CN114891361A - Environment-friendly easily-degradable packaging bag and preparation method thereof - Google Patents
Environment-friendly easily-degradable packaging bag and preparation method thereof Download PDFInfo
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 83
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 28
- 235000011187 glycerol Nutrition 0.000 claims abstract description 28
- 239000000661 sodium alginate Substances 0.000 claims abstract description 28
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 28
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 18
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 18
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims description 16
- 206010033546 Pallor Diseases 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 239000011268 mixed slurry Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000007872 degassing Methods 0.000 claims description 8
- 238000004108 freeze drying Methods 0.000 claims description 6
- 238000009849 vacuum degassing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims 1
- 239000004014 plasticizer Substances 0.000 abstract description 6
- 239000002562 thickening agent Substances 0.000 abstract description 5
- 230000004888 barrier function Effects 0.000 abstract description 3
- 239000005022 packaging material Substances 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract description 2
- 235000013305 food Nutrition 0.000 abstract description 2
- 235000012055 fruits and vegetables Nutrition 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 238000010345 tape casting Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 57
- 230000000694 effects Effects 0.000 description 10
- 230000035699 permeability Effects 0.000 description 10
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 9
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 9
- 239000000835 fiber Substances 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
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- 230000005540 biological transmission Effects 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 4
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- 239000002932 luster Substances 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
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- 239000001814 pectin Substances 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
-
- 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
- B65D65/466—Bio- or photodegradable packaging materials
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- 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
- C08J2399/00—Characterised by the use of natural macromolecular compounds or of derivatives thereof not provided for in groups C08J2301/00 - C08J2307/00 or C08J2389/00 - C08J2397/00
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- 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
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/08—Cellulose derivatives
- C08J2401/26—Cellulose ethers
- C08J2401/28—Alkyl ethers
-
- 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
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/04—Alginic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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- 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
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Abstract
The invention discloses an environment-friendly and easily degradable packaging bag and a preparation method thereof, wherein the environment-friendly and easily degradable packaging bag comprises the following components in percentage by mass: the orange peel powder is 1-2%, the sodium alginate is 0.05-0.1%, the sodium carboxymethylcellulose is 0.15-0.3%, the glycerol is 0.1-0.4%, and the balance is water, the natural orange peel is used as a base material, the sodium alginate and the sodium carboxymethylcellulose are added as thickeners in an auxiliary mode, the glycerol is a plasticizer, the orange peel film is prepared by tape casting, the film is smooth in appearance and uniform in thickness, the original color of the orange peel is reserved, the orange peel film is a novel green, environment-friendly, non-toxic and harmless packaging material capable of being naturally biodegraded, and the orange peel film has better mechanical property and barrier property compared with other fruit and vegetable films, has a certain application potential on food packaging, not only meets the current trend of green packaging development, but also promotes the cyclic utilization of resources, and is very worthy of popularization.
Description
Technical Field
The invention relates to the technical field of packaging bags, in particular to an environment-friendly and easily degradable packaging bag.
Background
The packaging bag is a bag used for packaging various articles, so that goods are convenient to transport and easy to store in a production flow process, the packaging bag is widely used in daily life and industrial production, actual numbers show that 80% of used plastic bags are finally transported to a garbage piling field area to be treated like common garbage, and only seven percent of plastic is recycled.
Because the plastic packaging bag cannot be naturally degraded and the waste plastic bag causes serious pollution to the environment, which is contrary to the environmental protection policy advocated by the state, the invention of the packaging bag which is environment-friendly and easy to degrade is urgent.
SUMMARY OF THE PATENT FOR INVENTION
The invention aims to provide an environment-friendly and easily degradable packaging bag, and in order to achieve the purpose, the invention provides the following technical scheme: the environment-friendly and easily degradable packaging bag comprises the following components in percentage by mass: orange peel powder 1-2%, sodium alginate 0.05-0.1%, sodium carboxymethylcellulose 0.15-0.3%, glycerol 0.1-0.4%, and water in balance.
Preferably, the environment-friendly and easily degradable packaging bag comprises the following components in parts by weight: 1.5 parts of orange peel powder, 0.1 part of sodium alginate, 0.2 part of sodium carboxymethylcellulose, 0.2 part of glycerol and the balance of water.
A preparation method of an environment-friendly and easily degradable packaging bag comprises the following steps:
(1) blanching: cutting orange peel into small pieces, putting the small pieces into a blanching machine for blanching, and taking out the orange peel;
(2) freeze-drying and crushing: putting the blanched orange peel into a freeze dryer for freeze drying, putting the freeze-dried orange peel into an ultrafine grinder for grinding, and putting the powder into a sealed bag for later use;
(3) homogenizing: adding clear water into a stirrer, then putting the orange peel powder into the clear water for stirring, then sequentially putting the sodium carboxymethyl cellulose, the sodium alginate and the glycerol into the stirrer for fully stirring and dissolving to obtain mixed slurry, and then putting the mixed slurry into a homogenizer for homogenizing;
(4) degassing: and (4) putting the homogenized mixed slurry into a vacuum degassing box for degassing until all gas is extracted.
(5) And (3) drying: and pouring the degassed slurry into a glass film former, drying in an oven to form a film, and putting the film material into a bag making machine to obtain a finished packaging bag.
Preferably, the volume of the small pieces of orange peel in the step (1) is 1cm 3 And the blanching time is 10min, and cold water is adopted for cooling after blanching.
Preferably, the orange peel powder crushed in the step (2) is sieved by using a 140-mesh sieve.
Preferably, the rotation speed of the stirrer in the step (3) is 500r/min, and the stirring time of the stirrer is 10 min.
Preferably, the pressure of the homogenizer in the step (3) is 30MPa, and the homogenizing time of the homogenizer is 5 min.
Preferably, the pressure of the vacuum degassing box in the step (4) is-0.09 MPa.
Preferably, the drying temperature of the oven in the step (5) is 60 degrees, the drying time of the oven is 6 hours, and the film forming state needs to be observed continuously during the drying process.
Compared with the prior art, the invention has the following beneficial effects:
the natural orange peel is used as a base material, sodium alginate and sodium carboxymethylcellulose are added as thickeners in an auxiliary mode, glycerin is used as a plasticizer, the orange peel membrane is prepared by tape casting, the membrane is smooth in appearance and uniform in thickness, the original color and luster of the orange peel are reserved, the membrane is a novel environment-friendly, non-toxic, harmless and naturally biodegradable packaging material, and the orange peel membrane has better mechanical property and barrier property compared with other fruit and vegetable membranes, has a certain application potential on food packaging, not only accords with the trend of current green packaging development, but also promotes the cyclic utilization of resources, and therefore the membrane is very worthy of popularization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a figure showing the influence of orange peel concentration on membrane performance;
FIG. 2 is a drawing showing the effect of sodium alginate concentration on membrane performance in accordance with the present invention;
FIG. 3 is a graph showing the effect of sodium carboxymethylcellulose concentration on membrane performance in accordance with the present invention;
FIG. 4 is a graph showing the effect of glycerol concentration on membrane performance in accordance with the present invention;
FIG. 5 is a graph showing the levels of the orthogonality test factors according to the present invention;
FIG. 6 is a diagram of an orthogonal assay architecture according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments in the present invention patent, and it is obvious that the described embodiments are only a part of the embodiments of the present invention patent, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.
The environment-friendly and easily degradable packaging bag comprises the following components in percentage by mass: 1-2% of orange peel powder, 0.05-0.1% of sodium alginate, 0.15-0.3% of sodium carboxymethylcellulose, 0.1-0.4% of glycerol and the balance of water; the environment-friendly and easily degradable packaging bag comprises the following components in parts by weight: 1.5 parts of orange peel powder, 0.1 part of sodium alginate, 0.2 part of sodium carboxymethylcellulose, 0.2 part of glycerol and the balance of water, and the preparation method comprises the following steps:
(1) blanching: cutting orange peel into small pieces, putting the small pieces into a blanching machine for blanching, and taking out the orange peel;
(2) freeze-drying and crushing: putting the blanched orange peel into a freeze dryer for freeze drying, putting the freeze-dried orange peel into an ultrafine grinder for grinding, and putting the powder into a sealed bag for later use;
(3) homogenizing: adding clear water into a stirrer, then putting the orange peel powder into the clear water for stirring, then sequentially putting the sodium carboxymethyl cellulose, the sodium alginate and the glycerol into the stirrer for fully stirring and dissolving to obtain mixed slurry, and then putting the mixed slurry into a homogenizer for homogenizing;
(4) degassing: and (4) putting the homogenized mixed slurry into a vacuum degassing box for degassing until all gas is extracted.
(5) And (3) drying: and pouring the degassed slurry into a glass film former, drying in an oven to form a film, and putting the film material into a bag making machine to obtain a finished packaging bag.
Preferably, the volume of the small pieces of orange peel in step (1) is 1cm 3 The blanching time is 10min, and cold water is adopted for cooling after blanching.
Preferably, the orange peel powder crushed in the step (2) is sieved by a 140-mesh sieve.
Preferably, the rotating speed of the stirrer in the step (3) is 500r/min, and the stirring time of the stirrer is 10 min.
Preferably, the pressure of the homogenizer in the step (3) is 30MPa, and the homogenizing time of the homogenizer is 5 min.
Preferably, the pressure of the vacuum degassing box in the step (4) is-0.09 MPa.
Preferably, the drying temperature of the oven in the step (5) is 60 degrees, the drying time of the oven is 6 hours, and the film forming state needs to be continuously observed in the drying process.
The first embodiment is as follows:
effect of orange peel concentration on membrane performance:
as can be seen from fig. 1 a: the tensile strength and the elongation at break of the film are increased and then reduced along with the increase of orange peel in the film forming solution, when the concentration of the orange peel is 2 percent, the mechanical property of the film is optimal, the tensile strength is 24.9lMPa, and the elongation at break is 16.18 percent, because the orange peel is a main base material for film forming, contains more film forming macromolecular substances such as crude fibers, pectin and the like, and is easy to form hydrogen bond and other interactions, when the concentration is too low, the film forming solution is easy to flow due to small viscosity, the compactness and the continuity of the film are poor, so that the thickness is uneven, a compact internal structure cannot be formed, the mechanical property is poor, the interaction among the components is enhanced along with the increase of the orange peel concentration to form a rigid structure, so that the tensile strength and the elongation at break are gradually increased, when the concentration is more than 2 percent, the film forming solution is too thick, the flowability is poor, the crude fibers are excessive to cause agglomeration, and the activity blocking effect among molecules is weakened, the thickness unevenness leads to a reduction in tensile strength and ductility, fig. 1b shows: along with the increase of the addition amount of the orange peel, the water vapor permeability coefficient of the membrane is firstly reduced and then increased, when the concentration of the orange peel powder is 2%, the water vapor permeability coefficient of the prepared membrane is the lowest, the water resistance is better, the concentration of the orange peel is increased, the intermolecular interaction between the orange peel and the thickening agent is enhanced, the intermolecular binding is tighter, the compactness and the continuity of the membrane are enhanced, a stable rigid structure is formed inside the membrane, the water vapor permeability coefficient of the membrane has a reduction trend, when the concentration of the orange peel is more than 2%, the content of crude fibers in the membrane forming solution is increased, the internal reticular structure is damaged, the adsorption effect among the crude fibers causes agglomeration, the viscosity of the membrane forming solution is increased, bubbles are generated, the permeability of the membrane is increased, and in sum, when the concentration of the orange peel is 2%, the comprehensive performance of the membrane is the best.
Example two:
effect of sodium alginate concentration on Membrane Performance
The membrane prepared by taking the orange peels as a single raw material has poor performance, and a certain amount of auxiliary agent needs to be added into a film forming solution, so that the internal structure of the membrane is more compact, and the comprehensive performance of the membrane is improved, as shown in figure 2 a: the tensile strength and the elongation at break of the membrane are increased and then reduced along with the increase of the addition amount of the sodium alginate, when the concentration of the sodium alginate is 0.15 percent, the tensile property of the membrane is optimal, the sodium alginate is used as a thickening agent, the viscosity of the membrane forming solution can be improved by adding a proper amount of the sodium alginate, the structure of the membrane is tighter and the tensile strength is better, the sodium alginate can provide more hydrogen bonds, specific groups and bonds are combined with fiber molecules and connected on a polymer chain segment, linear molecules are connected into a certain space network structure, the interaction among the molecules is enhanced, so the tensile strength and the elongation at break of the membrane are increased along with the increase of the sodium alginate, when the concentration of the sodium alginate is higher, the excessive sodium alginate is filled into the space structure of the membrane, the original compact structure of the membrane is damaged, the mechanical property is reduced, and the tensile strength and the elongation at break are both reduced, FIG. 2b shows: the water vapor permeability coefficient increases along with the increase of sodium alginate concentration, but the general trend is gentler, the change is not significant, the reason is that sodium alginate is a hydrophilic substance, the increase of the concentration also leads to the increase of the number of hydrophilic groups, the hydrophilic capability of the membrane also gradually increases, and further the water vapor permeability coefficient gradually increases, but when the sodium alginate is excessively added, the membrane forming solution is excessively sticky, the degassing is difficult, the surface of the dried membrane is defective due to air holes, the structure of the membrane lacks uniformity, the comprehensive performance is reduced, and in sum, the comprehensive performance is better when the concentration of the sodium alginate is 0.15%.
Example three:
effect of sodium carboxymethylcellulose concentration on Membrane Performance
Fig. 3a shows: with the increase of the addition amount of the sodium carboxymethyl cellulose, the tensile strength and the elongation at break of the membrane are both increased and then decreased, when the concentration of the sodium carboxymethyl cellulose is 0.15%, the tensile strength is optimal, the reason may be that the CMC can provide more hydrogen bonds and radicals, the CMC can be combined with cellulose molecules in orange peel and is connected to a polymer chain segment, so that a certain space network structure is formed by intermolecular interaction, with the increase of the concentration of the CMC, the intermolecular force is increased, the structural stability is enhanced, the tensile strength and the elongation at break of the membrane are both increased, when the concentration of the CMC is continuously increased, both of the CMC and the additive thereof are in a descending trend, the reason may be that the CMC and the additive thereof generate intermolecular force, so that the viscosity of a membrane-forming solution is increased and the membrane-forming solution is not easy to degas, and obvious defects appear in drying and membrane-forming, fig. 3b shows that: the integral change of the water vapor transmission coefficient of the membrane is gentle and is in an increasing trend, the water vapor transmission coefficient is the minimum when the concentration is 0.15%, the reason is that the CMC and fiber molecules are combined more tightly under the concentration, the intermolecular force is stronger, the continuity of the membrane is better, the barrier property of the membrane is enhanced to a certain extent, along with the increase of the addition amount of the CMC, the membrane forming liquid is sticky, the degassing is difficult, the membrane forming is uneven and pores are easy to appear, so that the membrane transmission rate is increased, and in conclusion, when the concentration of the CMC is 0.15%, the comprehensive performance of the membrane is better.
Example four:
effect of Glycerol concentration on Membrane Performance
The addition of a plasticizer to the deposition solution improves the film properties, and the plasticizer reduces intermolecular forces, thereby softening the rigid structure of the film and increasing flexibility and ductility, as shown in FIG. 4 a: along with the increase of the concentration of the glycerol, the tensile strength of the membrane is gradually reduced, the elongation at break is gradually increased, the reason is that the glycerol is a micromolecular substance and can easily enter between macromolecules of the orange peel matrix, the structure of the original macromolecular chain in the membrane is damaged, the acting force between the macromolecules is reduced, the free space of the molecules in the membrane structure of the orange peel is increased, the crystallinity is reduced, the orderliness of the molecules is damaged, the hydrogen bonding action between the molecules is weakened, the tensile strength of the membrane is reduced, the elongation at break is increased mainly because the glycerol molecules enter between the macromolecules of the polymer, the interaction force between the cellulose molecules in the orange peel and the thickening agent is weakened, the rigid structure of the orange peel membrane is softened, the mobility of the molecular chain is increased, the toughness and the ductility of the membrane are improved, and the interaction between the polymer molecular chains can be reduced by using the glycerol as a plasticizer, thereby reducing the strength of the orange peel film and improving the flexibility, and fig. 4b shows that: the water vapor permeability coefficient of the membrane is slowly increased along with the increase of the addition amount of the glycerol, the increase range is slow when the mass concentration of the glycerol is 0.1-0.3%, and the increase range of the water vapor permeability coefficient is large when the mass concentration of the glycerol is more than 0.3%, the glycerol is a hydrophilic micromolecule plasticizer, the glycerol can easily enter molecular chains of a membrane forming substrate along with the increase of the glycerol, the hydrogen bonding effect among macromolecules is reduced, the structure of the membrane is looser, meanwhile, the increase of the glycerol causes the increase of hydrophilic groups, and the moisture permeability of the membrane is macroscopically improved, and in sum, the comprehensive performance is the best when the concentration of the glycerol is 0.3%.
Example five:
quadrature test
As can be seen from the single-factor experimental results, the orange involucra has certain mechanical strength andbarrier property, the water vapor permeability coefficient of different factors under different levels is in the same order of magnitude, and the change is not obvious, when the film is used as a packaging material, a certain mechanical strength is firstly achieved, so the tensile strength of the film is used as a preferred index, and L is carried out on the basis of a single-factor experiment 9 (3 4 ) In the orthogonal test, the factor levels are shown in fig. 5, the analysis result is shown in fig. 6, and the extremely poor analysis of fig. 6 shows that the factors influencing the tensile strength of the membrane are ranked in turn as follows: concentration of Glycerol>Concentration of pericarpium Citri Junoris>Sodium carboxymethylcellulose concentration>The optimal combination of the sodium alginate concentration and the tensile strength is A 1 B 1 C 3 D 1 Namely: the orange peel powder concentration is 1.5%, the sodium alginate concentration is 0.1%, the sodium carboxymethylcellulose concentration is 0.2%, and the glycerol concentration is 0.2%, and the verification test result shows that the film prepared under the formula has uniform color and luster, flat and smooth appearance, the measured tensile strength of the film is 24.08MPa, and the tensile strength conforms to the expected result, and other performance indexes are as follows: elongation at break of 15.73 percent and water vapor transmission coefficient of 1.686X10 -12 g·cm·cm -2 ·s -1 ·Pa -1 。
Although embodiments of the present patent have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present patent, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an easy degradable wrapping bag of environmental protection which characterized in that: the environment-friendly and easily degradable packaging bag comprises the following components in percentage by mass: orange peel powder 1-2%, sodium alginate 0.05-0.1%, sodium carboxymethylcellulose 0.15-0.3%, glycerol 0.1-0.4%, and water in balance.
2. The environmentally friendly and easily degradable packaging bag of claim 1, wherein: the environment-friendly and easily degradable packaging bag comprises the following components in parts by weight: 1.5 parts of orange peel powder, 0.1 part of sodium alginate, 0.2 part of sodium carboxymethylcellulose, 0.2 part of glycerol and the balance of water.
3. The method for preparing the environmentally friendly and easily degradable packaging bag according to any one of claims 1 to 2, wherein the method comprises the following steps: the preparation method comprises the following steps:
(1) blanching: cutting orange peel into small pieces, putting the small pieces into a blanching machine for blanching, and taking out the orange peel;
(2) freeze-drying and crushing: putting the blanched orange peel into a freeze dryer for freeze drying, putting the freeze-dried orange peel into an ultrafine grinder for grinding, and putting the powder into a sealed bag for later use;
(3) homogenizing: adding clear water into a stirrer, then putting the orange peel powder into the clear water for stirring, then sequentially putting the sodium carboxymethyl cellulose, the sodium alginate and the glycerol into the stirrer for fully stirring and dissolving to obtain mixed slurry, and then putting the mixed slurry into a homogenizer for homogenizing;
(4) degassing: and (4) putting the homogenized mixed slurry into a vacuum degassing box for degassing until all gas is extracted.
(5) And (3) drying: and pouring the degassed slurry into a glass film former, drying in an oven to form a film, and putting the film material into a bag making machine to obtain a finished packaging bag.
4. The method for preparing the environment-friendly and easily degradable packaging bag according to claim 3, wherein the method comprises the following steps: the volume of the small orange peel blocks in the step (1) is 1cm 3 And the blanching time is 10min, and cold water is adopted for cooling after blanching.
5. The method for preparing the environment-friendly and easily degradable packaging bag according to claim 3, wherein the method comprises the following steps: and (3) screening the orange peel powder crushed in the step (2) by using a 140-mesh sieve.
6. The method for preparing the environment-friendly and easily degradable packaging bag according to claim 3, wherein the method comprises the following steps: and (4) in the step (3), the rotating speed of the stirrer is 500r/min, and the stirring time of the stirrer is 10 min.
7. The method for preparing the environment-friendly and easily degradable packaging bag according to claim 3, wherein the method comprises the following steps: the pressure of the homogenizer in the step (3) is 30MPa, and the homogenizing time of the homogenizer is 5 min.
8. The method for preparing the environment-friendly and easily degradable packaging bag according to claim 3, wherein the method comprises the following steps: the pressure of the vacuum degassing box in the step (4) is-0.09 MPa.
9. The method for preparing the environment-friendly and easily degradable packaging bag according to claim 3, wherein the method comprises the following steps: the drying temperature of the oven in the step (5) is 60 degrees, the drying time of the oven is 6 hours, and the film forming state of the oven needs to be continuously observed in the drying process.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI736152B (en) * | 2020-02-27 | 2021-08-11 | 國立嘉義大學 | Preparing method of citrus flesh package |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI736152B (en) * | 2020-02-27 | 2021-08-11 | 國立嘉義大學 | Preparing method of citrus flesh package |
Non-Patent Citations (4)
| Title |
|---|
| 李芷依等: "火龙果皮基膜成膜配方优化研究", 《中国果菜》 * |
| 李荣荣等: "毛竹采伐剩余物制备可降解膜的研究", 《安徽农业大学学报》 * |
| 李见森: "柳橙皮基抗菌膜的制备、性能研究及其在冷鲜肉中的应用", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
| 李见森等: "柳橙皮基可降解膜的制备及其性能研究", 《农业环境科学学报》 * |
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Application publication date: 20220812 |