol powder in 30% acetic acid solution by volume concentration, and uniformly stirring to respectively obtain 8% polyvinyl alcohol solution and chitosan solution by volume fraction;
step S2: mixing the chitosan solution obtained in the step S1 with a polyvinyl alcohol solution according to a volume ratio of 0-1:5, uniformly stirring after mixing, and standing and defoaming to obtain an electrostatic spinning solution;
step S3: and spinning the prepared electrostatic spinning solution by using electrostatic spinning equipment to obtain the chitosan and polyvinyl alcohol composite film.
2. The method of claim 1, wherein the stirring condition in step S1 is a magnetic stirrer stirring for 4-8h until a stable and uniform solution is formed.
3. The method of claim 1, wherein the stirring time in step S2 is 4-6 hours.
4. The method of claim 1, wherein the electrostatic spinning device of step S3 has an operating voltage of 8 kV-16 kV and a receiving distance of 10-20 cm.
5. A chitosan-polyvinyl alcohol composite film, characterized by being produced by the production method according to any one of claims 1 to 4.
6. The application of the chitosan and polyvinyl alcohol composite film as claimed in claim 5 in fruit and vegetable fresh-keeping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210414314.0A CN115029865A (en) | 2022-04-20 | 2022-04-20 | Chitosan and polyvinyl alcohol composite film, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210414314.0A CN115029865A (en) | 2022-04-20 | 2022-04-20 | Chitosan and polyvinyl alcohol composite film, preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115029865A true CN115029865A (en) | 2022-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210414314.0A Pending CN115029865A (en) | 2022-04-20 | 2022-04-20 | Chitosan and polyvinyl alcohol composite film, preparation method and application |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11139462A (en) * | 1997-11-06 | 1999-05-25 | Kao Corp | Wrapping film and film storage body |
| CN103705969A (en) * | 2014-01-02 | 2014-04-09 | 东华大学 | Method for preparing chitosan-based silver-loaded composite antimicrobial superfine fiber membrane |
| CN106400310A (en) * | 2016-08-30 | 2017-02-15 | 华南农业大学 | Nano-fiber anti-microbial fruit-vegetable preservative film with porous structure, and preparation method and application |
| CN106693030A (en) * | 2015-08-31 | 2017-05-24 | 青岛新智源健康科技有限公司 | Chitosan nanofibers as well as large-scale electrospinning preparation method and application thereof |
| US20190327966A1 (en) * | 2016-11-18 | 2019-10-31 | The American University In Cairo | Polyvinyl alcohol/chitosan composite soluble electrospun nanofibers for disinfectant anti-bacterial and anti-corrosion applications |
| CN111058193A (en) * | 2019-12-30 | 2020-04-24 | 大有作为(天津)冷链设备有限公司 | Strip-shaped electrospun membrane |
| CN111304779A (en) * | 2020-02-27 | 2020-06-19 | 北京林业大学 | Preparation method of chitosan/polyvinyl alcohol nanofiber containing nanocellulose |
| CN114225088A (en) * | 2021-12-23 | 2022-03-25 | 西安工程大学 | Composite multilayer dressing and preparation method and application thereof |
-
2022
- 2022-04-20 CN CN202210414314.0A patent/CN115029865A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11139462A (en) * | 1997-11-06 | 1999-05-25 | Kao Corp | Wrapping film and film storage body |
| CN103705969A (en) * | 2014-01-02 | 2014-04-09 | 东华大学 | Method for preparing chitosan-based silver-loaded composite antimicrobial superfine fiber membrane |
| CN106693030A (en) * | 2015-08-31 | 2017-05-24 | 青岛新智源健康科技有限公司 | Chitosan nanofibers as well as large-scale electrospinning preparation method and application thereof |
| CN106400310A (en) * | 2016-08-30 | 2017-02-15 | 华南农业大学 | Nano-fiber anti-microbial fruit-vegetable preservative film with porous structure, and preparation method and application |
| US20190327966A1 (en) * | 2016-11-18 | 2019-10-31 | The American University In Cairo | Polyvinyl alcohol/chitosan composite soluble electrospun nanofibers for disinfectant anti-bacterial and anti-corrosion applications |
| CN111058193A (en) * | 2019-12-30 | 2020-04-24 | 大有作为(天津)冷链设备有限公司 | Strip-shaped electrospun membrane |
| CN111304779A (en) * | 2020-02-27 | 2020-06-19 | 北京林业大学 | Preparation method of chitosan/polyvinyl alcohol nanofiber containing nanocellulose |
| CN114225088A (en) * | 2021-12-23 | 2022-03-25 | 西安工程大学 | Composite multilayer dressing and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 徐聪等: "静电纺丝技术在食品领域应用的研究进展" * |
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Application publication date: 20220909 |