CN107083045A - A kind of method that degradable film for package is prepared by base-material of blue-green algae - Google Patents
A kind of method that degradable film for package is prepared by base-material of blue-green algae Download PDFInfo
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- CN107083045A CN107083045A CN201710378667.9A CN201710378667A CN107083045A CN 107083045 A CN107083045 A CN 107083045A CN 201710378667 A CN201710378667 A CN 201710378667A CN 107083045 A CN107083045 A CN 107083045A
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- 241000192700 Cyanobacteria Species 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 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
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 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
- 229920002678 cellulose Polymers 0.000 claims abstract description 14
- 239000001913 cellulose Substances 0.000 claims abstract description 14
- 235000010980 cellulose Nutrition 0.000 claims abstract description 14
- 239000012141 concentrate Substances 0.000 claims abstract description 13
- 239000003595 mist Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 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
- 239000012071 phase 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
- 239000008346 aqueous phase Substances 0.000 claims abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 7
- 229940106157 cellulase Drugs 0.000 claims abstract description 7
- 238000007766 curtain coating Methods 0.000 claims abstract description 7
- 229940008099 dimethicone Drugs 0.000 claims abstract description 7
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims abstract description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 7
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 235000011187 glycerol Nutrition 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
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 7
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 36
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical group CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 12
- 108090000790 Enzymes Proteins 0.000 claims description 6
- 102000004190 Enzymes Human genes 0.000 claims description 6
- 229940088598 enzyme Drugs 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 5
- 239000004354 Hydroxyethyl cellulose Substances 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
- 238000012856 packing Methods 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract description 2
- 239000000284 extract Substances 0.000 abstract description 2
- 150000005846 sugar alcohols Polymers 0.000 abstract description 2
- 108091005804 Peptidases Proteins 0.000 abstract 1
- 239000004365 Protease Substances 0.000 abstract 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 abstract 1
- 229960003563 calcium carbonate Drugs 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- 235000015165 citric acid Nutrition 0.000 abstract 1
- 229960005150 glycerol Drugs 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 abstract 1
- 229960005196 titanium dioxide Drugs 0.000 abstract 1
- 235000010215 titanium dioxide Nutrition 0.000 abstract 1
- 239000010408 film Substances 0.000 description 16
- 229920003023 plastic Polymers 0.000 description 13
- 239000004033 plastic Substances 0.000 description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 7
- 235000013305 food Nutrition 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000005022 packaging material Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000009738 saturating Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010816 packaging waste Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- -1 polybag Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Mechanical Engineering (AREA)
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Wrappers (AREA)
- Packages (AREA)
Abstract
The invention provides a kind of method that degradable film for package is prepared by base-material of blue-green algae, first take blue-green algae to clean, dry, be broken into after micro mist and add in water, add liquid cellulase and protease is digested；Enzymolysis liquid is added in extractant again and extracted, abandon extraction phase, aqueous phase is collected, it is concentrated under reduced pressure, then isocyanates is added in concentrate, heating response adds glycerine, microcrystalline cellulose, dimethicone, calcium carbonate, titanium dioxide, cellulose, citric acid and polyvinyl alcohol, double-layer coextrusion casting machine curtain coating is imported after mixing, is produced.The present invention extracts obtained polyalcohol from blue-green algae, is reacted with isocyanates, adds cellulose and polyvinyl alcohol, is made degradable packing film, and gained film has good mechanical performance and barrier property.
Description
Technical field
The invention belongs to field of packaging material, and in particular to one kind prepares degradable film for package by base-material of blue-green algae
Method.
Background technology
Plastics are a kind of good high polymer materials of plasticity, use it for packaging field, with traditional packaging material
（Paper, metal, glass etc.）Compare, plastic package material has its unique performance.Each based packaging material being made of plastics, is such as moulded
Expect film, polybag, Plastic Drum and chest, plastic bottle and tank and compound package material etc., be widely used in food packaging applications,
And market demand is in rising trend year by year.Why plastic package material can be widely used in packaging for foodstuff, be because
There is its unique good characteristic for plastics package, such as excellent physical and mechanical property, good chemical stability, light weight is processed into
Type is good, good appearance, easily coloring etc..But, the safe and healthy performance of some plastic materials is poor, while its package waste
Thing can produce large effect to environment again, so as to have impact on use of the plastic package material in some food packaging applications.But
Continuous release and iteration with novel plastic material are updated, and application of the plastic package material in field of food is wrapped compared to other
Package material is still occupied an leading position.
With the continuous improvement constantly weeded out the old and bring forth the new with process technology of plastic film packaging material, food plastic packaging is thin
Film has goed deep into the life of people, and what is come one after the other is the negative effect and cause that plastics packed discarded object is brought to environment
Harm is increasing.Nowadays, with the continuous enhancing of people's environmental protection consciousness, packaging for foodstuff there has also been higher and higher
It is required that, on the one hand the requirement to the packaging food fresh keeping phase is increasingly longer, is on the other hand also desirable that packaging waste can be voluntarily
Degraded, will not generation environment pollution, it is therefore more and more to the demand of green package.Want to obtain that performance is more excellent and environment
Friendly food product packing film, it is necessary to constantly improve its process technology and select the material of high-quality to prepare.
The content of the invention
The technical problem of solution：By base-material of blue-green algae degradable film for package is prepared it is an object of the invention to provide a kind of
Method.
Technical scheme：A kind of method that degradable film for package is prepared by base-material of blue-green algae, comprises the following steps：
Step 1, take blue-green algae to clean, dry, be broken into micro mist；
Step 2, in parts by weight, by step 1 gained micro mist 1 part add in 10 parts of water, add liquid cellulase 0.05-
0.1 part and .05-0.1 parts of proteinase-10, are heated to 40-50 DEG C of enzymolysis 2-4h, the enzyme that goes out, filtering obtain enzymolysis liquid；
Step 3, step 2 gained enzymolysis liquid is added to and extracted in the extractant of 3-5 times of volume, abandoned extraction phase, aqueous phase is received
Collection, is concentrated under reduced pressure, obtains concentrate；
Step 4, in parts by weight, 2-5 part of isocyanates is added in 30 parts of step 3 gained concentrate, 50-70 DEG C is heated to instead
2-4h is answered, 0.8-1.5 parts of glycerine, 0.5-1.2 parts of microcrystalline cellulose, 0.3-0.9 parts of dimethicone, calcium carbonate is then added
0.2-0.7 parts, 0.1-0.4 parts of titanium dioxide, 0.2-0.5 parts of cellulose, 0.05-0.15 parts of citric acid and polyvinyl alcohol 0.3-
0.9 part, double-layer coextrusion casting machine curtain coating is imported after mixing, is produced.
Preferably, it is 10-15wt.%. to be dried in step 1 to blue-green algae water content
Preferably, in step 1 grain size of micropowder in 80-100 mesh.
Preferably, the extractant is tributyl phosphate and toluene mixture liquid, and the volume ratio of tributyl phosphate and toluene is
1：1-1：4.
Preferably, the rate of heat addition is 5-10 DEG C/min in step 4.
Preferably, the cellulose is one kind in hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose.
Beneficial effect：The present invention extracts obtained polyalcohol from blue-green algae, is reacted with isocyanates, adds fibre
Dimension element and polyvinyl alcohol, are made degradable packing film, and gained film has good mechanical performance and barrier property.
Embodiment
Embodiment 1
A kind of method that degradable film for package is prepared by base-material of blue-green algae, comprises the following steps：
Step 1, take blue-green algae to clean, dry, be broken into micro mist；
Step 2, in parts by weight, by step 1 gained micro mist 1 part add in 10 parts of water, add 0.05 part of liquid cellulase
With .06 parts of proteinase-10,40 DEG C of enzymolysis 4h are heated to, the enzyme that goes out, filtering obtain enzymolysis liquid；
Step 3, step 2 gained enzymolysis liquid is added to and extracted in the extractant of 3 times of volumes, abandoned extraction phase, aqueous phase is collected,
It is concentrated under reduced pressure, obtains concentrate；
Step 4, in parts by weight, 2 parts of isocyanates is added in 30 parts of step 3 gained concentrate, 50 DEG C of reaction 4h are heated to,
Then add 0.8 part of glycerine, 0.5 part of microcrystalline cellulose, 0.3 part of dimethicone, 0.2 part of calcium carbonate, 0.1 part of titanium dioxide,
0.3 part of 0.2 part of cellulose, 0.05 part of citric acid and polyvinyl alcohol, import double-layer coextrusion casting machine curtain coating, produce after mixing.
Wherein, it is 10wt.% to be dried in step 1 to blue-green algae water content, and grain size of micropowder is in 80-100 mesh.
The extractant is tributyl phosphate and toluene mixture liquid, and the volume ratio of tributyl phosphate and toluene is 1：1.
The rate of heat addition is 5 DEG C/min in step 4, and the cellulose is hydroxyethyl cellulose.
Gained degradable film for package tensile strength is 15.7MPa, and elongation at break is 24.16%, and oxygen permeability coefficient is
2.48×10-16, saturating carbon dioxide coefficient is 5.17 × 10-16, vapor transfer rate 248.
Embodiment 2
A kind of method that degradable film for package is prepared by base-material of blue-green algae, comprises the following steps：
Step 1, take blue-green algae to clean, dry, be broken into micro mist；
Step 2, in parts by weight, by step 1 gained micro mist 1 part add in 10 parts of water, add 0.07 part of liquid cellulase
With .08 parts of proteinase-10,45 DEG C of enzymolysis 4h are heated to, the enzyme that goes out, filtering obtain enzymolysis liquid；
Step 3, step 2 gained enzymolysis liquid is added to and extracted in the extractant of 4 times of volumes, abandoned extraction phase, aqueous phase is collected,
It is concentrated under reduced pressure, obtains concentrate；
Step 4, in parts by weight, 4 parts of isocyanates is added in 30 parts of step 3 gained concentrate, 60 DEG C of reaction 4h are heated to,
Then add 1.1 parts of glycerine, 0.6 part of microcrystalline cellulose, 0.5 part of dimethicone, 0.4 part of calcium carbonate, 0.2 part of titanium dioxide,
0.5 part of 0.3 part of cellulose, 0.08 part of citric acid and polyvinyl alcohol, import double-layer coextrusion casting machine curtain coating, produce after mixing.
Wherein, it is 12wt.% to be dried in step 1 to blue-green algae water content, and grain size of micropowder is in 80-100 mesh.
The extractant is tributyl phosphate and toluene mixture liquid, and the volume ratio of tributyl phosphate and toluene is 1：2.
The rate of heat addition is 5 DEG C/min in step 4, and the cellulose is hydroxypropyl cellulose.
Gained degradable film for package tensile strength is 17.3MPa, and elongation at break is 23.78%, and oxygen permeability coefficient is
2.02×10-16, saturating carbon dioxide coefficient is 5.24 × 10-16, vapor transfer rate 252.
Embodiment 3
A kind of method that degradable film for package is prepared by base-material of blue-green algae, comprises the following steps：
Step 1, take blue-green algae to clean, dry, be broken into micro mist；
Step 2, in parts by weight, by step 1 gained micro mist 1 part add in 10 parts of water, add 0.05 part of liquid cellulase
With .1 parts of proteinase-10,50 DEG C of enzymolysis 2h are heated to, the enzyme that goes out, filtering obtain enzymolysis liquid；
Step 3, step 2 gained enzymolysis liquid is added to and extracted in the extractant of 5 times of volumes, abandoned extraction phase, aqueous phase is collected,
It is concentrated under reduced pressure, obtains concentrate；
Step 4, in parts by weight, 4 parts of isocyanates is added in 30 parts of step 3 gained concentrate, 60 DEG C of reaction 2h are heated to,
Then add 1.3 parts of glycerine, 0.9 part of microcrystalline cellulose, 0.7 part of dimethicone, 0.5 part of calcium carbonate, 0.3 part of titanium dioxide,
0.8 part of 0.4 part of cellulose, 0.12 part of citric acid and polyvinyl alcohol, import double-layer coextrusion casting machine curtain coating, produce after mixing.
Wherein, it is 15wt.% to be dried in step 1 to blue-green algae water content, and grain size of micropowder is in 80-100 mesh.
The extractant is tributyl phosphate and toluene mixture liquid, and the volume ratio of tributyl phosphate and toluene is 1：3.
The rate of heat addition is 5 DEG C/min in step 4, and the cellulose is hydroxyethyl cellulose.
Gained degradable film for package tensile strength is 16.2MPa, and elongation at break is 25.12%, and oxygen permeability coefficient is
2.45×10-16, saturating carbon dioxide coefficient is 5.12 × 10-16, vapor transfer rate 238.
Embodiment 4
A kind of method that degradable film for package is prepared by base-material of blue-green algae, comprises the following steps：
Step 1, take blue-green algae to clean, dry, be broken into micro mist；
Step 2, in parts by weight, by step 1 gained micro mist 1 part add in 10 parts of water, add 0.1 part of liquid cellulase and
.05 parts of proteinase-10, is heated to 50 DEG C of enzymolysis 2h, the enzyme that goes out, filtering obtain enzymolysis liquid；
Step 3, step 2 gained enzymolysis liquid is added to and extracted in the extractant of 5 times of volumes, abandoned extraction phase, aqueous phase is collected,
It is concentrated under reduced pressure, obtains concentrate；
Step 4, in parts by weight, 5 parts of isocyanates is added in 30 parts of step 3 gained concentrate, 70 DEG C of reaction 2h are heated to,
Then add 1.5 parts of glycerine, 1.2 parts of microcrystalline cellulose, 0.9 part of dimethicone, 0.27 part of calcium carbonate, 0.4 part of titanium dioxide,
0.9 part of 0.5 part of cellulose, 0.15 part of citric acid and polyvinyl alcohol, import double-layer coextrusion casting machine curtain coating, produce after mixing.
Wherein, it is 15wt.% to be dried in step 1 to blue-green algae water content, and grain size of micropowder is in 80-100 mesh.
The extractant is tributyl phosphate and toluene mixture liquid, and the volume ratio of tributyl phosphate and toluene is 1：4.
The rate of heat addition is 10 DEG C/min in step 4, and the cellulose is hydroxyethyl cellulose.
Gained degradable film for package tensile strength is 14.8MPa, and elongation at break is 26.38%, and oxygen permeability coefficient is
2.65×10-16, saturating carbon dioxide coefficient is 4.98 × 10-16, vapor transfer rate 242.
Claims (6)
1. a kind of method that degradable film for package is prepared by base-material of blue-green algae, it is characterised in that：Comprise the following steps：
Step 1, take blue-green algae to clean, dry, be broken into micro mist；
Step 2, in parts by weight, by step 1 gained micro mist 1 part add in 10 parts of water, add liquid cellulase 0.05-
0.1 part and .05-0.1 parts of proteinase-10, are heated to 40-50 DEG C of enzymolysis 2-4h, the enzyme that goes out, filtering obtain enzymolysis liquid；
Step 3, step 2 gained enzymolysis liquid is added to and extracted in the extractant of 3-5 times of volume, abandoned extraction phase, aqueous phase is received
Collection, is concentrated under reduced pressure, obtains concentrate；
Step 4, in parts by weight, 2-5 part of isocyanates is added in 30 parts of step 3 gained concentrate, 50-70 DEG C is heated to instead
2-4h is answered, 0.8-1.5 parts of glycerine, 0.5-1.2 parts of microcrystalline cellulose, 0.3-0.9 parts of dimethicone, calcium carbonate is then added
0.2-0.7 parts, 0.1-0.4 parts of titanium dioxide, 0.2-0.5 parts of cellulose, 0.05-0.15 parts of citric acid and polyvinyl alcohol 0.3-
0.9 part, double-layer coextrusion casting machine curtain coating is imported after mixing, is produced.
2. the method according to claim 1 that degradable film for package is prepared by base-material of blue-green algae, it is characterised in that：Step
It is 10-15wt.% to be dried in 1 to blue-green algae water content.
3. the method according to claim 1 that degradable film for package is prepared by base-material of blue-green algae, it is characterised in that：Step
Grain size of micropowder is in 80-100 mesh in 1.
4. the method according to claim 1 that degradable film for package is prepared by base-material of blue-green algae, it is characterised in that：It is described
Extractant is tributyl phosphate and toluene mixture liquid, and the volume ratio of tributyl phosphate and toluene is 1：1-1：4.
5. the method according to claim 1 that degradable film for package is prepared by base-material of blue-green algae, it is characterised in that：Step
The rate of heat addition is 5-10 DEG C/min in 4.
6. the method according to claim 1 that degradable film for package is prepared by base-material of blue-green algae, it is characterised in that：It is described
Cellulose is one kind in hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose.
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| CN107083045B (en) | 2020-01-17 |
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Effective date of registration: 20240331 Address after: 344000 Yuanshangang Economic Development Zone, Dongxiang District, Fuzhou City, Jiangxi Province Patentee after: Jiangxi Membrane New Material Technology Co.,Ltd. Country or region after: China Address before: 212400 Jurong Xingwu Packaging Co., Ltd., 2 km west of chenwuji Town, Jurong City, Zhenjiang City, Jiangsu Province Patentee before: JURONG XINGWU PACKAGING Co.,Ltd. Country or region before: China |