CN107083045B - Method for preparing degradable packaging film by using blue algae as base material - Google Patents
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- 241000195493 Cryptophyta Species 0.000 title claims abstract description 36
- 239000012785 packaging film Substances 0.000 title claims abstract description 23
- 229920006280 packaging film Polymers 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 title claims abstract description 18
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 21
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 229920002678 cellulose Polymers 0.000 claims abstract description 15
- 239000001913 cellulose Substances 0.000 claims abstract description 15
- 235000010980 cellulose Nutrition 0.000 claims abstract description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 13
- 230000002255 enzymatic effect Effects 0.000 claims abstract description 13
- 238000000605 extraction Methods 0.000 claims abstract description 13
- 239000000413 hydrolysate Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 9
- 239000012948 isocyanate Substances 0.000 claims abstract description 9
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 108010059892 Cellulase Proteins 0.000 claims abstract description 7
- 229920000168 Microcrystalline cellulose Polymers 0.000 claims abstract description 7
- 108091005804 Peptidases Proteins 0.000 claims abstract description 7
- 239000004365 Protease Substances 0.000 claims abstract description 7
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 claims abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 229940106157 cellulase Drugs 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 235000019813 microcrystalline cellulose Nutrition 0.000 claims abstract description 7
- 239000008108 microcrystalline cellulose Substances 0.000 claims abstract description 7
- 229940016286 microcrystalline cellulose Drugs 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 7
- 239000000284 extract Substances 0.000 claims abstract description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 36
- 239000000243 solution Substances 0.000 claims description 15
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 12
- 102000004190 Enzymes Human genes 0.000 claims description 6
- 108090000790 Enzymes Proteins 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 6
- 229940088598 enzyme Drugs 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 230000000415 inactivating effect Effects 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229940083037 simethicone Drugs 0.000 claims description 6
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 5
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 5
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 5
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 3
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 3
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 abstract description 2
- 150000005846 sugar alcohols Polymers 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 229920002545 silicone oil Polymers 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 12
- 239000004033 plastic Substances 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 239000005022 packaging material Substances 0.000 description 8
- 230000035699 permeability Effects 0.000 description 8
- 235000013305 food Nutrition 0.000 description 7
- 238000004806 packaging method and process Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010816 packaging waste Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 1
- 239000011091 composite packaging material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material 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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- 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
-
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- 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
- C08J2401/02—Cellulose; Modified cellulose
- C08J2401/04—Oxycellulose; Hydrocellulose
-
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four 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
- 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
Abstract
The invention provides a method for preparing a degradable packaging film by using blue algae as a base material, which comprises the steps of firstly taking blue algae, cleaning, drying, crushing into micro powder, adding the micro powder into water, and adding liquid cellulase and protease for enzymolysis; and adding the enzymatic hydrolysate into an extracting agent for extraction, discarding an extraction phase, collecting a water phase, performing reduced pressure concentration, adding isocyanate into a concentrated solution, heating for reaction, adding glycerol, microcrystalline cellulose, dimethyl silicone oil, calcium carbonate, titanium dioxide, cellulose, citric acid and polyvinyl alcohol, mixing, and then introducing into a double-layer co-extrusion casting machine for casting to obtain the composite material. The invention extracts the polyhydric alcohol from the blue algae, reacts with isocyanate, and then adds cellulose and polyvinyl alcohol to prepare the degradable packaging film, and the obtained film has good mechanical property and barrier property.
Description
Technical Field
The invention belongs to the technical field of packaging materials, and particularly relates to a method for preparing a degradable packaging film by using blue algae as a base material.
Background
The plastic is a high polymer material with good plasticity, is used in the field of packaging, and has unique performance compared with the traditional packaging materials (paper, metal, glass and the like). Various packaging materials made of plastics, such as plastic films, plastic bags, plastic drums and boxes, plastic bottles and cans, composite packaging materials and the like, are widely applied to the field of food packaging, and the market demand is on the rise year by year. Plastic packaging materials can be widely used in food packaging because of their unique and advantageous properties, such as excellent physical and mechanical properties, good chemical stability, light weight, good processability, good appearance, and easy coloring. However, some plastic materials have poor hygienic safety performance, and the packaging waste thereof can have great influence on the environment, thereby influencing the use of the plastic packaging materials in some food packaging fields. However, with the continuous push out and iterative update of new plastic materials, the application of plastic packaging materials in the food field is still dominant compared with other packaging materials.
With the continuous development of plastic film packaging materials and the continuous improvement of processing technologies, food plastic packaging films have entered into the lives of people, and the negative effects and the damages caused by the waste of plastic packaging to the environment are increased. Nowadays, with the continuous enhancement of environmental protection consciousness of people, the food packaging has higher and higher requirements, on one hand, the requirements on the fresh-keeping period of the packaged food are longer and longer, on the other hand, the packaging waste is expected to be degraded by self, and the environmental pollution cannot be generated, so that the demand on green packaging is more and more. In order to obtain food packaging films with more excellent performance and environmental friendliness, the processing technology must be continuously improved and high-quality materials must be selected for preparation.
Disclosure of Invention
The technical problem to be solved is as follows: the invention aims to provide a method for preparing a degradable packaging film by using blue algae as a base material.
The technical scheme is as follows: a method for preparing a degradable packaging film by using blue algae as a base material comprises the following steps:
step 1, cleaning and drying blue algae, and crushing the blue algae into micro powder;
step 2, adding 1 part of the micro powder obtained in the step 1 into 10 parts of water by weight, adding 0.05-0.1 part of liquid cellulase and 0.05-0.1 part of protease, heating to 40-50 ℃ for enzymolysis for 2-4h, inactivating enzyme, and filtering to obtain an enzymolysis liquid;
step 3, adding the enzymatic hydrolysate obtained in the step 2 into an extracting agent with the volume of 3-5 times that of the enzymatic hydrolysate for extraction, discarding an extraction phase, collecting a water phase, and performing reduced pressure concentration to obtain a concentrated solution;
and 4, adding 2-5 parts by weight of isocyanate into 30 parts by weight of the concentrated solution obtained in the step 3, heating to 50-70 ℃ for reaction for 2-4h, then adding 0.8-1.5 parts by weight of glycerol, 0.5-1.2 parts by weight of microcrystalline cellulose, 0.3-0.9 part by weight of simethicone, 0.2-0.7 part by weight of calcium carbonate, 0.1-0.4 part by weight of titanium dioxide, 0.2-0.5 part by weight of cellulose, 0.05-0.15 part by weight of citric acid and 0.3-0.9 part by weight of polyvinyl alcohol, mixing, and then introducing into a double-layer co-extrusion casting machine for casting to obtain the coating.
Preferably, the drying in the step 1 is carried out until the water content of the blue algae is 10-15wt.%.
Preferably, the particle size of the micro powder in the step 1 is 80-100 meshes.
Preferably, the extractant is a mixed solution of tributyl phosphate and toluene, and the volume ratio of the tributyl phosphate to the toluene is 1: 1-1: 4.
preferably, the heating rate in step 4 is 5-10 deg.C/min.
Preferably, the cellulose is one of hydroxyethyl cellulose, hydroxypropyl cellulose and carboxymethyl cellulose.
Has the advantages that: the invention extracts the polyhydric alcohol from the blue algae, reacts with isocyanate, and then adds cellulose and polyvinyl alcohol to prepare the degradable packaging film, and the obtained film has good mechanical property and barrier property.
Detailed Description
Example 1
A method for preparing a degradable packaging film by using blue algae as a base material comprises the following steps:
step 1, cleaning and drying blue algae, and crushing the blue algae into micro powder;
step 2, adding 1 part of the micro powder obtained in the step 1 into 10 parts of water by weight, adding 0.05 part of liquid cellulase and 0.06 part of protease, heating to 40 ℃ for enzymolysis for 4 hours, inactivating enzyme, and filtering to obtain an enzymolysis solution;
step 3, adding the enzymatic hydrolysate obtained in the step 2 into an extracting agent with the volume 3 times that of the enzymatic hydrolysate for extraction, discarding an extraction phase, collecting a water phase, and performing reduced pressure concentration to obtain a concentrated solution;
and 4, adding 2 parts by weight of isocyanate into 30 parts by weight of the concentrated solution obtained in the step 3, heating to 50 ℃ for reaction for 4 hours, then adding 0.8 part by weight of glycerol, 0.5 part by weight of microcrystalline cellulose, 0.3 part by weight of simethicone, 0.2 part by weight of calcium carbonate, 0.1 part by weight of titanium dioxide, 0.2 part by weight of cellulose, 0.05 part by weight of citric acid and 0.3 part by weight of polyvinyl alcohol, mixing, and then introducing into a double-layer co-extrusion casting machine for casting to obtain the coating.
Wherein, the drying in the step 1 is carried out until the water content of the blue algae is 10wt.%, and the particle size of the micro-powder is 80-100 meshes.
The extractant is mixed solution of tributyl phosphate and toluene, and the volume ratio of the tributyl phosphate to the toluene is 1: 1.
in the step 4, the heating rate is 5 ℃/min, and the cellulose is hydroxyethyl cellulose.
The obtained degradable packaging film has the tensile strength of 15.7MPa, the elongation at break of 24.16 percent and the oxygen permeability coefficient of 2.48 multiplied by 10-16The coefficient of carbon dioxide transmission is 5.17 multiplied by 10-16Moisture permeability 248.
Example 2
A method for preparing a degradable packaging film by using blue algae as a base material comprises the following steps:
step 1, cleaning and drying blue algae, and crushing the blue algae into micro powder;
step 2, adding 1 part of the micro powder obtained in the step 1 into 10 parts of water by weight, adding 0.07 part of liquid cellulase and 0.08 part of protease, heating to 45 ℃ for enzymolysis for 4 hours, inactivating enzyme, and filtering to obtain an enzymolysis solution;
step 3, adding the enzymatic hydrolysate obtained in the step 2 into an extracting agent with the volume 4 times that of the enzymatic hydrolysate for extraction, discarding an extraction phase, collecting a water phase, and performing reduced pressure concentration to obtain a concentrated solution;
and 4, adding 4 parts by weight of isocyanate into 30 parts by weight of the concentrated solution obtained in the step 3, heating to 60 ℃ for reaction for 4 hours, then adding 1.1 parts by weight of glycerol, 0.6 part by weight of microcrystalline cellulose, 0.5 part by weight of simethicone, 0.4 part by weight of calcium carbonate, 0.2 part by weight of titanium dioxide, 0.3 part by weight of cellulose, 0.08 part by weight of citric acid and 0.5 part by weight of polyvinyl alcohol, mixing, and then introducing into a double-layer co-extrusion casting machine for casting to obtain the coating.
Wherein, the drying in the step 1 is carried out until the water content of the blue algae is 12wt.%, and the particle size of the micro-powder is 80-100 meshes.
The extractant is mixed solution of tributyl phosphate and toluene, and the volume ratio of the tributyl phosphate to the toluene is 1: 2.
in the step 4, the heating rate is 5 ℃/min, and the cellulose is hydroxypropyl cellulose.
The obtained degradable packaging film has the tensile strength of 17.3MPa, the elongation at break of 23.78 percent and the oxygen permeability coefficient of 2.02 multiplied by 10-16The coefficient of carbon dioxide transmission is 5.24 multiplied by 10-16And moisture permeability 252.
Example 3
A method for preparing a degradable packaging film by using blue algae as a base material comprises the following steps:
step 1, cleaning and drying blue algae, and crushing the blue algae into micro powder;
step 2, adding 1 part of the micro powder obtained in the step 1 into 10 parts of water by weight, adding 0.05 part of liquid cellulase and 0.1 part of protease, heating to 50 ℃ for enzymolysis for 2 hours, inactivating enzyme, and filtering to obtain an enzymolysis liquid;
step 3, adding the enzymatic hydrolysate obtained in the step 2 into an extracting agent with the volume 5 times that of the enzymatic hydrolysate for extraction, discarding an extraction phase, collecting a water phase, and performing reduced pressure concentration to obtain a concentrated solution;
and 4, adding 4 parts by weight of isocyanate into 30 parts by weight of the concentrated solution obtained in the step 3, heating to 60 ℃ for reaction for 2 hours, then adding 1.3 parts by weight of glycerol, 0.9 part by weight of microcrystalline cellulose, 0.7 part by weight of simethicone, 0.5 part by weight of calcium carbonate, 0.3 part by weight of titanium dioxide, 0.4 part by weight of cellulose, 0.12 part by weight of citric acid and 0.8 part by weight of polyvinyl alcohol, mixing, and then introducing into a double-layer co-extrusion casting machine for casting to obtain the coating.
Wherein, the drying in the step 1 is carried out until the water content of the blue algae is 15wt.%, and the particle size of the micro-powder is 80-100 meshes.
The extractant is mixed solution of tributyl phosphate and toluene, and the volume ratio of the tributyl phosphate to the toluene is 1: 3.
in the step 4, the heating rate is 5 ℃/min, and the cellulose is hydroxyethyl cellulose.
The obtained degradable packaging film has the tensile strength of 16.2MPa, the elongation at break of 25.12 percent and the oxygen permeability coefficient of 2.45 multiplied by 10-16The coefficient of carbon dioxide transmission is 5.12 multiplied by 10-16Moisture permeability 238.
Example 4
A method for preparing a degradable packaging film by using blue algae as a base material comprises the following steps:
step 1, cleaning and drying blue algae, and crushing the blue algae into micro powder;
step 2, adding 1 part of the micro powder obtained in the step 1 into 10 parts of water by weight, adding 0.1 part of liquid cellulase and 0.05 part of protease, heating to 50 ℃ for enzymolysis for 2 hours, inactivating enzyme, and filtering to obtain an enzymolysis solution;
step 3, adding the enzymatic hydrolysate obtained in the step 2 into an extracting agent with the volume 5 times that of the enzymatic hydrolysate for extraction, discarding an extraction phase, collecting a water phase, and performing reduced pressure concentration to obtain a concentrated solution;
and 4, adding 5 parts by weight of isocyanate into 30 parts by weight of the concentrated solution obtained in the step 3, heating to 70 ℃ for reaction for 2 hours, then adding 1.5 parts by weight of glycerol, 1.2 parts by weight of microcrystalline cellulose, 0.9 part by weight of simethicone, 0.27 part by weight of calcium carbonate, 0.4 part by weight of titanium dioxide, 0.5 part by weight of cellulose, 0.15 part by weight of citric acid and 0.9 part by weight of polyvinyl alcohol, mixing, and then introducing into a double-layer co-extrusion casting machine for casting to obtain the coating.
Wherein, the drying in the step 1 is carried out until the water content of the blue algae is 15wt.%, and the particle size of the micro-powder is 80-100 meshes.
The extractant is mixed solution of tributyl phosphate and toluene, and the volume ratio of the tributyl phosphate to the toluene is 1: 4.
in the step 4, the heating rate is 10 ℃/min, and the cellulose is hydroxyethyl cellulose.
The obtained degradable packaging film has the tensile strength of 14.8MPa, the elongation at break of 26.38 percent and the oxygen permeability coefficient of 2.65 multiplied by 10-16The coefficient of carbon dioxide transmission is 4.98 multiplied by 10-16And a moisture permeability 242.
Claims (5)
1. A method for preparing a degradable packaging film by using blue algae as a base material is characterized by comprising the following steps: the method comprises the following steps:
step 1, cleaning and drying blue algae, and crushing the blue algae into micro powder;
step 2, adding 1 part of the micro powder obtained in the step 1 into 10 parts of water by weight, adding 0.05-0.1 part of liquid cellulase and 0.05-0.1 part of protease, heating to 40-50 ℃ for enzymolysis for 2-4h, inactivating enzyme, and filtering to obtain an enzymolysis liquid;
and 3, adding the enzymatic hydrolysate obtained in the step 2 into an extracting agent with the volume of 3-5 times that of the enzymatic hydrolysate for extraction, wherein the extracting agent is a mixed solution of tributyl phosphate and toluene, and the volume ratio of the tributyl phosphate to the toluene is 1: 1-1: 4, discarding the extract phase, collecting the water phase, and concentrating under reduced pressure to obtain a concentrated solution;
and 4, adding 2-5 parts by weight of isocyanate into 30 parts by weight of the concentrated solution obtained in the step 3, heating to 50-70 ℃ for reaction for 2-4h, then adding 0.8-1.5 parts by weight of glycerol, 0.5-1.2 parts by weight of microcrystalline cellulose, 0.3-0.9 part by weight of simethicone, 0.2-0.7 part by weight of calcium carbonate, 0.1-0.4 part by weight of titanium dioxide, 0.2-0.5 part by weight of cellulose, 0.05-0.15 part by weight of citric acid and 0.3-0.9 part by weight of polyvinyl alcohol, mixing, and then introducing into a double-layer co-extrusion casting machine for casting to obtain the coating.
2. The method for preparing the degradable packaging film by using the blue algae as the base material according to claim 1, wherein the method comprises the following steps: and (3) drying in the step (1) until the water content of the blue algae is 10-15wt.%.
3. The method for preparing the degradable packaging film by using the blue algae as the base material according to claim 1, wherein the method comprises the following steps: in the step 1, the particle size of the micro powder is 80-100 meshes.
4. The method for preparing the degradable packaging film by using the blue algae as the base material according to claim 1, wherein the method comprises the following steps: the heating rate in step 4 is 5-10 ℃/min.
5. The method for preparing the degradable packaging film by using the blue algae as the base material according to claim 1, wherein the method comprises the following steps: the cellulose is one of hydroxyethyl cellulose, hydroxypropyl cellulose and carboxymethyl cellulose.
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| Publication number | Priority date | Publication date | Assignee | Title |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103694034A (en) * | 2013-12-02 | 2014-04-02 | 沃太能源南通有限公司 | Preparation method of compound fertilizer dedicated to ginkgo trees by using blue-green algae as base material |
| CN104163933A (en) * | 2013-05-17 | 2014-11-26 | 中国科学院海洋研究所 | Polymer film prepared based on freeze drying technology and method and application thereof |
| CN105885110A (en) * | 2016-05-27 | 2016-08-24 | 黑龙江八农垦大学 | Degradable packaging film material and preparing method and application thereof |
| CN105907067A (en) * | 2016-07-01 | 2016-08-31 | 铜陵方正塑业科技有限公司 | Chitosan cyanobacteria-based composite biofilm with high oxidation resistance and preparation method thereof |
| CN105968760A (en) * | 2016-07-01 | 2016-09-28 | 铜陵方正塑业科技有限公司 | Cyanobacteria-based biodegradable composite film material prepared by Cyanobacteria fermentation and preparation method thereof |
| CN105968758A (en) * | 2016-07-01 | 2016-09-28 | 铜陵方正塑业科技有限公司 | Liquid silica gel modified cyanophyta-based composite bioplastic and preparation method thereof |
| CN105968759A (en) * | 2016-07-01 | 2016-09-28 | 铜陵方正塑业科技有限公司 | Biomass nanometer cellulose modified blue-green algae based composite biological plastic and method for preparing same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4309528C2 (en) * | 1993-03-24 | 1998-05-20 | Doxa Gmbh | Casein film or film tube, process for their production and their use |
| CN1121452C (en) * | 2000-11-23 | 2003-09-17 | 许浩 | Formular and preparing process of environment protection type biodegradable dinner set |
| CN1230466C (en) * | 2003-02-25 | 2005-12-07 | 丁少忠 | Fully bio-degradable plastic master batch and preparing process thereof |
-
2017
- 2017-05-25 CN CN201710378667.9A patent/CN107083045B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163933A (en) * | 2013-05-17 | 2014-11-26 | 中国科学院海洋研究所 | Polymer film prepared based on freeze drying technology and method and application thereof |
| CN103694034A (en) * | 2013-12-02 | 2014-04-02 | 沃太能源南通有限公司 | Preparation method of compound fertilizer dedicated to ginkgo trees by using blue-green algae as base material |
| CN105885110A (en) * | 2016-05-27 | 2016-08-24 | 黑龙江八农垦大学 | Degradable packaging film material and preparing method and application thereof |
| CN105907067A (en) * | 2016-07-01 | 2016-08-31 | 铜陵方正塑业科技有限公司 | Chitosan cyanobacteria-based composite biofilm with high oxidation resistance and preparation method thereof |
| CN105968760A (en) * | 2016-07-01 | 2016-09-28 | 铜陵方正塑业科技有限公司 | Cyanobacteria-based biodegradable composite film material prepared by Cyanobacteria fermentation and preparation method thereof |
| CN105968758A (en) * | 2016-07-01 | 2016-09-28 | 铜陵方正塑业科技有限公司 | Liquid silica gel modified cyanophyta-based composite bioplastic and preparation method thereof |
| CN105968759A (en) * | 2016-07-01 | 2016-09-28 | 铜陵方正塑业科技有限公司 | Biomass nanometer cellulose modified blue-green algae based composite biological plastic and method for preparing same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023081848A1 (en) * | 2021-11-05 | 2023-05-11 | Sway Innovation Co. | Compostable seaweed-based compositions, and associated systems and methods |
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