CN114015104B - Production technology of environment-friendly food packaging film with freezing acceleration function - Google Patents
Production technology of environment-friendly food packaging film with freezing acceleration function Download PDFInfo
- Publication number
- CN114015104B CN114015104B CN202111460538.7A CN202111460538A CN114015104B CN 114015104 B CN114015104 B CN 114015104B CN 202111460538 A CN202111460538 A CN 202111460538A CN 114015104 B CN114015104 B CN 114015104B
- Authority
- CN
- China
- Prior art keywords
- solution
- freezing
- film
- volume concentration
- drying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/14—Hemicellulose; Derivatives thereof
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention relates to a production technology of an environment-friendly food packaging film with an accelerated freezing function, and belongs to the field of food packaging materials. The method is characterized in that wheat bran is used as a main raw material, and an AX base membrane is obtained by extracting, modifying and casting Arabinoxylan (AX); the surface functionalization of the film is realized through the light-operated hydrophobic modification and the fixed ice nucleating agent, and the environment-friendly food packaging film with the freezing acceleration function is prepared. The packaging film produced by the invention has the functions of anti-icing, anti-fouling, freezing acceleration and degradability, and can be used as a packaging material for frozen foods.
Description
One, the technical field
The invention relates to a production technology of an environment-friendly food packaging film with an accelerated freezing function, and belongs to the field of food packaging materials.
Second, background Art
The plastic film material has good packaging performance and low manufacturing cost, is still the food packaging material with the widest application range and the largest dosage at present, but the degradation-resistant characteristic of the plastic causes great pressure on the ecological environment. The degradable biopolymer has good application prospect in packaging materials, wherein the polysaccharide is taken as a representative bio-based material and has excellent degradability. However, the film material prepared from the polysaccharide polymer has strong hydrophilicity and poor mechanical properties, and the hydrophilicity of the film is increased although the mechanical properties are improved to a certain extent after the plasticizer is added, so that the film material is difficult to use in a high-humidity environment. The freezing preservation is widely applied as a food preservation means, can inhibit the growth and the propagation of microorganisms and the activity of enzyme in food, and can reserve the nutrient components in the food to the utmost extent, thereby prolonging the shelf life of the food, however, the ice crystal formation effect caused by freezing can cause the quality degradation of the food, and the development of the frozen food industry is limited. The quick freezing can be divided into quick freezing and slow freezing according to different freezing modes of freezing time, the quick freezing can pass through a maximum ice crystal generation zone at a higher speed to form micro ice crystals, the damage to cells is reduced, the taste and the quality of food are kept to the maximum extent, but the consumption of electric energy by the quick freezing is very large, and in addition, China is in a state of power shortage at present, and the load on a power system is larger. The superhydrophobic surface has the functions of resisting pollution and self-cleaning, but the water drops on the superhydrophobic surface can be condensed into ice at a low speed, so that the freezing speed of the food is reduced. Therefore, it is necessary to develop an environmentally friendly frozen food packaging film having a function of accelerating freezing.
The Arabinoxylan (AX) in the wheat bran is a degradable polysaccharide substance, has the advantages of environmental protection, high yield, low cost, renewability and the like, and has good hydrophobicity and film-forming property after covalent modification. Low-energy alkyl groups can be fixed on the surface of the film by utilizing a light-operated reaction, so that a super-hydrophobic surface is formed, and the adhesion of food and ice crystals to a package is reduced. It has been shown that alpha-Al2O3Has certain heat-conducting property and high crystallinity alpha-Al2O3But also helps to align water molecules, thereby accelerating the generation of ice crystals.
The patent publication No. CN211280029U, published as 2020/8/18 discloses "a degradable plastic film" which is prepared from a high-strength starch composite film, a light-condensing film, a heat-stable film and an antibacterial layer, but the film material has a single function. The invention modifies AX, and then realizes the super-hydrophobic surface through light-operated modification, and in addition, the invention also has the effect of accelerating freezing. The patent publication No. CN212046286U, published as 2020, 4 and 23 discloses a polypropylene film with super-hydrophobic function, which uses a polypropylene layer, an antibacterial layer, an ultraviolet-resistant layer and a hydrophobic layer to obtain a hydrophobic and waterproof food packaging material. The method has the advantages that the membrane is prepared after the AX is modified, the super-hydrophobic surface can be realized by simply modifying the surface, the operation is simple, and the method is green and environment-friendly.
The method takes wheat bran as a main raw material, and obtains an AX base membrane after AX extraction, modification and membrane casting; by passingOptically-controlled hydrophobic modification and fixation of alpha-Al2O3Ice core to obtain the environment-friendly food packaging film with the function of accelerating freezing. The film has the effects of anti-icing and anti-fouling, freezing acceleration, degradability and the like, and can be used as a packaging material to be applied to frozen foods.
Third, the invention
Technical problem
The invention aims to provide a production technology of an environment-friendly frozen food packaging film with an accelerated freezing function, which realizes the functions of ice prevention, stain resistance and accelerated freezing through AX modification, base film preparation, light-operated hydrophobic modification and ice nucleating agent fixation.
Technical scheme
The technical scheme of the invention is summarized as follows: taking wheat bran as a main raw material, extracting, modifying and casting by using Arabinoxylan (AX) to obtain an AX base membrane; hydrophobic modification and alpha-Al by light control2O3Fixing the ice core to prepare the required food packaging film material, and the specific steps comprise:
(1) AX extraction: according to a known method, after enzyme deactivation, crushing, starch removal and protein removal, wheat bran is uniformly mixed with a mixed solution of 1.5M NaOH and 2.0M urea to prepare a mixed solution with the mass volume concentration of 5%, the mixed solution is stirred for 8-12 h at 25 ℃, and after the reaction is finished, the mixed solution is centrifuged at 5000rpm for 10min to obtain a supernatant; adding absolute ethyl alcohol into the solution until the volume concentration is 30%, centrifuging at 8000rpm for 20min to obtain supernatant, continuously adding absolute ethyl alcohol until the volume concentration is 40% -70%, and repeating the centrifuging process to obtain polysaccharide precipitates under different volume concentrations of the ethyl alcohol; resuspending the precipitate with pure water, dialyzing at 4 ℃ for 48-72 h, and freeze-drying the obtained solution to obtain AX with different alcohol precipitation concentrations; preferably, the alcohol precipitation concentration of the AX is 50%, the ratio of arabinose to xylose is 0.91, the relative molecular weight is 687kDa, and the film forming effect of the AX is optimal;
(2) modification of AX: dissolving AX in dimethyl sulfoxide to prepare a solution with the mass volume concentration of 4%; adjusting the pH value of the solution to 8.0-9.0 by using triethylamine, slowly adding n-Octene Succinic Anhydride (OSA), wherein the molar ratio of AX to OSA is 2-12, reacting for 4-5 h at room temperature, and the substitution rate is 0.05-0.25; preferably, the solution pH is 8.5, the molar ratio of AX to OSA is 4, and the substitution rate is 0.17, when the mechanical properties of the modified AX-based film are optimal; adding equal volume of ethanol to stop the reaction, centrifuging at 5000rpm for 5-8 min, taking the precipitate, washing with ethanol for 2-3 times, and drying in a vacuum drying oven for 10-12 h;
(3) preparation of modified AX base membrane: dissolving the OSA modified AX into pure water according to the mass volume concentration of 2-4%, fully and uniformly mixing, and degassing until bubbles are completely eliminated, wherein the mass volume concentration of the modified AX is preferably 4%, and the film forming and mechanical properties are optimal; pouring the degassed solution into a mold, and drying in an oven at 80 ℃ for 3-4 h to obtain a modified AX base film;
(4) light-operated hydrophobic modification: immersing an AX base film into toluene, adding trichlorovinylsilane with the volume concentration of 0.06% -0.12%, reacting for 12-24 h, taking out the AX base film, washing with ethanol for 2-3 times, and drying in nitrogen flow at room temperature for 3-4 h; the volume concentration of the trichlorosilane is preferably 0.10%, and in this case, alkenyl groups can be better fixed on the surface of the base film; preparing a butanethiol solution with the volume concentration of 20% by taking ethanol as a dispersing agent, immersing an AX base membrane into the solution, quickly irradiating for 4-7 min by using an ultraviolet lamp with the power of 300-500W, washing for 2-3 times by using ethanol after irradiation, and drying for 3-4 h in nitrogen flow at room temperature; preferably, the ultraviolet treatment condition is 400W for 5min, and the fixing effect of the light-controlled reaction is optimal at the moment;
(5) ice nucleating agent fixation: alpha-Al with the grain diameter of 10-30 nm2O3Mixing the particles with 50mL of hexane to prepare a dispersion liquid with the mass volume concentration of 0.2-0.6%; treating for 30-40 min at the ultrasonic frequency of 30Hz and the ultrasonic power of 100-200W, and adding the silicon rubber solution until the final mass volume concentration is 4%, preferably alpha-Al2O3The particle size of the particles is 20nm, the mass volume concentration is 0.6%, and the capability of accelerating the formation of ice crystals is strongest at the moment; stirring at 700-800 rpm for 3-4 h while performing ultrasonic treatment to enable alpha-Al2O3Uniformly dispersing in the solution; and rotationally spraying the prepared solution on the surface of the membrane, and drying in a 50 ℃ oven for 18-24 hours to obtain the target membrane material.
Advantageous effects
Compared with the prior art, the invention has the following advantages:
(1) by modifying AX with different structures, the AX base film can be endowed with good hydrophobicity and mechanical properties under the condition of not adding exogenous plasticizers;
(2) a super-hydrophobic surface can be obtained through light-operated hydrophobic modification, so that adsorption of ice crystals is hindered, and the ice crystal self-cleaning coating has the functions of resisting pollution and self-cleaning;
(3) by fixing alpha-Al2O3The particles lower the supercooling temperature and have the effect of accelerating the freezing.
Fourth, detailed description of the invention
Example 1
According to a known method, after enzyme deactivation, crushing, starch removal and protein removal, wheat bran is uniformly mixed with a mixed solution of 1.5M NaOH and 2.0M urea to prepare a mixed solution with the mass volume concentration of 5%, the mixed solution is stirred for 8-12 hours at 25 ℃, and after the reaction is finished, the mixed solution is centrifuged for 10min at 5000rpm to obtain a supernatant; adding absolute ethyl alcohol into the solution until the volume concentration is 40%, centrifuging at 8000rpm for 20min to obtain supernatant, continuously adding absolute ethyl alcohol until the volume concentration is 50%, and repeating the centrifuging process to obtain polysaccharide precipitate with the volume concentration of 50% ethanol; resuspending the precipitate with pure water, dialyzing at 4 ℃ for 48-72 h, and freeze-drying the obtained solution to obtain AX with 50% alcohol precipitation concentration; dissolving AX in dimethyl sulfoxide to prepare a solution with the mass volume concentration of 4%; adjusting the pH of the solution to 8.5 by using triethylamine, slowly adding n-Octene Succinic Anhydride (OSA), reacting for 4-5 h at room temperature, wherein the molar ratio of AX to OSA is 4, adding equal volume of ethanol to stop the reaction, centrifuging at 5000rpm for 5-8 min, taking precipitate, washing for 2-3 times by using ethanol, and drying for 10-12 h in a vacuum drying oven; dissolving the OSA modified AX in pure water according to the mass volume concentration of 4%, fully and uniformly mixing, degassing until bubbles are completely eliminated, pouring the degassed solution into a mold, and drying in an oven at the temperature of 80 ℃ for 3-4 h to obtain a modified AX base film; immersing an AX base film into toluene, adding trichlorovinylsilane with the volume concentration of 0.10%, reacting for 12-24 h, taking out the AX base film, washing with ethanol for 2-3 times, and drying in nitrogen flow at room temperature for 3-4 h; ethanol is used as a dispersant to prepare a butanethiol solution with the volume concentration of 20 percent, the AX basal membrane is immersed in the solution, and the power consumption is 400 percent rapidlyIrradiating the W ultraviolet lamp for 5min, washing the W ultraviolet lamp for 2-3 times after irradiation, and drying the W ultraviolet lamp for 3-4 h at room temperature in nitrogen flow; alpha-Al with the grain diameter of 20nm2O3Mixing the particles with 50mL of hexane to prepare a solution with the mass volume concentration of 0.6%, treating the solution for 30-40 min at the ultrasonic frequency of 30Hz and the ultrasonic power of 100-200W, adding the silicon rubber solution until the final mass volume concentration is 4%, and stirring the solution for 3-4 h at 700-800 rpm while performing ultrasonic treatment to enable alpha-Al to be dissolved in the solution2O3Uniformly dispersing in the solution; and rotationally spraying the prepared solution on the surface of the membrane, and drying in a 50 ℃ oven for 18-24 hours to obtain the target membrane material. Freezing 100 water drops with the same volume on the surface of the membrane at-30 ℃, wherein the freezing time can be shortened by 8 min; the water contact angle of the membrane surface can reach 160 degrees; the tensile stress of the film was 23.2MPa, the tensile strain at break was 18.2%, and the Young's modulus value was 209 MPa.
Example 2
The extraction process of the wheat bran AX is the same as that of the example 1, and the alcohol precipitation concentration is 30 percent; the pH of the triethylamine solution is adjusted to 8.0, the mol ratio of AX to OSA is 2, and the processes of centrifugation, precipitation, washing and coal drying are the same as those of the example 1; preparing the modified AX into a solution with the mass volume concentration of 2%, and degassing, casting a film and drying the solution in the same way as in example 1; soaking AX in the same manner as in example 1, adding a trichlorovinylsilane solution with the volume concentration of 0.06%, and reacting, washing and drying in the same manner as in example 1; the light-operated reaction process of the AX base membrane and the butyl mercaptan is the same as that of the embodiment 1, the ultraviolet treatment condition is that the power of 300W is irradiated for 4min, and the washing and drying processes are the same as that of the embodiment 1; alpha-Al with the grain diameter of 10nm2O3Mixing the particles with 50mL of hexane to prepare a solution with the mass volume concentration of 0.2%, wherein the mixing, ultrasonic treatment, spraying and drying processes of the silicone rubber are the same as those of the example 1; 100 water drops with the same volume are frozen on the surface of the film at the temperature of minus 30 ℃, and the freezing time can be shortened by 3 min; the water contact angle of the membrane surface can reach 150 degrees; the tensile stress of the film was 7.3MPa, the tensile strain at break was 23%, and the Young's modulus value was 87 MPa.
Example 3
The extraction process of the wheat bran AX is the same as that of the example 1, and the alcohol precipitation concentration is 70 percent; adjusting pH of triethylamine solution to 9.0, molar ratio of AX to OSA to 12, and centrifugingThe procedures of precipitation, washing and drying are the same as those of example 1; preparing the modified AX into a solution with the mass volume concentration of 4%, and degassing, casting a film and drying the solution in the same way as in example 1; soaking AX in the same manner as in example 1, adding a trichlorovinylsilane solution with a volume concentration of 0.12%, and reacting, washing and drying in the same manner as in example 1; the light-operated reaction process of the AX basal membrane and the butanethiol is the same as that of the example 1, the ultraviolet treatment condition is that the irradiation is carried out for 7min at the power of 500W, and the washing and drying processes are the same as that of the example 1; alpha-Al with the grain diameter of 30nm2O3Mixing the particles with 50mL of hexane to prepare a solution with the mass volume concentration of 0.4%, wherein the mixing, ultrasonic treatment, spraying and drying processes of the silicon rubber are the same as those of the embodiment 1; freezing 100 water drops with the same volume on the surface of the membrane at-30 ℃, wherein the freezing time can be shortened by 5 min; the water contact angle of the membrane surface can reach 155 degrees; the tensile stress of the film was 44.0MPa, the tensile strain at break was 7.9%, and the Young's modulus value was 638 MPa.
The embodiments of the present invention have been described in detail above, but this is only an example for easy understanding and should not be construed as limiting the scope of the present invention. Also, various equivalent changes and substitutions which are possible for those skilled in the art can be made according to the technical solution of the present invention and the description of the preferred embodiment thereof, and all such changes and substitutions shall fall within the protection scope of the claims of the present invention.
Claims (2)
1. A production technology of an environment-friendly food packaging film with an accelerated freezing function is characterized in that wheat bran is used as a main raw material, and an Arabinoxylan (AX) base film is obtained after extraction, modification and film casting of the AX base film; the environment-friendly food packaging film with the freezing acceleration function is prepared by optically controlling hydrophobic modification and fixing an ice nucleating agent, and specifically comprises the following steps:
(1) AX extraction: according to a known method, after enzyme deactivation, crushing, starch removal and protein removal, wheat bran is uniformly mixed with a mixed solution of 1.5M NaOH and 2.0M urea to prepare a mixed solution with the mass volume concentration of 5%, the mixed solution is stirred for 8-12 h at 25 ℃, and after the reaction is finished, the mixed solution is centrifuged at 5000rpm for 10min, and supernatant is taken; adding absolute ethyl alcohol into the solution until the volume concentration is 30%, centrifuging at 8000rpm for 20min, taking the supernatant, continuously adding absolute ethyl alcohol until the volume concentration is 40% -70%, repeating the centrifuging process to obtain polysaccharide precipitates under different ethanol volume concentrations; resuspending the precipitate with pure water, dialyzing at 4 ℃ for 48-72 h, and freeze-drying the obtained solution to obtain AX with different alcohol precipitation concentrations; the obtained AX has a molecular weight range of 250-700 kDa, and the ratio of arabinose to xylose is 0.37-1.30;
(2) modification of AX: dissolving AX in dimethyl sulfoxide to prepare a solution with the mass volume concentration of 4%; adjusting the pH value of the solution to 8.0-9.0 by using triethylamine, slowly adding n-Octene Succinic Anhydride (OSA), wherein the mol ratio of AX to OSA is 2-12, and reacting for 4-5 h at room temperature; adding equal volume of ethanol to stop the reaction, centrifuging at 5000rpm for 5-8 min, taking the precipitate, washing with ethanol for 2-3 times, and drying in a vacuum drying oven for 10-12 h; the OSA substitution rate of the modified AX is 0.05-0.25;
(3) preparation of an AX base film: dissolving the AX modified by the OSA into pure water according to the mass volume concentration of 2-4%, fully and uniformly mixing, and degassing until bubbles are completely eliminated; pouring the degassed solution into a mold, and drying in an oven at 80 ℃ for 3-4 h to obtain an AX base film;
(4) light-operated hydrophobic modification: immersing an AX base film into toluene, adding trichlorovinylsilane with the volume concentration of 0.06% -0.12%, reacting for 12-24 h, taking out the AX base film, washing with ethanol for 2-3 times, and drying in nitrogen flow at room temperature for 3-4 h; preparing a butanethiol solution with the volume concentration of 20% by taking ethanol as a dispersing agent, immersing an AX base membrane into the solution, quickly irradiating for 4-7 min by using an ultraviolet lamp with the power of 300-500W, washing for 2-3 times by using the ethanol, and drying for 3-4 h at room temperature in a nitrogen flow;
(5) fixing the ice nucleating agent by using alpha-Al with the particle size of 10-30 nm2O3Mixing the particles with 50mL of hexane to prepare a dispersion liquid with the mass volume concentration of 0.2-0.6%; treating for 30-40 min at an ultrasonic frequency of 30Hz and an ultrasonic power of 100-200W, adding a silicon rubber solution until the final mass volume concentration is 4%, and stirring for 3-4 h at 700-800 rpm while performing ultrasonic treatment to enable alpha-Al2O3Uniformly dispersing in the solution; spraying the prepared solution on the surface of a film in a rotating way, and drying at 50 DEG CAnd drying in a box for 18-24 hours to obtain the environment-friendly food packaging film material with the freezing acceleration function.
2. The production technology of the environment-friendly food packaging film with the freezing acceleration function as claimed in claim 1, wherein the obtained film material has the effects of anti-icing, anti-fouling, freezing acceleration and degradability, and is applied to frozen food as a packaging material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111460538.7A CN114015104B (en) | 2021-12-02 | 2021-12-02 | Production technology of environment-friendly food packaging film with freezing acceleration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111460538.7A CN114015104B (en) | 2021-12-02 | 2021-12-02 | Production technology of environment-friendly food packaging film with freezing acceleration function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114015104A CN114015104A (en) | 2022-02-08 |
| CN114015104B true CN114015104B (en) | 2022-06-07 |
Family
ID=80067489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111460538.7A Active CN114015104B (en) | 2021-12-02 | 2021-12-02 | Production technology of environment-friendly food packaging film with freezing acceleration function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114015104B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117343363B (en) * | 2022-09-29 | 2024-05-03 | 南京农业大学 | Environment-friendly food packaging film production method based on polyphenol modification |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264262A (en) * | 2014-09-01 | 2015-01-07 | 郸城财鑫糖业有限责任公司 | Method for extracting araboxylan and protein fiber from wheat bran |
| WO2017132777A1 (en) * | 2016-02-01 | 2017-08-10 | Universidad De Chile | Edible bio-active films based on chitosan or a mixture of quinoa protein-chitosan; sheets having chitosan-tripolyphoshate-thymol nanoparticles; production method; bio-packaging comprising same; and use thereof in fresh fruit with a low ph |
| CN107744011A (en) * | 2017-09-27 | 2018-03-02 | 舟山达康科技有限公司 | A kind of freeze proof antistaling agent of frozen fish |
| CN109749108A (en) * | 2019-02-28 | 2019-05-14 | 华南理工大学 | A kind of edible tapioca composite package film and its preparation method and application |
| CN111004537A (en) * | 2019-11-21 | 2020-04-14 | 南宁师范大学 | Antifouling paint and preparation method and application thereof |
| CN211280029U (en) * | 2019-11-12 | 2020-08-18 | 赣州市轩逸包装制品有限公司 | Degradable plastic film |
-
2021
- 2021-12-02 CN CN202111460538.7A patent/CN114015104B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264262A (en) * | 2014-09-01 | 2015-01-07 | 郸城财鑫糖业有限责任公司 | Method for extracting araboxylan and protein fiber from wheat bran |
| WO2017132777A1 (en) * | 2016-02-01 | 2017-08-10 | Universidad De Chile | Edible bio-active films based on chitosan or a mixture of quinoa protein-chitosan; sheets having chitosan-tripolyphoshate-thymol nanoparticles; production method; bio-packaging comprising same; and use thereof in fresh fruit with a low ph |
| CA3048067A1 (en) * | 2016-02-01 | 2017-08-10 | Universidad De Chile | Edible bio-active films based on chitosan or a mixture of quinoa protein-chitosan; sheets having chitosan-tripolyphoshate-thymol nanoparticles; production method; bio-packaging comprising same; and use thereof in fresh fruit with a low ph |
| CN107744011A (en) * | 2017-09-27 | 2018-03-02 | 舟山达康科技有限公司 | A kind of freeze proof antistaling agent of frozen fish |
| CN109749108A (en) * | 2019-02-28 | 2019-05-14 | 华南理工大学 | A kind of edible tapioca composite package film and its preparation method and application |
| CN211280029U (en) * | 2019-11-12 | 2020-08-18 | 赣州市轩逸包装制品有限公司 | Degradable plastic film |
| CN111004537A (en) * | 2019-11-21 | 2020-04-14 | 南宁师范大学 | Antifouling paint and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 彭锋等.木聚糖衍生物及膜材料研究进展.《林业工程学报》.2021,第6卷(第1期),第1-12页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114015104A (en) | 2022-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5977015B2 (en) | Stable reactive thermosetting formulations of reducing sugars and amines | |
| CN114015104B (en) | Production technology of environment-friendly food packaging film with freezing acceleration function | |
| CA3078323A1 (en) | Optically transparent polyimides | |
| CN110028702B (en) | Nano-silica-doped nano-cellulose material and preparation method and application thereof | |
| Iqbal et al. | “One-pot” synthesis and characterisation of novel P (3HB)–ethyl cellulose based graft composites through lipase catalysed esterification | |
| CN101108741A (en) | Industrial process for preparing nm-class active calcium carbonate | |
| JP5732390B2 (en) | Method for the co-production of chitin, its derivatives and polymers containing glucose, mannose and / or galactose by fermentation of yeast Pichia pastoris | |
| Wang et al. | Eucommia ulmoides gum-based engineering materials: fascinating platforms for advanced applications | |
| Mohite et al. | Recycling of major agriculture crop residues and its application in polymer industry: A Review in the context of waste to energy nexus | |
| Li et al. | Novel green resource material: Eucommia ulmoides gum | |
| Chen et al. | Natural polysaccharide: Modification and application | |
| Qiu et al. | Polyvinyl alcohol based biodegradable polymer nanocomposites | |
| CN111808307B (en) | Preparation method of spirulina antibacterial peptide composite membrane | |
| CN106589602B (en) | A kind of polypropylene/cellulose intercalation nano crystal master batch, preparation method and applications | |
| Bairwan et al. | Recent Advances in Poly (3-Hydroxybutyrate-co-3-Hydroxyvalerate) Biocomposites in Sustainable Packaging Applications | |
| Jamsheera et al. | Production of Bacterial Cellulose from Acetobacter Species and Its Applications-A Review. | |
| CN106750993B (en) | A kind of polypropylene/cellulose intercalation nano crystalline composition and preparation method thereof | |
| Liu et al. | Fabrication and characterisation of poly (vinyl alcohol)/deacetylated crab-shell particles biocomposites with excellent thermomechanical and antibacterial properties as active food packaging material | |
| CN114058055B (en) | Production method of degradable frozen food packaging film with photo-thermal antibacterial function | |
| CN111303305A (en) | Method for preparing high-substitution-degree acetylated starch by electric field coupling ultrasound | |
| CN101114679A (en) | Rotary coating method for preparing copper-indium-selenium nanometer thin-film material | |
| CN102453101A (en) | Method for preparing starch derivative | |
| CN114031912A (en) | Enzyme-synthesized nano-cellulose/PHBV composite material and preparation method thereof | |
| CN114316373A (en) | Preparation method of humidity-responsive nano-cellulose composite film and obtained product | |
| US20130158222A1 (en) | Polyvinyl alcohol polymer, and method for producing hydrolyzable cellulose using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |