CN105602012B - A kind of degradable film for package, preparation method and application - Google Patents
A kind of degradable film for package, preparation method and application Download PDFInfo
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- CN105602012B CN105602012B CN201610077126.8A CN201610077126A CN105602012B CN 105602012 B CN105602012 B CN 105602012B CN 201610077126 A CN201610077126 A CN 201610077126A CN 105602012 B CN105602012 B CN 105602012B
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- Prior art keywords
- film
- package
- degradable
- bath
- cornstarch
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- 238000002360 preparation method Methods 0.000 title claims description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229920002261 Corn starch Polymers 0.000 claims abstract description 24
- 239000008120 corn starch Substances 0.000 claims abstract description 24
- 229940099112 cornstarch Drugs 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 240000008042 Zea mays Species 0.000 claims abstract description 19
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 19
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 19
- 235000005822 corn Nutrition 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000010907 stover Substances 0.000 claims abstract description 17
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 16
- 239000008103 glucose Substances 0.000 claims abstract description 16
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 15
- 239000008367 deionised water Substances 0.000 claims abstract description 15
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims description 22
- 238000007766 curtain coating Methods 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 229940068984 polyvinyl alcohol Drugs 0.000 claims 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims 1
- 235000013305 food Nutrition 0.000 abstract description 13
- 230000004888 barrier function Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009461 vacuum packaging Methods 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000000796 flavoring agent Substances 0.000 abstract description 3
- 235000019634 flavors Nutrition 0.000 abstract description 3
- 239000002985 plastic film Substances 0.000 abstract description 3
- 229920006255 plastic film Polymers 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 61
- 239000000306 component Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000005022 packaging material Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000012512 characterization method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004113 cell culture Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002085 enols Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000012041 food component Nutrition 0.000 description 1
- 239000005428 food component Substances 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229940100486 rice starch Drugs 0.000 description 1
- 235000013580 sausages Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions 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; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
-
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
-
- 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)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Wrappers (AREA)
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of degradable film for package, its raw material is grouped as by the group of following mass concentration percentage: the corn stover of 1.5-2.0%, the cornstarch of 3.2-4.2%, the polyvinyl alcohol of 3.4-3.9%, the glucose of 0.3-0.7%, the glycerol of 4-5%, the deionized water of 84.2-87.6%.Degradable film for package of the invention, vacuum packaging for food, pack excellent effect, existing composite plastic film flavor pack is overcome to be difficult to recycle, the shortcomings that environmental pollution, meanwhile degradable film for package of the invention, compared with existing cornstarch film, mechanical performance and barrier property are enhanced.
Description
Technical field
The invention belongs to technical field of cell culture, and in particular to a kind of degradable film for package, the invention further relates to one
The preparation method and application of kind degradable film for package.
Background technique
Degradable films generally refer to one layer covering on food or being placed between food component by edible material
The film of composition is a kind of novel free of contamination food inner packaging material that can replace plastics.Recently as people's ring
The enhancing of consciousness is protected, it is more and more that many plastic package materials cause people to the pollution of environment and food-safety problem
Concern has a higher requirement to packaging material for food, thus domestic and foreign scholars edible film has been carried out it is a large amount of careful
Research, edible film made of degradation plastic and natural macromolecular material has become the one of food processing and packaging field
Big hot spot, wherein degradable corn starch film film-formation result is preferable, can be directly as packaging material for food.
However, there are mechanical performances, barrier property when existing degradable corn starch film is directly used in food packaging
Difference, it is difficult to the problem of being used as the vacuum packaging material of food.
Summary of the invention
A kind of degradable film for package provided by the invention, preparation method and application, can solve existing degradable jade
When rice starch film is directly used in food packaging, there are mechanical performance, barrier property are poor, it is difficult to be used as the vacuum packaging material of food
The problem of.
The first purpose of the invention is to provide a kind of degradable film for package, raw material is by following mass concentration percentage
Group be grouped as: the corn stover of 1.5-2.0%, the cornstarch of 3.2-4.2%, the polyvinyl alcohol of 3.4-3.9%, 0.3-
0.7% glucose, the glycerol of 4-5%, the deionized water of 84.2-87.6%.
Preferably, degradable film for package of the invention, by 1.75% corn stover, 3.75% corn forms sediment raw material
Powder, 3.75% polyvinyl alcohol, 0.5% glucose, 4.41% glycerol, 85.84% deionized water composition.
Preferably, degradable film for package of the invention, by 1.5% corn stover, 4.1% corn forms sediment raw material
Powder, 3.9% polyvinyl alcohol, 0.6% glucose, 5% glycerol, 84.9% deionized water composition.
Preferably, degradable film for package of the invention, raw material by 2% corn stover, 3.4% cornstarch,
3.4% polyvinyl alcohol, 0.4% glucose, 4.1% glycerol, 86.7% deionized water composition.
A second object of the present invention is to provide a kind of preparation methods of degradable film for package, specifically according to the following steps
Implement:
Weigh the corn stover that mass concentration percentage is 1.5-2.0%, the cornstarch of 3.2-4.2%, 3.4-3.9%
Polyvinyl alcohol, the glucose of 0.3-0.7%, the glycerol of 4-5%, the deionized water of 84.2-87.6%, above-mentioned each raw material component
The sum of mass percent be 100%；
Weighed each raw material component is mixed well, then in 88-92 DEG C
Stirring in water bath 35-45min, the solution after obtaining water-bath；
By in the solution curtain coating after the water-bath to PC resin plate, 15-20min is stood, later in 80-85 DEG C
Dry 3-3.5h, obtains dry packing film；
The packing film of the drying is cooled to room temperature, finally takes packing film off, obtains degradable film for package.
Third object of the present invention is to provide a kind of degradable film for package, the application in food vacuum packaging.
The present invention prepares the superior degradable film for package of comprehensive performance using safe and reliable raw material, is used for food
Vacuum packaging, pack excellent effect, overcome existing composite plastic film flavor pack and be difficult to recycle, environmental pollution lack
Point, meanwhile, compared with existing cornstarch film, mechanical performance and barrier property have degradable film for package of the invention
Enhanced.
Specific embodiment
The present invention is described in detail combined with specific embodiments below, but should not be construed as limitation of the invention.
A kind of degradable film for package of the present invention, improves common corn starch film, with common corn starch
On the basis of being plasticizer at film base material, glycerol, the raw materials such as corn stover, polyvinyl alcohol, glucose are introduced, it is therefore intended that increase
The mechanical performance and barrier property of strong film material.
A kind of degradable film for package of the present invention, raw material are grouped as by the group of following mass concentration percentage: 1.5-
2.0% corn stover, the cornstarch of 3.2-4.2%, the polyvinyl alcohol of 3.4-3.9%, the glucose of 0.3-0.7%, 4-
5% glycerol, the deionized water of 84.2-87.6%.
Based on same inventive concept, the present invention also provides a kind of preparation methods of degradable film for package, specifically press
Implement according to following steps:
Step 1, the corn stover of mass concentration percentage 1.5-2.0%, the cornstarch of 3.2-4.2%, 3.4- are weighed
3.9% polyvinyl alcohol, the glucose of 0.3-0.7%, the glycerol of 4-5%, the above-mentioned each component of the deionized water of 84.2-87.6%
The sum of mass percent of raw material is 100%；
Step 2, each component weighed in step 1 is mixed well, then in 88-92 DEG C of stirring in water bath 35-45min, is obtained
Solution after obtaining water-bath；
Step 3, it by the solution curtain coating after water-bath in step 2 to PC resin plate, stands, later in 80-85 DEG C of dry 3-
3.5h obtains dry packing film；
Step 4, packing film dry in step 3 is cooled to room temperature, finally takes packing film off, obtained degradable
Packing film.
Preferably, a kind of degradable film for package of the present invention, including following embodiment:
Embodiment 1
The degradable film for package of embodiment 1, raw material by 1.75% corn stover, 3.75% cornstarch,
3.75% polyvinyl alcohol, 0.5% glucose, 4.41% glycerol, 85.84% deionized water composition, specifically according to one
Lower step is implemented:
Step 1, the corn stover that mass concentration percentage is 1.75% is weighed, 3.75% cornstarch, 3.75%
Polyvinyl alcohol, 0.5% glucose, 4.41% glycerol, 85.84% deionized water；
Step 2, each component weighed in step 1 is mixed well, then in 88-92 DEG C of stirring in water bath 35-45min, is obtained
Solution after obtaining water-bath；
Step 3, it by the solution curtain coating after water-bath in step 2 to PC resin plate, stands, later in 80-85 DEG C of dry 3-
3.5h obtains dry packing film；
Step 4, packing film dry in step 3 is cooled to room temperature, finally takes packing film off, obtained degradable
Packing film.
Embodiment 2
The degradable film for package of embodiment 2, raw material by 1.5% corn stover, 4.1% cornstarch, 3.9%
Polyvinyl alcohol, 0.6% glucose, 5% glycerol, 84.9% deionized water composition, be specifically implemented according to the following steps:
Step 1, the corn stover that mass concentration percentage is 1.5%, 4.1% cornstarch, 3.9% poly- second are weighed
Enol, 0.6% glucose, 5% glycerol, 84.9% deionized water；
Step 2, each component weighed in step 1 is mixed well, then in 88-92 DEG C of stirring in water bath 35-45min, is obtained
Solution after obtaining water-bath；
Step 3, it by the solution curtain coating after water-bath in step 2 to PC resin plate, stands, later in 80-85 DEG C of dry 3-
3.5h obtains dry packing film；
Step 4, packing film dry in step 3 is cooled to room temperature, finally takes packing film off, obtained degradable
Packing film.
Embodiment 3
The degradable film for package of embodiment 3, raw material by 2% corn stover, 3.4% cornstarch, 3.4%
Polyvinyl alcohol, 0.4% glucose, 4.1% glycerol, 86.7% deionized water composition are specifically implemented according to the following steps:
Step 1, the corn stover that mass concentration percentage is 2%, 3.4% cornstarch, 3.4% polyethylene are weighed
Alcohol, 0.4% glucose, 4.1% glycerol, 86.7% deionized water；
Step 2, each component weighed in step 1 is mixed well, then in 88-92 DEG C of stirring in water bath 35-45min, is obtained
Solution after obtaining water-bath；
Step 3, it by the solution curtain coating after water-bath in step 2 to PC resin plate, stands, later in 80-85 DEG C of dry 3-
3.5h obtains dry packing film；
Step 4, packing film dry in step 3 is cooled to room temperature, finally takes packing film off, obtained degradable
Packing film.
During implementing foregoing invention, the additive amount of common corn starch, corn stover, polyvinyl alcohol and glycerol is chosen
The optimal value of each factor is determined using single factor experiment method for variable factor, then carries out orthogonal test, tests degradable packet
Mechanical performance, the permeability, vapor transfer rate of film are filled, so that it is determined that the mass concentration percentage of preferred degradable coating each component
Than the i.e. proportion of embodiment 1-3.
To each of the characterization properties of product of degradable film for package preferred in common corn starch film and embodiment 1-3
Parameter (tensile strength, extensibility, oxygen permeability coefficient, saturating carbon dioxide coefficient, vapor transfer rate, biodegradable effect and fresh-keeping effect) into
Row measurement, the results are shown in Table 1, and wherein "+" indicates effective, and " ++ " indicates that effect is preferable, and " +++ " indicates that effect is best.
As shown in Table 1, the degradable coating film of (1) embodiment 1-3, stretching for characterization product mechanical performance are strong
Degree, extensibility are high compared with common corn starch film, not cracky；
(2) the degradable coating film of embodiment 1-3 characterizes oxygen permeability coefficient, the saturating carbon dioxide of product barrier property
Coefficient, vapor transfer rate are small compared with common corn starch film, and barrier property is preferable.
(3) it is found by biodegradation test, the degradable coating film of embodiment 1-3, easily brittle in the soil, tool
There is excellent degradability.
(4) vacuum-packed technique is utilized, using this packed in thin film air-dry sausage and tealeaves, fresh-keeping effect is significant.
The result shows that the present invention prepares the superior degradable film for package of comprehensive performance using safe and reliable raw material, it will
Its vacuum packaging for being used for food packs excellent effect, overcomes existing composite plastic film flavor pack and be difficult to recycle, to environment
The shortcomings that pollution, meanwhile, degradable film for package of the invention is compared with existing cornstarch film, mechanical performance and barrier
Performance is enhanced.
Each parameter of the characterization properties of product of table 1
Those skilled in the art various changes and modifications can be made to the invention without departing from spirit of the invention and
Range, if these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology, then originally
Invention is also intended to include these modifications and variations.
Claims (1)
1. a kind of preparation method of degradable film for package, which is characterized in that be specifically implemented according to the following steps:
The corn stover that mass concentration percentage is 1.5-2.0% is weighed, the cornstarch of 3.2-4.2%, 3.4-3.9%'s is poly-
Vinyl alcohol, the glucose of 0.3-0.7%, the glycerol of 4-5%, the deionized water of 84.2-87.6%, the matter of above-mentioned each raw material component
Measuring the sum of percentage is 100%；
Weighed each raw material component is mixed well, it is molten after obtaining water-bath then in 88-92 DEG C of stirring in water bath 35-45min
Liquid；
By in the solution curtain coating after the water-bath to PC resin plate, 15-20min is stood, later in 80-85 DEG C of dry 3-3.5h,
Obtain dry packing film；
The packing film of the drying is cooled to room temperature, finally takes packing film off, obtains degradable film for package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077126.8A CN105602012B (en) | 2016-01-30 | 2016-01-30 | A kind of degradable film for package, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077126.8A CN105602012B (en) | 2016-01-30 | 2016-01-30 | A kind of degradable film for package, preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105602012A CN105602012A (en) | 2016-05-25 |
| CN105602012B true CN105602012B (en) | 2019-05-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610077126.8A Expired - Fee Related CN105602012B (en) | 2016-01-30 | 2016-01-30 | A kind of degradable film for package, preparation method and application |
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| Country | Link |
|---|---|
| CN (1) | CN105602012B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106220901A (en) * | 2016-08-22 | 2016-12-14 | 太湖华强科技有限公司 | Caprolactone starch degradable thin film that a kind of corn straw strengthens and preparation method thereof |
| CN107474554A (en) * | 2017-08-02 | 2017-12-15 | 安徽鼎正高分子材料科技有限责任公司 | A kind of water-soluble food packing film and preparation method thereof |
| CN107501625A (en) * | 2017-09-14 | 2017-12-22 | 广德美好包装科技有限公司 | A kind of food pack and preparation method thereof |
| CN108084473B (en) * | 2017-12-12 | 2020-10-27 | 西安工程大学 | Fully-degradable multifunctional film for fruit bags and preparation method thereof |
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