CN109401170A - A kind of nanometer food packaging material and preparation method thereof - Google Patents
A kind of nanometer food packaging material and preparation method thereof Download PDFInfo
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- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
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- C08J2429/00—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
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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Abstract
The present invention provides a kind of nanometer food packaging materials and preparation method thereof.It is made of following steps: (1) mixing all the components, be put into high-speed mixer and stir 1-1.5h in revolving speed；(2) it feeds the mixture into progress melt blending in double screw extruder and is granulated to obtain master batch, screw speed 40-50r/min, temperature of each section is successively are as follows: 120-130 DEG C, 130-140 DEG C, 140-150 DEG C, 150-160 DEG C, 150-160 DEG C；(3) master batch is blow molded into film, area's temperature is 125-135 DEG C, and two area's temperature are 135-145 DEG C, and three area's temperature are 150-160 DEG C, and four area's temperature are 145-155 DEG C, screw speed 40-50r/min.Nanometer food packaging material of the invention has good barrier and anti-microbial property, and collaboration improves fresh-keeping effect, while also having good mechanical property.
Description
Technical field
The present invention relates to packaging material fields, and in particular to a kind of nanometer food packaging material and preparation method thereof.
Background technique
The fresh-keeping of food is a complex art, so-called " fresh-keeping " to refer to food on the basis of guaranteeing safety, moreover it is possible to
Nutrition, color, quality and flavor etc. can be guaranteed, and fresh-keeping food is genuine food.Food fresh keeping packet
It includes anti-corrosion and fresh-keeping two broad aspects anti-corrosion refers to for microorganism, first is that prevent microorganism from causing to rot to food, two
It is the harm for preventing from producing malicious microorganism such as aspergillus flavus etc..Fresh-keeping referred to and refer to its physical and chemical index, physiology for food essence
The influence of mark and nutritional ingredient reserving degree etc..And cause food decay to go bad, be unable to the reason of long term storage, mainly micro- life
A system caused by the breedings of object and insects, growth and chemical factors oxygen in enzyme and ambient enviroment, temperature, humidity, light
Column biochemical reaction such as brown stain etc..So using good preservation technology to water fruits and vegetables, meat products, bean product, aquatic products etc. into
Row preservation, can not only extend the shelf-life of food, but also storage quality can be improved.Wherein, using effective packaging material for food
It is exactly a kind of effective preservation technology.
Summary of the invention
Technical problems to be solved: the object of the present invention is to provide a kind of nanometer food packaging materials to have good gas barrier
Property and anti-microbial property, collaboration improve fresh-keeping effect, while also have good mechanical property.
Technical solution: a kind of nanometer food packaging material is prepared by following component with parts by weight: composite nano-powder
30-40 parts, 2-5 parts of chitosan, 1-3 parts of calcium carbonate, 140-160 parts of maleic anhydride grafted polyethylene, 10-20 parts of polyvinyl alcohol,
2-3 parts of dispersing agent, 2-3 parts of inulin, 2-3 parts of hyaluronic acid, 0.5-1 parts of silver type 4A zeolite, 3-aminopropyltriethoxysilane
5-10 parts, γ -5-10 parts of methacryloxypropyl trimethoxy silane, 1-2 parts of giantreed charcoal.
Further, a kind of nanometer food packaging material, is prepared by following component with parts by weight: nano composite powder
35 parts of body, 4 parts of chitosan, 2 parts of calcium carbonate, 150 parts of maleic anhydride grafted polyethylene, 15 parts of polyvinyl alcohol, 2.5 parts of dispersing agent,
2.5 parts of inulin, 2.5 parts of hyaluronic acid, 0.8 part of silver type 4A zeolite, 7 parts of 3-aminopropyltriethoxysilane, γ-metering system
8 parts of acryloxypropylethoxysilane trimethoxy silane, 1.5 parts of giantreed charcoal.
Further, the composite nano-powder are as follows: nanometer yttrium aluminium garnet powder, montmorillonite, nano-titanium dioxide, silver nanoparticle
The mass ratio of stick is 1.5:1:2:1.5.
Further, the calcium carbonate partial size is 1-10 μm.
Further, the dispersing agent is calcium stearate, stearyl lactate, soybean lecithin, stearic acid, beeswax or stearic acid
One or more of magnesium.
Further, the giantreed charcoal the preparation method comprises the following steps:
Step 1: drying after giantreed is cleaned, 40 mesh are crushed to, are put into air dry oven in 105 DEG C of dry 5-8h；
Step 2: 10 parts of giantreed powder, 25 parts of pyrophosphoric acids and 30 parts of deionized waters are mixed, stirs evenly, impregnate 4- at room temperature
5h；
Step 3: filtering, is transferred in Muffle furnace, the carbonization-activation 1h at 350-600 DEG C；
Step 4: being cooled to room temperature, it is washed with distilled water to neutrality, the drying at 100 DEG C is put into baking oven, is ground to partial size <
20 μm to obtain the final product.
The preparation method of above-mentioned nanometer food packaging material the following steps are included:
(1) all the components are mixed, is put into high-speed mixer and stirs 1-1.5h in revolving speed；
(2) it feeds the mixture into double screw extruder and carries out melt blending and be granulated to obtain master batch, screw speed 40-50r/min,
Temperature of each section is successively are as follows: 120-130 DEG C, 130-140 DEG C, 140-150 DEG C, 150-160 DEG C, 150-160 DEG C；
(3) master batch is blow molded into film, area's temperature is 125-135 DEG C, and two area's temperature are 135-145 DEG C, and three area's temperature are
150-160 DEG C, four area's temperature are 145-155 DEG C, screw speed 40-50r/min.
The utility model has the advantages that
1. composite nano-powder can form with maleic anhydride grafted polyethylene, polyvinyl alcohol and arrange close structure, effectively
Improve barrier property.
2. composite nano-powder and silver type 4A zeolite all have good antibacterial effect, nano-titanium dioxide also has simultaneously to be kept
Itself clean and anti-droplet function.
3. the vapor transfer rate and oxygen permeating amount of material of the present invention are all lower, there is good barrier, small point of oxygen, aqueous vapor etc. can be prevented
Sub- penetration is entered, meanwhile, this packaging material also has good antibacterial property energy, can reduce the harm of bacterium, and collaboration mentions
High-preserved effect, meanwhile, material of the present invention also has good mechanical property.
Specific embodiment
Embodiment 1
A kind of nanometer food packaging material is prepared by following component with parts by weight: 30 parts of composite nano-powder, chitosan 2
Part, 1 part of calcium carbonate, 140 parts of maleic anhydride grafted polyethylene, 10 parts of polyvinyl alcohol, 2 parts of calcium stearate, 2 parts of inulin, hyalomitome
Sour 2 parts, 0.5 part of silver type 4A zeolite, 5 parts of 3-aminopropyltriethoxysilane, γ-methacryloxypropyl trimethoxy
5 parts of silane, 1 part of giantreed charcoal, wherein composite nano-powder is nanometer yttrium aluminium garnet powder, montmorillonite, nanometer titanium dioxide
Titanium, Silver nanorod mass ratio be 1.5:1:2:1.5.
Above-mentioned nanometer food packaging material the preparation method comprises the following steps:
(1) all the components are mixed, is put into high-speed mixer and stirs 1h in revolving speed；
(2) it feeds the mixture into double screw extruder and carries out melt blending and be granulated to obtain master batch, screw speed 40r/min, respectively
Duan Wendu is successively are as follows: 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 150 DEG C；
(3) master batch is blow molded into film, area's temperature is 125 DEG C, and two area's temperature are 135 DEG C, and three area's temperature are 150 DEG C, 4th area
Temperature is 145 DEG C, screw speed 40r/min.
Embodiment 2
A kind of nanometer food packaging material is prepared by following component with parts by weight: 35 parts of composite nano-powder, chitosan 4
Part, 2 parts of calcium carbonate, 150 parts of maleic anhydride grafted polyethylene, 15 parts of polyvinyl alcohol, 2.5 parts of stearyl lactate, inulin 2.5
Part, 2.5 parts of hyaluronic acid, 0.8 part of silver type 4A zeolite, 7 parts of 3-aminopropyltriethoxysilane, γ-methacryloxy
8 parts of propyl trimethoxy silicane, 1.5 parts of giantreed charcoal, wherein composite nano-powder is nanometer yttrium aluminium garnet powder, covers
De- soil, nano-titanium dioxide, Silver nanorod mass ratio be 1.5:1:2:1.5.
Above-mentioned nanometer food packaging material the preparation method comprises the following steps:
(1) all the components are mixed, is put into high-speed mixer and stirs 1h in revolving speed；
(2) it feeds the mixture into double screw extruder and carries out melt blending and be granulated to obtain master batch, screw speed 45r/min, respectively
Duan Wendu is successively are as follows: 125 DEG C, 135 DEG C, 145 DEG C, 155 DEG C, 155 DEG C；
(3) master batch is blow molded into film, area's temperature is 130 DEG C, and two area's temperature are 140 DEG C, and three area's temperature are 155 DEG C, 4th area
Temperature is 150 DEG C, screw speed 45r/min.
Embodiment 3
A kind of nanometer food packaging material is prepared by following component with parts by weight: 40 parts of composite nano-powder, chitosan 5
Part, 3 parts of calcium carbonate, 160 parts of maleic anhydride grafted polyethylene, 20 parts of polyvinyl alcohol, 3 parts of beeswax, 3 parts of inulin, hyaluronic acid 3
Part, 1 part of silver type 4A zeolite, 10 parts of 3-aminopropyltriethoxysilane, γ-methacryloxypropyl trimethoxy silane
10 parts, 2 parts of giantreed charcoal.
Above-mentioned nanometer food packaging material the preparation method comprises the following steps:
(1) all the components are mixed, is put into high-speed mixer and stirs 1.5h in revolving speed；
(2) it feeds the mixture into double screw extruder and carries out melt blending and be granulated to obtain master batch, screw speed 50r/min, respectively
Duan Wendu is successively are as follows: 130 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 160 DEG C；
(3) master batch is blow molded into film, area's temperature is 135 DEG C, and two area's temperature are 145 DEG C, and three area's temperature are 160 DEG C, 4th area
Temperature is 155 DEG C, screw speed 50r/min, wherein composite nano-powder is nanometer yttrium aluminium garnet powder, montmorillonite, receives
Rice titanium dioxide, Silver nanorod mass ratio be 1.5:1:2:1.5.
Comparative example 1
The present embodiment is the difference from embodiment 1 is that replace polyvinyl alcohol with maleic anhydride grafted polyethylene.Specifically:
A kind of nanometer food packaging material is prepared by following component with parts by weight: 30 parts of composite nano-powder, chitosan 2
Part, 1 part of calcium carbonate, 150 parts of maleic anhydride grafted polyethylene, 2 parts of calcium stearate, 2 parts of inulin, 2 parts of hyaluronic acid, silver type 4A boiling
0.5 part of stone, 5 parts of 3-aminopropyltriethoxysilane, 5 parts of γ-methacryloxypropyl trimethoxy silane, giantreed are raw
1 part of object charcoal, wherein composite nano-powder is nanometer yttrium aluminium garnet powder, montmorillonite, nano-titanium dioxide, Silver nanorod
Mass ratio is 1.5:1:2:1.5.
Above-mentioned nanometer food packaging material the preparation method comprises the following steps:
(1) all the components are mixed, is put into high-speed mixer and stirs 1h in revolving speed；
(2) it feeds the mixture into double screw extruder and carries out melt blending and be granulated to obtain master batch, screw speed 40r/min, respectively
Duan Wendu is successively are as follows: 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 150 DEG C；
(3) master batch is blow molded into film, area's temperature is 125 DEG C, and two area's temperature are 135 DEG C, and three area's temperature are 150 DEG C, 4th area
Temperature is 145 DEG C, screw speed 40r/min.
Comparative example 2
The present embodiment is not the difference from embodiment 1 is that contain silver type 4A zeolite.Specifically:
A kind of nanometer food packaging material is prepared by following component with parts by weight: 30 parts of composite nano-powder, chitosan 2
Part, 1 part of calcium carbonate, 140 parts of maleic anhydride grafted polyethylene, 10 parts of polyvinyl alcohol, 2 parts of calcium stearate, 2 parts of inulin, hyalomitome
2 parts of acid, 5 parts of 3-aminopropyltriethoxysilane, 5 parts of γ-methacryloxypropyl trimethoxy silane, giantreed biology
1 part of charcoal, wherein composite nano-powder is the matter of nanometer yttrium aluminium garnet powder, montmorillonite, nano-titanium dioxide, Silver nanorod
Amount is than being 1.5:1:2:1.5.
Above-mentioned nanometer food packaging material the preparation method comprises the following steps:
(1) all the components are mixed, is put into high-speed mixer and stirs 1h in revolving speed；
(2) it feeds the mixture into double screw extruder and carries out melt blending and be granulated to obtain master batch, screw speed 40r/min, respectively
Duan Wendu is successively are as follows: 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 150 DEG C；
(3) master batch is blow molded into film, area's temperature is 125 DEG C, and two area's temperature are 135 DEG C, and three area's temperature are 150 DEG C, 4th area
Temperature is 145 DEG C, screw speed 40r/min.
Comparative example 3
The present embodiment is not the difference from embodiment 1 is that contain Silver nanorod.Specifically:
A kind of nanometer food packaging material is prepared by following component with parts by weight: 30 parts of composite nano-powder, chitosan 2
Part, 1 part of calcium carbonate, 140 parts of maleic anhydride grafted polyethylene, 10 parts of polyvinyl alcohol, 2 parts of calcium stearate, 2 parts of inulin, hyalomitome
Sour 2 parts, 0.5 part of silver type 4A zeolite, 5 parts of 3-aminopropyltriethoxysilane, γ-methacryloxypropyl trimethoxy
5 parts of silane, 1 part of giantreed charcoal, wherein composite nano-powder is nanometer yttrium aluminium garnet powder, montmorillonite, nanometer titanium dioxide
The mass ratio of titanium is 1.5:1:2.
Above-mentioned nanometer food packaging material the preparation method comprises the following steps:
(1) all the components are mixed, is put into high-speed mixer and stirs 1h in revolving speed；
(2) it feeds the mixture into double screw extruder and carries out melt blending and be granulated to obtain master batch, screw speed 40r/min, respectively
Duan Wendu is successively are as follows: 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 150 DEG C；
(3) master batch is blow molded into film, area's temperature is 125 DEG C, and two area's temperature are 135 DEG C, and three area's temperature are 150 DEG C, 4th area
Temperature is 145 DEG C, screw speed 40r/min.
The measurement of biocidal property:, will be for examination bacterium access using filter paper inhibition zone method measurement preservative film to the inhibitory effect for trying bacterium
In aseptic liquid nutrient medium, activation is cultivated for 24 hours in 37 DEG C, the constant-temperature table of 120r/min.Bacterium after drawing a part activation
In kind liquid access sterile water, 10 sufficiently are made after oscillation7The initial bacterium solution of cfu/m L.
Sterilized LB solid medium is placed at room temperature, is cooled to after preference temperature down to sterile petri dish, wait cultivate
It is spare after base solidification.It draws the initial bacterium solution of 0.1mL and is seeded to LB culture medium, dispersed bacterium solution with sterilized glass spreading rod
It is even.It takes 1g preservative film to be dissolved in 10ml deionized water, takes 10uL preservative film drop in the aseptic filter paper on piece that diameter is 6mm, use
Tweezers drain filter paper in superclean bench, and the filter paper of sterile water is added dropwise as control.Then it is affixed on containing for trying bacterium
Culture medium on, plate back-off be placed in temperature be in 37 DEG C of incubator for 24 hours.After culture, antibacterial circle diameter is used
Vernier caliper measures.
The partial properties index of 1 nanometer food packaging material of table
The partial properties index of nanometer food packaging material of the present invention is seen the above table, it will be seen that the moisture-inhibiting of material of the present invention
Amount and oxygen permeating amount are all lower, have good barrier, can prevent the infiltration of the small-molecule substances such as oxygen, aqueous vapor from entering, meanwhile, this
Packaging material also has good antibacterial property energy, can reduce the harm of bacterium, and collaboration improves fresh-keeping effect, meanwhile, the present invention
Material also has good mechanical property.
Claims (7)
1. a kind of nanometer food packaging material, it is characterised in that: be prepared by following component with parts by weight: composite nano-powder
30-40 parts, 2-5 parts of chitosan, 1-3 parts of calcium carbonate, 140-160 parts of maleic anhydride grafted polyethylene, 10-20 parts of polyvinyl alcohol,
2-3 parts of dispersing agent, 2-3 parts of inulin, 2-3 parts of hyaluronic acid, 0.5-1 parts of silver type 4A zeolite, 3-aminopropyltriethoxysilane
5-10 parts, γ -5-10 parts of methacryloxypropyl trimethoxy silane, 1-2 parts of giantreed charcoal.
2. a kind of nanometer food packaging material according to claim 1, it is characterised in that: by following component with parts by weight system
It is standby to form: 35 parts of composite nano-powder, 4 parts of chitosan, 2 parts of calcium carbonate, 150 parts of maleic anhydride grafted polyethylene, polyvinyl alcohol
15 parts, 2.5 parts of dispersing agent, 2.5 parts of inulin, 2.5 parts of hyaluronic acid, 0.8 part of silver type 4A zeolite, 3- aminopropyl triethoxysilicane
7 parts of alkane, 8 parts of γ-methacryloxypropyl trimethoxy silane, 1.5 parts of giantreed charcoal.
3. a kind of nanometer food packaging material according to claim 1, it is characterised in that: the composite nano-powder are as follows:
Nanometer yttrium aluminium garnet powder, montmorillonite, nano-titanium dioxide, Silver nanorod mass ratio be 1.5:1:2:1.5.
4. a kind of nanometer food packaging material according to claim 1, it is characterised in that: the calcium carbonate partial size is 1-10
μm。
5. a kind of nanometer food packaging material according to claim 1, it is characterised in that: the dispersing agent is stearic acid
One or more of calcium, stearyl lactate, soybean lecithin, stearic acid, beeswax or magnesium stearate.
6. a kind of nanometer food packaging material according to claim 1, it is characterised in that: the preparation of the giantreed charcoal
Method are as follows:
Step 1: drying after giantreed is cleaned, 40 mesh are crushed to, are put into air dry oven in 105 DEG C of dry 5-8h；
Step 2: 10 parts of giantreed powder, 25 parts of pyrophosphoric acids and 30 parts of deionized waters are mixed, stirs evenly, impregnate 4- at room temperature
5h；
Step 3: filtering, is transferred in Muffle furnace, the carbonization-activation 1h at 350-600 DEG C；
Step 4: being cooled to room temperature, it is washed with distilled water to neutrality, the drying at 100 DEG C is put into baking oven, is ground to partial size <
20 μm to obtain the final product.
7. a kind of preparation method of nanometer food packaging material according to claim 1 to 2, it is characterised in that: including following
Step:
(1) all the components are mixed, is put into high-speed mixer and stirs 1-1.5h in revolving speed；
(2) it feeds the mixture into double screw extruder and carries out melt blending and be granulated to obtain master batch, screw speed 40-50r/min,
Temperature of each section is successively are as follows: 120-130 DEG C, 130-140 DEG C, 140-150 DEG C, 150-160 DEG C, 150-160 DEG C；
(3) master batch is blow molded into film, area's temperature is 125-135 DEG C, and two area's temperature are 135-145 DEG C, and three area's temperature are
150-160 DEG C, four area's temperature are 145-155 DEG C, screw speed 40-50r/min.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| WO2024002849A1 (en) * | 2022-06-29 | 2024-01-04 | Reckitt Benckiser Finish B.V. | Water-soluble film comprising at least one poly(vinyl alcohol) |
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