CN112796160A - Preparation method of chelated copper ion polymer and antibacterial barrier composite paper/paperboard thereof - Google Patents
Preparation method of chelated copper ion polymer and antibacterial barrier composite paper/paperboard thereof Download PDFInfo
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- CN112796160A CN112796160A CN202110159337.7A CN202110159337A CN112796160A CN 112796160 A CN112796160 A CN 112796160A CN 202110159337 A CN202110159337 A CN 202110159337A CN 112796160 A CN112796160 A CN 112796160A
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- copper ion
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- polyethyleneimine
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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
- 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
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
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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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
Abstract
The invention provides a preparation method of a chelated copper ion polymer and antibacterial barrier composite paper thereof, wherein the preparation method of the chelated copper ion polymer comprises the steps of dissolving polyethyleneimine in ethanol to prepare polyethyleneimine ethanol solution, adding copper sulfate in the polyethyleneimine ethanol solution to prepare chelated copper ion polyethyleneimine ethanol solution, and then adding polyvinyl butyral to perform grafting reaction to prepare chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer; the prepared chelating copper ion polyethyleneimine grafted polyvinyl butyral polymer, namely the chelating copper ion polymer, is subjected to film spraying on the surface of base paper/paperboard in a film extruding and spraying manner to form a compact chelating copper ion polymer film, so that the composite paper/paperboard which has broad-spectrum antibacterial/bacteriostatic performance, good waterproof performance and thermal stability and high binding force with paper/paperboard can be prepared, a novel and cheap packaging material is provided for the packaging industry, and the development of the packaging industry is promoted.
Description
Technical Field
The invention relates to a preparation method of a chelated copper ion polymer and antibacterial barrier composite paper thereof, and belongs to the technical field of production and preparation of antibacterial barrier composite paper/paperboard.
Background
With the development of commodity economy, the commodity packaging paper and the packaging paperboard thereof are used in larger and wider quantities and application ranges.
The existing packaging paper and the packaging paper board thereof have a large part, such as the packaging paper and the packaging paper board like corrugated paper and corrugated board, which have high air permeability and moisture permeability, large fiber void ratio and strong moisture absorption, because the air permeability and the moisture permeability of the packaging paper or the paper board are high, bacteria are easily adsorbed, and because the fiber void ratio of the paper or the paper board is large, external bacteria can enter the inside of a paper box or a paper box made of the packaging paper or the paper board through the void, thereby polluting objects in the paper box or the paper box; in addition, because the paper box or paper box made of the packaging paper or paper board is easy to absorb moisture and is beneficial to the growth of bacteria, the paper box or paper box made of the packaging paper or paper board is easy to mildew, rot and the like in a humid environment or in a yellow plum season, and articles packaged in the box can be possibly affected.
In order to overcome the defects, in the prior art, a method is adopted to coat synthetic resin on packaging paper or a packaging paperboard to prepare composite paper or composite paperboard, and then the composite paper or the composite paperboard is used as paper box or paper box surface paper to prepare a paper box or a paper box; in addition, an antibacterial agent can be added into the synthetic resin, and can effectively kill bacteria attached to the surface of the packing paper or the packing paperboard and avoid the corruption of the paper box or the paper box caused by the propagation of the bacteria; in addition, the synthetic resin film has good water resistance and does not absorb water, and after the synthetic resin film is coated on the packaging paper and the packaging paperboard, water molecules cannot enter the packaging paper and the packaging paperboard, so that the carton or the paper box can have good strength even in a humid environment, and articles in the carton or the paper box can be protected.
In the prior art, two methods are mainly used for manufacturing antibacterial packaging paper and packaging paperboard with antibacterial capacity, wherein:
one method is to prepare antibacterial paper by adding antibacterial agent in the paper making process, such as the invention patent application of an antibacterial paper production process (application number: 201810267079.2), and adopts the method that a series of plant extracting agents are added into white water for paper making to achieve the antibacterial purpose; the invention patent of 'production process of antibacterial paper and antibacterial paper' (application number: 201310020994.9) is to add organic matters such as nano cellulose quaternary ammonium salt and the like into paper pulp as an antibacterial agent to prepare antibacterial packaging paper and packaging paper board;
the other method is that the base paper is post-processed to form antibacterial packaging paper and packaging paperboard, and the method can be divided into two forms, one is that the invention patent of antibacterial paper (application number: 201210497349.1) comprising a paper core tube and roll paper wound on the paper core tube applies volatile antibacterial substance on the paper core tube, so that the volatile substance is added into the paper tube of the base paper and slowly volatilizes to the base paper to realize the antibacterial purpose; secondly, as the invention patent application of an antibacterial paperboard coating and a preparation method thereof (application number: 201711187963.7), the invention is characterized in that a solution mixed with a plurality of antibacterial agents is coated on base paper in a coating mode, and the antibacterial paper is obtained after drying; and the invention patent of antibacterial self-adhesive laminating paper (application number: 201910094959.9) adopts a laminating mode to mix and laminate antibacterial agent and laminating resin on base paper to form antibacterial packaging paper.
The two methods for preparing the antibacterial paper have the main problems that:
the antibacterial paper is prepared by adding the antibacterial agent in the papermaking link, the method is only suitable for being carried out in a paper mill, is matched with large-batch production, is not suitable for the production of small-batch, multi-specification and multi-variety antibacterial paper, and the binding force of the paper is reduced because the antibacterial agent is added into the paper pulp to influence the strength of the paper; in addition, the paper does not solve the problem of water resistance, the paper absorbs water and becomes soft in a humid environment or under the condition of water immersion, and the effective antibacterial agent is dissolved in water and runs off, so that the antibacterial performance is greatly reduced;
the antibacterial paper prepared by the method for post-treating the base paper has the problems of low antibacterial efficiency, slow volatilization of the antibacterial agent from inside to outside, large influence of different storage conditions on the antibacterial effect and the like no matter the antibacterial agent is added externally or coated, wherein in the coating production process, the emission of solvent, waste water, waste gas and the like can be caused, the environment is not protected, and the coated polyethylene wax has the defects of no high temperature resistance and the like; and the antibacterial master batch is added into the laminating film, and the antibacterial agent in the antibacterial master batch slowly migrates to the surface of the paper for antibiosis, so that the paper has a time effect due to the migration of the antibacterial agent, and the antibacterial agent is in a free state, and gradually loses the antibacterial effect along with the lapse of time.
In addition to the preparation of antibacterial paper by adding an antibacterial agent in the paper making process or the base paper post-treatment process, in the prior art, nano-silver is coated on the base paper as an antibacterial agent, for example, the invention patent application, namely nano-silver composite antibacterial paper and the preparation method and application thereof (application number: 201410265256.5).
Obviously, the antibacterial paper prepared by the method is high in price and not economical enough.
Disclosure of Invention
In order to solve the defects of the prior art, the embodiment of the invention provides a preparation method of a chelated copper ion polymer and antibacterial barrier composite paper thereof, and aims to:
the preparation method of the chelated copper ion polymer is provided, and the antibacterial barrier composite paper/paperboard which has good waterproof performance, bonding performance, high paper binding force, uniform coating and good integrity and uniformity is provided for the packaging industry through the method, so that the packaged object can be protected practically by the packaging product made of the composite paper/paperboard, the grade and quality of the packaging product are improved, a novel and cheap and good packaging material is provided for the packaging industry, and the development of the packaging industry is promoted.
In order to achieve the above object, the present invention firstly provides a method for preparing a polymer chelated with copper ions, comprising the following steps:
dissolving polyethyleneimine in ethanol to prepare polyethyleneimine ethanol solution;
adding copper sulfate into the polyethyleneimine ethanol solution, stirring and filtering to obtain a chelated copper ion polyethyleneimine ethanol solution;
adding polyvinyl butyral into the chelated copper ion polyethyleneimine ethanol solution, and then heating and raising the temperature under a stirring state to perform grafting reaction to obtain a chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solution;
and (3) washing and drying the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solution to obtain chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solid, namely the chelated copper ion polymer.
Further, in the above method for producing a copper ion-chelating polymer:
the polyethyleneimine ethanol solution comprises 100 parts by weight of ethanol and 0.1-0.5 part by weight of copper sulfate, wherein the ethanol is analytically pure absolute ethanol;
and adding 90-95 parts by weight of polyvinyl butyral into the chelated copper ion polyethyleneimine ethanol solution.
Further, in the preparation method of the chelated copper ion polymer:
the reaction temperature of the grafting reaction is 40-100 ℃, the reaction time is 10-60 minutes, and the grafting reaction is carried out in a reflux state.
Further, in the preparation method of the chelated copper ion polymer:
the grafting reaction adopts a gradual heating method to heat and raise the temperature, and the temperature raising rate is 2 ℃/min.
Further, in the preparation method of the chelated copper ion polymer:
and the water washing is to add 10 parts by weight of water into the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solution, fully stir the solution, stand the solution and filter out water.
Further, the embodiment of the present invention also provides an antibacterial barrier composite paper/paperboard, wherein:
the antibacterial barrier composite paper is prepared by laminating a chelating copper ion polymer on the surface of paper/paperboard in an extrusion laminating mode so as to form a layer of compact chelating copper ion polymer film on the surface of the paper/paperboard; while
The chelated copper ion polymer is prepared by the preparation method of the chelated copper ion polymer.
Furthermore, in the antibacterial barrier composite paper/paperboard, the thickness of the chelated copper ion polymer film is 15-50 μm.
Furthermore, in the antibacterial barrier composite paper/paperboard, the film area temperature of the film head of the laminating film is 280-320 ℃, and the laminating amount is 15-20 g/m2The production line speed is 50-120 m/min.
Compared with the prior art, the embodiment of the invention has the beneficial effects and obvious progress that:
1) the embodiment of the invention provides a preparation method of a chelated copper ion polymer, and the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer with antibacterial and water-blocking effects can be prepared by the method, and is coated on the surface of base paper/paperboard in a film extrusion coating mode so as to form a compact chelated copper ion polymer film on the surface of the base paper/paperboard, so that a composite paper/paperboard with broad-spectrum antibacterial efficacy and water vapor barrier can be prepared, a novel and cheap packaging material is provided for the packaging industry, and the development of the packaging industry is promoted;
2) the preparation method of the chelated copper ion polymer and the antibacterial barrier composite paper/paperboard thereof provided by the invention have the advantages that the chelated copper ion polymer is novel, unique, simple and convenient to prepare, and the composite paper/paperboard prepared by the chelated copper ion polymer is not only cheap and good, but also has unique antibacterial barrier efficiency, which is based on the well-known characteristic that copper ions have broad-spectrum bactericidal property and long-acting property, and the new successful application obtained by the new method, because the common inorganic copper compound and the polymer are incompatible, the inorganic copper compound can not migrate to the surface of the polymer, and the surface of the inorganic copper compound is wrapped by a layer of polymer film and loses the bactericidal property, the common copper compound is difficult to be used as a bactericide as an additive in the polymer, namely is coated on the surface of the paper/paperboard relevantly, the bactericidal or bacteriostatic action of the composite paper/paperboard is greatly reduced, and the invention utilizes the copper ions grafted to the polymer molecular chains to enable the polymer molecular chains to move along with the movement of the molecular chains, and the composite paper/paperboard can play the bactericidal or bacteriostatic action on the surface of paper/paperboard after being coated on the surface of the paper/paperboard, thereby obtaining the novel composite paper/paperboard with antibacterial and barrier effects, and because the acting force of ionic bonds is very strong, the composite paper/paperboard prepared by utilizing the chelated copper ion polymer also has the long-acting properties of water washing resistance, organic solvent extraction resistance and sterilization or bacteriostasis;
3) the antibacterial barrier composite paper/paperboard provided by the invention fully utilizes the characteristics that polyethyleneimine chelated copper ions are grafted to a polyvinyl butyral molecular chain and have integrity and uniformity, and the copper ions can be uniformly distributed in the whole polymer system, so that the surface and the interior of the antibacterial barrier layer coated on the prepared antibacterial barrier composite paper/paperboard are relatively uniform, the defect that other antibacterial master batches must slowly migrate to the surface of the coating layer is avoided, and because the grafted product of the chelated copper ion polymer has good thermal stability, compared with plant extracts or some organic quaternary ammonium salt compounds, the antibacterial agent has high thermal stability, the thermal degradation of antibacterial substances in the processing process of the composite paper/paperboard can be avoided, in addition, because the polyvinyl butyral has good waterproof performance, the antibacterial barrier composite paper/paperboard is usually used as an adhesive film, the prepared antibacterial barrier composite paper/paperboard has good strength, can practically protect packaged objects, improves the grade and quality of packaging products, can obtain positive social benefits while obtaining good economic benefits for enterprises, and has great popularization and application values.
Detailed Description
In order to make the objects, technical solutions, advantages and significant progress of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that all the described embodiments are only some embodiments of the present invention, not all embodiments;
all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that:
the terms "first," "second," and the like in the description and in the claims of the present invention are used for distinguishing between different objects and not necessarily for describing a particular sequential order;
furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements, but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should also be noted that:
the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments;
the raw materials and equipment referred to in the following specific examples are commercially available.
The technical means of the present invention will be described in detail below with specific examples.
Example 1
This example provides a method for preparing a copper ion-chelating polymer.
A preparation method of a chelated copper ion polymer specifically comprises the following steps:
dissolving polyethyleneimine in ethanol to prepare polyethyleneimine ethanol solution;
adding copper sulfate into the polyethyleneimine ethanol solution, stirring and filtering to obtain a chelated copper ion polyethyleneimine ethanol solution;
adding polyvinyl butyral (PVB for short) into the copper ion chelated polyethyleneimine ethanol solution, heating and raising the temperature under a stirring state to perform grafting reaction to prepare a copper ion chelated polyethyleneimine grafted polyvinyl butyral polymer solution;
and (3) washing and drying the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solution to obtain chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solid, namely the chelated copper ion polymer.
In the specific preparation process of the chelated copper ion polymer:
the polyethyleneimine ethanol solution contains 100 parts by weight of ethanol and 0.1-0.5 part by weight of copper sulfate, and the ethanol is analytically pure absolute ethanol;
90-95 parts by weight of polyvinyl butyral is added into the copper ion chelating polyethyleneimine ethanol solution;
the grafting reaction is heated and heated by adopting a gradual heating method, the heating rate is 2 ℃/min, the reaction temperature is controlled to be 40-100 ℃, the reaction time is controlled to be 10-60 minutes, and the grafting reaction is carried out in a reflux state;
the water washing is to add 10 parts by weight of water into the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solution, fully stir the mixture, stand the mixture, and filter out water.
The copper ion chelated polymer provided in this example is a copper ion antibacterial polymer, and its antibacterial effect is achieved by copper ions, so the content of copper ions in the polymer determines the antibacterial ability of the copper ion chelated polymer.
The amount of chelated copper ions in the chelated copper ion polymer provided in this example was controlled by the amount of copper ions added during the preparation process, i.e., the amount of copper sulfate added, and the chelated copper ion content was measured by atomic emission spectroscopy ICP.
To make the preparation method of the chelated copper ion polymer described in this example more specific, the following data are listed in table 1 to further illustrate the preparation of the chelated copper ion polymer under different compounding ratios and preparation control conditions, and to determine the quality of the chelated copper ion polymer obtained in these specific preparation cases, wherein:
a) the ICP test result shows the weight percentage content of copper ions in the chelated copper ion polymer obtained in the preparation case, and the antibacterial or bacteriostatic capability of the chelated copper ion polymer obtained in the preparation case is represented;
b) the result obtained by the TG thermal weight loss test is the thermal weight loss percentage of the chelated copper ion polymer obtained by the preparation case after the thermal weight loss test is carried out at the temperature of 300 ℃, and the thermal stability of the chelated copper ion polymer obtained by the preparation case is represented.
TABLE 1
From the above description, it can be seen that:
the preparation method of the chelated copper ion polymer provided by the embodiment is novel, unique, simple and convenient, can obtain the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer which is good in integrity and uniformity, high in thermal stability and strong in waterproof performance, and provides a foundation for preparing novel antibacterial barrier composite paper/paperboard.
Example 2
The present embodiment provides an antimicrobial barrier composite paper/paperboard.
An antimicrobial barrier composite paper/paperboard wherein:
the antibacterial barrier composite paper is prepared by laminating a chelating copper ion polymer on the surface of paper/paperboard in an extrusion laminating mode to form a layer of compact chelating copper ion polymer film on the surface of the paper/paperboard; while
The chelated copper ion polymer was prepared by the preparation method provided in example 1 above.
In the antibacterial barrier composite paper/paperboard provided by the embodiment, the thickness of the thin film formed by laminating the chelated copper ion polymer on the paper/paperboard is 15-50 μm.
Further, the antibacterial barrier composite paper/paperboard provided by the embodiment is prepared in the process of preparing the antibacterial barrier composite paper/paperboardIn the process, when the film laminating operation is carried out, the temperature of a film area of the film head is controlled to be 280-320 ℃, and the film laminating amount is controlled to be 15-20 g/m2The production line speed is controlled to be 50-120 m/min.
The data listed in table 2 are the results of testing the antibacterial activity and physical properties of the antibacterial barrier composite paper/paperboard prepared by using the chelated copper ion polymers obtained in different preparation cases in table 1 under different laminating control conditions.
TABLE 2
From the above description, it can be seen that:
the antibacterial barrier composite paper/paperboard provided by the embodiment has good antibacterial performance, and the binding force of the chelated copper ion polymer and the paper/paperboard is good, and meanwhile, the composite paper/paperboard has good waterproof performance.
In summary, it can be seen that:
firstly, the preparation method of the chelated copper ion polymer provided by the invention is novel, unique, simple and convenient, and the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer with antibacterial and water-blocking effects can be prepared by the method;
secondly, the unique antibacterial barrier effect of the antibacterial barrier composite paper/paperboard provided by the invention is based on the characteristic that copper ions have broad-spectrum bactericidal property and long-acting property, and the novel successful application obtained by the novel method, because common inorganic copper compounds and polymers are incompatible and cannot migrate to the surface of the polymers, and the surfaces of the inorganic copper compounds are coated with a polymer film, the inorganic copper compounds also lose the bactericidal property, so that the common copper compounds are difficult to be used as additives in the polymers as bactericides, namely the common copper compounds are coated on the surfaces of the paper/paperboard, the bactericidal or bacteriostatic action is greatly reduced, the invention utilizes the copper ions grafted on the polymer molecular chains to enable the copper compounds to move along with the movement of the molecular chains, and the copper ions can play the bactericidal or bacteriostatic action on the surfaces of the paper/paperboard after being coated on the surfaces of the paper/paperboard, the composite paper/paperboard prepared by the chelated copper ion polymer also has the long-acting performance of water washing resistance, organic solvent extraction resistance and sterilization or bacteriostasis;
in addition, the antibacterial barrier composite paper/paperboard provided by the invention fully utilizes the characteristics that polyethyleneimine chelated copper ions are grafted to a polyvinyl butyral molecular chain and have integrity and uniformity, and copper ions can be uniformly distributed in the whole polymer system, so that the surface and the internal copper ions of the coated antibacterial barrier layer of the prepared antibacterial barrier composite paper/paperboard are relatively uniform, the defect that other antibacterial master batches must slowly migrate to the surface of the coating layer is avoided, and the grafted product of chelated copper ion polymer has good thermal stability and is higher than the thermal stability of plant extracts or some organic quaternary ammonium salt compounds such as antibacterial agents, so that the thermal degradation of antibacterial substances of the composite paper/paperboard in the processing process can be avoided;
in addition, as the polyvinyl butyral has good waterproof performance and good adhesive performance when being used as an adhesive film, the polyvinyl butyral has high binding force with paper/paperboard, and the prepared antibacterial barrier composite paper/paperboard has good strength, can practically protect the packaged object, improve the grade and quality of packaging products, and can obtain positive social benefits while obtaining good economic benefits for enterprises, thereby having great popularization and application values.
In the description above, the terms "present embodiment," "present invention embodiment," "illustrated as … …," "further," and the like are used to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention.
In this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example, and the particular features, structures, materials, or characteristics described, etc., may be combined or brought together in any suitable manner in any one or more embodiments or examples; furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that:
although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made on the technical solutions described in the foregoing embodiments, or some or all of the technical features of the embodiments can be equivalently replaced, and the corresponding technical solutions do not depart from the technical solutions of the embodiments of the present invention.
Claims (8)
1. A preparation method of a chelated copper ion polymer is characterized by comprising the following steps:
dissolving polyethyleneimine in ethanol to prepare polyethyleneimine ethanol solution;
adding copper sulfate into the polyethyleneimine ethanol solution, stirring and filtering to obtain a chelated copper ion polyethyleneimine ethanol solution;
adding polyvinyl butyral into the chelated copper ion polyethyleneimine ethanol solution, and then heating and raising the temperature under a stirring state to perform grafting reaction to obtain a chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solution;
and (3) washing and drying the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solution to obtain chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solid, namely the chelated copper ion polymer.
2. The method of preparing a chelated copper ion polymer according to claim 1, wherein:
the polyethyleneimine ethanol solution comprises 100 parts by weight of ethanol and 0.1-0.5 part by weight of copper sulfate, wherein the ethanol is analytically pure absolute ethanol;
and adding 90-95 parts by weight of polyvinyl butyral into the chelated copper ion polyethyleneimine ethanol solution.
3. The method of preparing a chelated copper ion polymer according to claim 1, wherein:
the reaction temperature of the grafting reaction is 40-100 ℃, the reaction time is 10-60 minutes, and the grafting reaction is carried out in a reflux state.
4. The method of preparing a chelated copper ion polymer according to claim 1, wherein: the grafting reaction adopts a gradual heating method to heat and raise the temperature, and the temperature raising rate is 2 ℃/min.
5. The method of preparing a chelated copper ion polymer according to claim 1, wherein:
and the water washing is to add 10 parts by weight of water into the chelated copper ion polyethyleneimine grafted polyvinyl butyral polymer solution, fully stir the solution, stand the solution and filter out water.
6. An antibacterial barrier composite paper/paperboard is characterized in that:
the antibacterial barrier composite paper is formed by laminating a chelating copper ion polymer on the surface of paper/paperboard in an extrusion laminating mode so as to form a layer of compact chelating copper ion polymer film on the surface of the paper/paperboard, wherein:
the chelated copper ion polymer is produced by the method for producing a chelated copper ion polymer according to any one of claims 1 to 5.
7. The antimicrobial barrier composite paper/paperboard of claim 6 wherein: the thickness of the chelated copper ion polymer film is 15-50 mu m.
8. The antimicrobial barrier composite paper/paperboard of claim 6 wherein: the film area temperature of the film head of the laminating film is 280-320 ℃, and the laminating amount is 15-20 g/m2The production line speed is 50-120 m/min.
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| CN113373719A (en) * | 2021-07-06 | 2021-09-10 | 东莞市鼎丰印刷有限公司 | Decorative paper with copper ion sterilization function and manufacturing method thereof |
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