CN110055822A - A kind of biodegradable coating material and preparation method thereof - Google Patents
A kind of biodegradable coating material and preparation method thereof Download PDFInfo
- Publication number
- CN110055822A CN110055822A CN201910409421.2A CN201910409421A CN110055822A CN 110055822 A CN110055822 A CN 110055822A CN 201910409421 A CN201910409421 A CN 201910409421A CN 110055822 A CN110055822 A CN 110055822A
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- Prior art keywords
- cellulose ether
- biodegradable
- chitosan
- water
- adjusting agent
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/34—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising cellulose or derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
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- Paints Or Removers (AREA)
Abstract
The present invention provides a kind of biodegradable coatings material and preparation method thereof, the biodegradable coatings material is mixed by following component: anionic cellulose ether, nonionic cellulose ether, chitosan, pH adjusting agent and water, the wherein weight percent of each component are as follows: anionic cellulose ether 1%~2.25%, nonionic cellulose ether 0.5%~2%, chitosan 1%~2.25%, pH adjusting agent and water totally 93.5%~96%.The preparation method technique very simple of biodegradable coating material of the invention, it is easy to grasp system, low production cost, by the coating material through simply sprayed or roller coating after, it can be obtained by biodegradable packing film, it is easy to industrialized production and there is good economic benefit to substitute the petroleum derivation compound that current packaging material is applied above to mitigate the environmental pressure of the earth.
Description
Technical field
The present invention relates to preparing, one kind is biodegradable, has good oil resistivity, salt water resistance and good barrier property
The biodegradable coating material of energy.
Technical background
A large amount of uses of Phthalates, not only largely consume petroleum resource, and also gives earth environment and city
Solid waste processing brings pressure, and it is widely known to Phthalates to have become in China's " white pollution " word
Caused by environmental pollution synonym.
In some cases, plastics are almost used as packing container, such as beverage bottle and other food containers plastic laminations
Low density polyethylene (LDPE) (LDPE) laminate on plate, especially cardboard is commonly used in Food processing and packaging.Cardboard is used as tying
Structure material and printing material, and laminate plastic layer provides liquid barrier performance needed for preventing cardboard aquation and failure.With
Biodegradable material substitutes this plastic laminates, makes entirely to pack compost, can mitigate the difficult to degrade of non-returnable container
Problem and significant impact thus is led to the problem of to our environment.In order to solve this critical issue, developing one kind biological can drop
The new material of solution is particularly important.
The whole world advocate thriftiness energetically resource, protect the circular economy policy of environment under, cellulose, chitosan etc. be nontoxic,
It is free of contamination can natural degradation material come into being.
Cellulose and chitosan have unique biological physicochemical property, make it in food fresh keeping, medical domain, environmental treatment
There is extensive uses with chemical industry etc..Cellulose is that a kind of most wide, content is most polysaccharide, chitosan are distributed in nature
It is chitin through deacetylated obtained product, there is good safety, biocompatibility, degradability and film forming, be
One of preferred packaging material for food generally acknowledged at present.
Summary of the invention
In view of described in background technique, the present invention it is necessary to provide it is a kind of it is biodegradable, there is good oil resistant, salt water resistance
With the biodegradable coating material of good barrier property, to substitute the petroleum derivation that current packaging material is applied above
Object is closed, the environmental pressure of the earth is mitigated.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of biodegradable coatings material, is mixed by following component: anionic cellulose ether, non-ionic fiber
Plain ether, chitosan, pH adjusting agent and water, the wherein weight percent of each component are as follows: anionic cellulose ether 1%~
2.25%, nonionic cellulose ether 0.5%~2%, chitosan 1%~2.25%, pH adjusting agent and water 93.5%~96%.
In a preferred embodiment of that invention, the anionic cellulose ether is carboxymethyl cellulose or polyanionic
Cellulose ether.
In a preferred embodiment of that invention, the nonionic cellulose ether is that hydroxypropyl methyl cellulose or ethoxy are fine
Dimension element.
In a preferred embodiment of that invention, the chitosan is acid-soluble chitosan.
In a preferred embodiment of that invention, the pH adjusting agent and water are respectively formic acid and deionized water.
The present invention also provides a kind of preparation methods of above-mentioned biodegradable coating material, comprising the following steps:
S1, at room temperature, according to parts by weight than weighing a certain amount of anionic cellulose ether, nonionic cellulose ether
And chitosan；
S2, at room temperature, the pH value of solution is adjusted by the way that pH adjusting agent is added in water, and obtaining pH value is 3~5
Aqueous solution weighs the aqueous solution of constant weight number ratio, for use；
S3, anionic cellulose ether load weighted in S1, nonionic cellulose ether and chitosan are added in S2 and are weighed
In the aqueous solution that good pH adjusting agent and water is formed, stirs evenly, obtain mixed solution；
S4, dispersion zirconium pearl is added in the mixed solution stirred evenly, is dispersed with high speed disperser, it will be scattered mixed
It closes solution to be filtered, removes zirconium pearl, obtain biodegradable coating material.
In a preferred embodiment of that invention, the S4 zirconium pearl is yttrium stable zirconium oxide pearl.
In the present invention, which is sprayed or roller coating is on paper substrates, so that it may obtain biological to drop
Solve packing film, according to GB 31604.8-2016 and GB/T 21529-2008, to obtained biodegradable packing film into
Row oil resistant, salt water resistance and barrier property measurement, display meet biodegradable films national standard, illustrate the present invention obtain can
Biodegradable packing film has excellent oil resistant, salt water resistance and good barrier property.
Compared with prior art, the present invention having the following beneficial effects:
In biodegradable coating material of the present invention, main component is anionic cellulose ether, nonionic cellulose ether
And chitosan, free amine group is had in chitosan molecule, is in cationic property in an acidic solution easily at salt, and anion is fine
Anionic nature is presented in dimension element in the solution；In the solution, with chitosan Electrostatic complexation can occur for anionic cellulose, so that
The viscosity of solution substantially reduces, and coating material is sprayed for this or roller coating is highly beneficial on paper substrates；Nonionic is fine
Tieing up element is to have good thermoplastic, has excellent film forming, forms a film very tough and tensile, glossiness is good, and elasticity is filled
Point；Therefore, the oil resistant salt tolerant and barrier property of coating can be increased by non-ionic cellulose being added in coating material.
In addition, the preparation method technique very simple of biodegradable coating material of the invention, is easy to grasp system, is produced into
This is cheap, by the coating material simply sprayed or roller coating after, so that it may obtain biodegradable packing film, be easy to work
Industry metaplasia produces and has good economic benefit, to substitute the petroleum derivation compound that current packaging material is applied above, subtracts
The lightly environmental pressure of ball.
Specific embodiment
It below will invention is further described in detail by specific embodiment.Obviously, the embodiment described is only
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1:
The present embodiment provides a kind of biodegradable coating material, the wherein weight part ratio of each component are as follows: anion
Fiber type element ether 2.25%, nonionic cellulose ether 0.5%, chitosan 2.25%, pH adjusting agent and water 95.0%.
Wherein, the anionic cellulose ether is sodium carboxymethylcellulose, and the nonionic cellulose ether is hydroxyl
Propyl methocel, the chitosan are the molten chitosan of acid, and the pH adjusting agent and water are by formic acid and deionized water
Composition.
The preparation method of above-mentioned biodegradable coating material, comprising the following steps:
At room temperature, the acid for weighing the sodium carboxymethylcellulose of 2.25g, 0.5g hydroxypropyl methyl cellulose and 2.25g is molten
Chitosan；By the way that the pH value of food-grade first acid-conditioning solution is added in deionized water, make the pH value 4.5 of aqueous solution, with burning
Cup weighs the aqueous solution 95.0g that obtained pH is 4.5, for use；Load weighted sodium carboxymethylcellulose, hydroxypropyl methyl is fine
Dimension element and the molten chitosan of acid are added in the aqueous solution that load weighted pH is 4.5, are stirred evenly with glass bar, obtain mixing molten
Liquid；Yttrium stable zirconium oxide pearl is added in the mixed solution stirred evenly, so that zirconium pearl is at least paved with beaker bottom, uses high speed dispersion
Machine disperses 40 minutes under 4500 revs/min of revolving speed, and scattered mixed solution is removed, and obtains biodegradable coating material
Material.
Biodegradable coating material based on the present embodiment is sprayed at after drying on paper disc, according to GB
31604.8-2016 carries out oil resistivity and salt tolerance detection, carries out barrier property detection according to GB/T 21529-2008, the cardboard is resistance to
Oily salt resistant character reaches gross migration <=10mg/dm2 and barrier property reaches 10.739g/ (m2 ﹒ is for 24 hours) left and right, shows the material
Material has excellent oil resistant salt resistant character and good barrier property.
Embodiment 2:
The present embodiment provides another biodegradable coating material, the wherein weight part ratio of each component are as follows: yin from
Subtype cellulose ether 2.0%, nonionic cellulose ether 1.0%, chitosan 1.50%, pH adjusting agent and water 95.5%.
Wherein, the polyanionic cellulose ether is high adhesive aggregation anionic cellulose ether, and the nonionic is fine
Tieing up plain ether is hydroxyethyl cellulose, and the chitosan is the molten chitosan of acid, and the pH adjusting agent and water are added by hydrochloric acid
Ionized water composition.
The preparation method of the biodegradable coating material of the present embodiment, comprising the following steps:
At room temperature, the high adhesive aggregation anionic cellulose ether of 2.0g, the acid of 1.0g hydroxyethyl cellulose and 1.5g are weighed
Molten chitosan；By the way that the pH value of hydrochloric acid acid-conditioning solution is added in deionized water, the pH value of deionized water solution is 3.0, is used
Beaker weighs the aqueous solution 95.5g that pH value is 3.0, for use；Load weighted high adhesive aggregation anionic cellulose ether, ethoxy is fine
Dimension element and the molten chitosan of acid are added in the aqueous solution that load weighted pH value is 3.0, are stirred evenly with glass bar, obtain mixing molten
Liquid；Yttrium stable zirconium oxide pearl is added in the mixed solution stirred evenly, so that zirconium pearl is at least paved with beaker bottom, uses high speed dispersion
Machine disperses 100 minutes under 3000 revs/min of revolving speed, and scattered mixed solution is removed, and obtains biodegradable coating
Material.
Biodegradable coating material based on the present embodiment is sprayed at after drying on paper disc, according to GB
31604.8-2016 carries out oil resistivity and salt tolerance detection, carries out barrier property detection according to GB/T 21529-2008, the cardboard is resistance to
Oily salt resistant character reaches gross migration <=10mg/dm2 and barrier property reaches 10.739g/ (m2 ﹒ is for 24 hours), shows that the material has
There are excellent oil resistant salt resistant character and good barrier property.
In biodegradable coating material of the present invention, main component anionic cellulose ether, nonionic cellulose ether, shell
Glycan can be all decomposed by the microorganisms under given conditions, belong to Wholly-degradable biomaterial.In addition, anionic fiber
Plain ether, nonionic cellulose ether, chitosan and pH adjusting agent are combined, and can be interacted, and have certain association
Same-action, so that biodegradable coating material of the invention embodies excellent oil resistant, salt water resistance and good barrier property,
And maintain the preferable transparency, excellent combination property
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain similarly includes in scope of patent protection of the invention.
Claims (8)
1. a kind of biodegradable coatings material, which is characterized in that mixed by following component: anionic cellulose ether,
Nonionic cellulose ether, chitosan, pH adjusting agent and water, the wherein weight percent of each component are as follows: anionic cellulose
Ether 1%~2.25%, nonionic cellulose ether 0.5%~2%, chitosan 1%~2.25%, pH adjusting agent and water are total
93.5%~96%.
2. biodegradable coatings material according to claim 1, which is characterized in that the anionic cellulose ether is
Carboxymethyl cellulose or polyanionic cellulose ether.
3. biodegradable coatings material according to claim 1, which is characterized in that the nonionic cellulose ether is hydroxyl
Propyl methocel or hydroxyethyl cellulose.
4. biodegradable coatings material according to claim 1, which is characterized in that the chitosan is poly- for acid-soluble shell
Sugar.
5. biodegradable coatings material according to claim 1, which is characterized in that the pH adjusting agent and water difference
For formic acid and deionized water.
6. a kind of preparation method of any biodegradable coating material of claim 1 to 5, which is characterized in that including
Following steps:
S1, at room temperature, weighs a certain amount of anionic cellulose ether, nonionic cellulose ether and shell according to weight percent
Glycan；
S2, at room temperature, the pH value of solution is adjusted by the way that pH adjusting agent is added in water, obtain pH value be 3~5 it is water-soluble
Liquid weighs the aqueous solution of constant weight percentage, for use；
S3, by anionic cellulose ether load weighted in S1, nonionic cellulose ether and chitosan are added load weighted in S2
In the aqueous solution that pH adjusting agent and water are formed, stirs evenly, obtain mixed solution；
S4, dispersion zirconium pearl is added in the mixed solution stirred evenly, is dispersed with high speed disperser, scattered mixing is molten
Liquid is filtered, and is removed zirconium pearl, is obtained biodegradable coating material.
7. preparation method according to claim 6, which is characterized in that the zirconium pearl is yttrium stable zirconium oxide pearl.
8. preparation method according to claim 6, which is characterized in that in S4, the revolving speed of high speed disperser is 2000~
6000 revs/min, required jitter time is 20~300 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409421.2A CN110055822A (en) | 2019-05-15 | 2019-05-15 | A kind of biodegradable coating material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409421.2A CN110055822A (en) | 2019-05-15 | 2019-05-15 | A kind of biodegradable coating material and preparation method thereof |
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| CN110055822A true CN110055822A (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910409421.2A Pending CN110055822A (en) | 2019-05-15 | 2019-05-15 | A kind of biodegradable coating material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115776946A (en) * | 2020-06-30 | 2023-03-10 | 斯道拉恩索公司 | Barrier coatings for paper and paperboard |
| EP4162103A4 (en) * | 2020-06-04 | 2023-12-06 | Essity Hygiene and Health Aktiebolag | A method for consolidating a fibrous material with a bio-based binder polymer, a consolidated fibrous material and an aqueous binder solution |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4162103A4 (en) * | 2020-06-04 | 2023-12-06 | Essity Hygiene and Health Aktiebolag | A method for consolidating a fibrous material with a bio-based binder polymer, a consolidated fibrous material and an aqueous binder solution |
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