CN112442921A - Paper-based functional material and preparation method thereof - Google Patents
Paper-based functional material and preparation method thereof Download PDFInfo
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- CN112442921A CN112442921A CN201910829822.3A CN201910829822A CN112442921A CN 112442921 A CN112442921 A CN 112442921A CN 201910829822 A CN201910829822 A CN 201910829822A CN 112442921 A CN112442921 A CN 112442921A
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- 239000000463 material Substances 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
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- 238000002156 mixing Methods 0.000 claims description 33
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- 239000002002 slurry Substances 0.000 claims description 3
- PFTAWBLQPZVEMU-DZGCQCFKSA-N (+)-catechin Chemical compound C1([C@H]2OC3=CC(O)=CC(O)=C3C[C@@H]2O)=CC=C(O)C(O)=C1 PFTAWBLQPZVEMU-DZGCQCFKSA-N 0.000 claims description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 2
- 244000037364 Cinnamomum aromaticum Species 0.000 claims description 2
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- 239000005913 Maltodextrin Substances 0.000 claims description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 2
- 244000269722 Thea sinensis Species 0.000 claims description 2
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 2
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 2
- 229960004853 betadex Drugs 0.000 claims description 2
- 229960003237 betaine Drugs 0.000 claims description 2
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 2
- ADRVNXBAWSRFAJ-UHFFFAOYSA-N catechin Natural products OC1Cc2cc(O)cc(O)c2OC1c3ccc(O)c(O)c3 ADRVNXBAWSRFAJ-UHFFFAOYSA-N 0.000 claims description 2
- 235000005487 catechin Nutrition 0.000 claims description 2
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- 229940035034 maltodextrin Drugs 0.000 claims description 2
- 150000008442 polyphenolic compounds Chemical class 0.000 claims description 2
- 235000013824 polyphenols Nutrition 0.000 claims description 2
- MKLQPOLHKMNWKN-UHFFFAOYSA-M sodium;4,8-diacetyl-1-hydroxy-2,9a-dimethyl-7,9-dioxodibenzofuran-3-olate Chemical compound [Na+].CC12C(=O)C(C(=O)C)C(=O)C=C1OC1=C2C([O-])=C(C)C(O)=C1C(C)=O MKLQPOLHKMNWKN-UHFFFAOYSA-M 0.000 claims description 2
- 238000005470 impregnation Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 5
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- 241000894006 Bacteria Species 0.000 description 2
- 241000222122 Candida albicans Species 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- 229940095731 candida albicans Drugs 0.000 description 2
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- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical compound C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 1
- REPVLJRCJUVQFA-UHFFFAOYSA-N (-)-isopinocampheol Natural products C1C(O)C(C)C2C(C)(C)C1C2 REPVLJRCJUVQFA-UHFFFAOYSA-N 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
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- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
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- 235000006708 antioxidants Nutrition 0.000 description 1
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- 229940116229 borneol Drugs 0.000 description 1
- CKDOCTFBFTVPSN-UHFFFAOYSA-N borneol Natural products C1CC2(C)C(C)CC1C2(C)C CKDOCTFBFTVPSN-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
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- 230000006196 deacetylation Effects 0.000 description 1
- 238000003381 deacetylation reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- DTGKSKDOIYIVQL-UHFFFAOYSA-N dl-isoborneol Natural products C1CC2(C)C(O)CC1C2(C)C DTGKSKDOIYIVQL-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000007946 flavonol Chemical class 0.000 description 1
- HVQAJTFOCKOKIN-UHFFFAOYSA-N flavonol Natural products O1C2=CC=CC=C2C(=O)C(O)=C1C1=CC=CC=C1 HVQAJTFOCKOKIN-UHFFFAOYSA-N 0.000 description 1
- 235000011957 flavonols Nutrition 0.000 description 1
- 239000010135 fructus aurantii immaturus Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
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- 208000014674 injury Diseases 0.000 description 1
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- 235000019808 microcrystalline wax Nutrition 0.000 description 1
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- 230000000474 nursing effect Effects 0.000 description 1
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- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000004520 water soluble gel Substances 0.000 description 1
Classifications
-
- 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
- D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
-
- 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
- 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
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
Landscapes
- Paper (AREA)
Abstract
The invention discloses a paper-based functional material and a preparation method thereof. The paper-based functional material is prepared by combining an antibacterial agent, a deodorant and nano-cellulose in a physical and chemical combination mode, and adding or spraying, surface coating, dipping and the like into pulp to prepare the paper-based functional material. The paper-based functional material has high strength, good air permeability, high water absorption speed and good antibacterial and deodorant effects, can be used as a base material of wet tissues, wiping papers, toilet papers and the like, and can also be used as a composite layer of a material of a sanitary product, thereby achieving the effects of strong moisture absorption, long-term bacteriostasis and deodorization. Compared with the original material, the paper-based functional material added with the composite finishing agent has the wet strength improved by 70 percent, the bacteriostasis rate to escherichia coli, staphylococcus aureus and fungi is over 99 percent, and NH3The removal rate can reach 94 percent.
Description
Technical Field
The invention relates to the field of production of household paper, in particular to a paper-based functional material and a preparation method thereof.
Background
The household paper mainly comprises roll paper, facial tissue, hand wiping paper, kitchen paper and the like, wherein partial products of the wet tissue and the wiping tissue in the sanitary product adopt paper-based materials as base materials, and the water absorption lining paper used as a material for wrapping a core layer of the sanitary tissue and the paper diaper also adopts the paper-based materials. With the development of economy and the improvement of living standard of people, people pay more and more attention to the comfort and the functionality of living paper and sanitary products. For comfort, users are more concerned about softness and skin-friendliness of paper-based materials; for the functionality, the bacteriostatic and deodorising functions of paper-based materials are more and more regarded. One is that because the current social environment problem is aggravated day by day, more and more bacteria, microorganism, harmful fungi have invaded our life, once the environment is suitable (the environment is dark and humid, the growth temperature is suitable 20 ~ 40 ℃, suitable pH6.5-7.5) especially easily breed a large amount of bacteria to arouse peculiar smell, pruritus, skin ulceration scheduling problem, can cause the injury of health and psychology to the user. Secondly, because of the particularity of the using population and the using part of the sanitary article, the female can generate peculiar smell in menstrual blood during menstrual period, and particularly the peculiar smell generated by the menstrual blood is aggravated in hot weather, thereby bringing about a plurality of embarrassing problems. In addition, the diaper can generate serious urine smell after being worn for a long time, and the living environment quality of babies, old people and nursing workers is seriously influenced. Therefore, the development of the antibacterial deodorizing paper-based functional material has important significance.
Currently, there are some reports on the development of antibacterial paper-based materials. For example, the invention patent with the publication number of CN109505191A discloses a preparation method of antibacterial environment-friendly paper. Preparing composite antibacterial environment-friendly paper by surface coating of an antibacterial environment-friendly coating prepared by mixing composite silica gel and water-soluble gel; or the composite silica gel and the pulp used for pulping and papermaking are mixed in pulp, and the antibacterial environment-friendly paper is prepared by the pulp papermaking process.
The invention patent with publication number CN106868943A discloses a preparation method of antibacterial toilet paper. The antibacterial liquid comprises fructus Rosae Laevigatae, fructus Aurantii Immaturus, herba Ephedrae, radix Dauci Sativae, radix Seu caulis Parthenocissi Tricuspidatae, radix Adenophorae, herba Equiseti Ramosissimi, radix Adenophorae, radix asparagi, herba Farfarae Japonicae, and water. And (3) mixing the antibacterial liquid and the curing liquid, uniformly spraying the mixed liquid on the surface of the paper by using a spray gun, and drying the paper in an oven to obtain the antibacterial toilet paper.
The invention patent with publication number CN108978325A discloses a preparation method of antibacterial water-absorbing toilet paper. Mixing polylactic acid and microcrystalline wax, adding ethanol and borneol, stirring for 10-20 min, and cooling to room temperature to obtain a prefabricated material; and adding the main material, sodium carboxymethyl starch, polyacrylamide, flavonol, active filler, antioxidant and water into the prefabricated material, uniformly mixing, pulping, and papermaking to obtain the antibacterial absorbent toilet paper.
These related patent reports are all based on the research of antibacterial performance, and lack the research of deodorizing the domestic paper base material. In addition, sanitary paper such as wet toilet paper, paper-based wiping towel, paper wet tissue and the like not only needs good softness and comfort, but also needs good physical strength. Therefore, how to develop a paper-based functional material with high wet strength, good water absorption and retention and antibacterial and deodorant functions is a key problem of better meeting the requirements of people for toilet paper.
Disclosure of Invention
In order to overcome the defects, the invention provides a paper-based functional material and a preparation method thereof, wherein a nano-cellulose material loaded with an antibacterial deodorant is introduced to prepare a paper-based material with antibacterial and deodorant functions, the paper-based functional material has high strength, good air permeability, high water absorption speed and good antibacterial and deodorant effects, and can be used as a base material of wet tissues, wiping papers, toilet papers and the like, and also can be used as a composite layer of a material of a sanitary product to endow the sanitary product with the functions of deodorization and bacteriostasis.
A paper-based functional material and a preparation method thereof are characterized in that a composite finishing agent is prepared by combining an antibacterial agent, a deodorant and nano-cellulose in a physical and chemical mode, and the paper-based functional material is prepared by adding the composite finishing agent in slurry or spraying, surface coating, dipping and the like. The method comprises the following steps:
(1) weighing a certain amount of nano-cellulose, and uniformly mixing the nano-cellulose with deionized water to obtain a nano-cellulose suspension;
(2) weighing a certain amount of antibacterial agent and deionized water, uniformly mixing to obtain a transparent solution, adding a deodorant into the solution, and stirring at room temperature to obtain an antibacterial deodorizing finishing agent;
(3) adding into slurry: adding 0.01-20% (w/w) of nano cellulose suspension and an antibacterial deodorizing finishing agent into the paper pulp fibers, stirring and mixing uniformly, and obtaining a paper-based functional material through papermaking, pressing and drying;
(4) spraying and adding: adding the antibacterial and deodorant finishing agent obtained in the step (2) into the nano-cellulose suspension obtained in the step (1), and uniformly mixing to obtain a composite finishing agent; carrying out spraying operation on the paper, and drying the sprayed paper to obtain a paper-based functional material;
(5) dipping and adding: adding the antibacterial and deodorant finishing agent obtained in the step (2) into the nano-cellulose suspension obtained in the step (1), and uniformly mixing to obtain a composite finishing agent; dipping paper, completely dipping the paper made by the paper into the composite finishing agent, pressing by a surface sizing machine, and drying to obtain a paper-based functional material;
(6) surface coating: adding the antibacterial and deodorant finishing agent obtained in the step (2) into the nano-cellulose suspension obtained in the step (1), and uniformly mixing to obtain a composite finishing agent; and coating the surface of the paper by using a coating machine, uniformly moving the formed film coated paper into a drying channel, and drying to obtain the paper-based functional material.
Preferably, the antimicrobial agent is a natural antimicrobial agent: one or more of carboxymethyl chitosan, chitosan quaternary ammonium salt, catechin, garlicin, cassia oil and betaine are mixed in any proportion.
Preferably, the deodorants used may be: the used deodorant is: one or more of beta-cyclodextrin, tea polyphenol, maltodextrin and sodium usnate are mixed according to any proportion.
Preferably, the surface of the nano-cellulose is not charged;
preferably, the deacetylation degree of the chitosan quaternary ammonium salt is more than or equal to 90;
the invention has the advantages of
(1) The nano-cellulose is a green environment-friendly material with large specific surface area, good hydrophilicity and high Young modulus, and the strength, the antibacterial property and the deodorization performance of the paper-based functional material are improved by introducing the nano-cellulose. Firstly, the Young's modulus of the nano-cellulose is very high, and the dry and wet strength of the paper-based functional material can be greatly improved by adding a very small amount of nano-cellulose. And secondly, the supermolecular structure and the special physical property of the nano-cellulose can well load the antibacterial agent, thereby reducing the loss of the antibacterial agent and the pollution to the surrounding environment. Finally, the nano-cellulose is an ultra-fine fiber and is provided with a groove structure, and a network structure formed by the nano-cellulose has super strong adsorption capacity, can absorb nano-scale dirt, can thoroughly remove micro dirt and some odor sources invisible to naked eyes, and can improve the deodorization rate of the paper-based functional material.
(2) The used antibacterial agent and deodorant are green and environment-friendly materials, and do not cause harm to the environment and human body. The prepared antibacterial and deodorant paper-based functional material has the bacteriostasis rate of over 99 percent on escherichia coli, staphylococcus aureus and candida albicans, and has NH function3The removal rate of the catalyst can reach 94 percent.
Detailed Description
The invention is described below by means of specific embodiments. Unless otherwise specified, the technical means used in the present invention are well known to those skilled in the art. In addition, the embodiments should be considered illustrative, and not restrictive, of the scope of the invention, which is defined solely by the claims. It will be apparent to those skilled in the art that various changes or modifications in the components and amounts of the materials used in these embodiments can be made without departing from the spirit and scope of the invention.
Example 1
(1) Weighing a certain amount of nano-cellulose, and uniformly mixing the nano-cellulose with deionized water to obtain 0.01% (w/w) nano-cellulose suspension;
(2) weighing a certain amount of antibacterial agent and deionized water, uniformly mixing to obtain 0.1% (w/w) transparent solution, adding 1% (w/w) deodorant into the solution, and stirring at room temperature for 10min to obtain the antibacterial deodorizing finishing agent;
(3) adding 0.05% (w/w) of wet strength agent into the paper pulp fiber, stirring for 1min, adding the nano cellulose suspension and the antibacterial deodorizing finishing agent, stirring for 1min, uniformly mixing, papermaking, pressing and drying to obtain the paper-based functional material.
Example 2
(1) Weighing a certain amount of nano-cellulose, and uniformly mixing the nano-cellulose with deionized water to obtain a 10% (w/w) nano-cellulose suspension;
(2) weighing a certain amount of antibacterial agent and deionized water, uniformly mixing to obtain 15% (w/w) transparent solution, adding 15% (w/w) deodorant into the solution, and stirring at room temperature for 10min to obtain the antibacterial deodorizing finishing agent;
(3) adding the prepared antibacterial deodorizing finishing agent into the nano-cellulose suspension, and uniformly mixing to obtain a composite finishing agent; and (3) carrying out spraying operation on one surface of the paper, and drying the sprayed paper in a drying cylinder at 80 ℃ for 5min to obtain the paper-based functional material.
Example 3
(1) Weighing a certain amount of nano-cellulose, and uniformly mixing the nano-cellulose with deionized water to obtain 15% (w/w) nano-cellulose suspension;
(2) weighing a certain amount of antibacterial agent and deionized water, uniformly mixing to obtain a 20% (w/w) transparent solution, adding 20% (w/w) deodorant into the solution, and stirring at room temperature for 40min to obtain the antibacterial deodorizing finishing agent;
(3) adding the prepared antibacterial deodorizing finishing agent into the nano-cellulose suspension, and uniformly mixing to obtain a composite finishing agent; and (3) carrying out spraying operation on the paper twice, firstly spraying one surface of the paper, then placing the paper in a drying cylinder at 80 ℃ for drying until the paper becomes eighty percent dry, placing the paper for 30min, then spraying the other surface of the paper, and placing the sprayed paper at 110 ℃ for drying to obtain the paper-based functional material.
Example 4
(1) Weighing a certain amount of nano-cellulose, and uniformly mixing the nano-cellulose with deionized water to obtain 20% (w/w) nano-cellulose suspension;
(2) weighing a certain amount of antibacterial agent and deionized water, uniformly mixing to obtain a 30% (w/w) transparent solution, adding 30% (w/w) deodorant into the solution, and stirring at room temperature for 40min to obtain the antibacterial deodorizing finishing agent;
(3) adding the prepared antibacterial deodorizing finishing agent into the nano-cellulose suspension, and uniformly mixing to obtain a composite finishing agent; and coating the surface of the paper by using a coating machine, uniformly moving the formed film coated paper into a drying tunnel, and then drying at 95 ℃ to obtain the paper-based functional material.
Example 5
(1) Weighing a certain amount of nano-cellulose, and uniformly mixing the nano-cellulose with deionized water to obtain 0.08% (w/w) nano-cellulose suspension;
(2) weighing a certain amount of antibacterial agent and deionized water, uniformly mixing to obtain 0.1% (w/w) transparent solution, adding 5% (w/w) deodorant into the solution, and stirring at room temperature for 20min to obtain the antibacterial deodorizing finishing agent;
(3) adding the prepared antibacterial deodorizing finishing agent into the nano-cellulose suspension, and uniformly mixing to obtain a composite finishing agent; and (3) carrying out dipping operation on the paper, completely dipping the paper made by the paper into the composite finishing agent for 3min, pressing by a surface sizing machine, and drying in a drying cylinder at 90 ℃ for 5min to obtain the paper-based functional material.
Comparative example 1
The base paper not impregnated in example 5 was used as comparative example 1
Comparative example 2
(1) Weighing a certain amount of antibacterial agent and deionized water, uniformly mixing to obtain 0.1% (w/w) transparent solution, adding 5% (w/w) deodorant into the solution, and stirring at room temperature for 20min to obtain the antibacterial deodorizing finishing agent;
(2) and (3) carrying out dipping operation on the paper, completely dipping the paper made by the paper into the antibacterial and deodorant finishing agent for 3min, pressing by a surface sizing machine, and drying in a drying cylinder at 90 ℃ for 5min to obtain the paper-based functional material.
The paper-based functional materials prepared in example 5 and comparative examples 1 and 2 were subjected to dry tensile strength, wet tensile strength, antibacterial test, deodorization ratio, and other performance tests, and the results were as follows:
the antibacterial experiment test adopts GB20944.3 oscillation method to test NH3The removal rate was measured by a detector tube method.
As can be seen from the example 5, the comparative examples 1 and 2, the prepared paper-based functional material can effectively inhibit escherichia coli, staphylococcus aureus and candida albicans, and can effectively remove NH3。
It can be seen from example 5 and comparative example 2 that the addition of nanocellulose is effective in improving the strength of the paper-based material and for NH3Has certain adsorption performance.
Claims (6)
1. The preparation method of the paper-based functional material is characterized by comprising the following steps:
(1) weighing a certain amount of nano-cellulose, and uniformly mixing the nano-cellulose with deionized water to obtain a nano-cellulose suspension;
(2) weighing a certain amount of antibacterial agent and deionized water, uniformly mixing to obtain a transparent solution, adding a deodorant into the solution, and uniformly stirring and mixing to obtain an antibacterial deodorizing finishing agent;
(3) adding into slurry: adding 0.01-20% (w/w) of nano cellulose suspension and an antibacterial deodorizing finishing agent into the paper pulp fibers, stirring and mixing uniformly, and obtaining a paper-based functional material through papermaking, pressing and drying;
(4) spraying and adding: adding the antibacterial and deodorant finishing agent prepared in the step (2) into the nano-cellulose suspension obtained in the step (1), and uniformly mixing to obtain a composite finishing agent; carrying out spraying operation on the paper, and drying the sprayed paper to obtain a paper-based functional material;
(5) dipping and adding: adding the antibacterial and deodorant finishing agent prepared in the step (2) into the nano-cellulose suspension obtained in the step (1), and uniformly mixing to obtain a composite finishing agent; dipping paper, completely dipping the paper made by the paper into the composite finishing agent, pressing by a surface sizing machine, and drying to obtain a paper-based functional material;
(6) surface coating: adding the antibacterial and deodorant finishing agent prepared in the step (2) into the nano-cellulose suspension obtained in the step (1), and uniformly mixing to obtain a composite finishing agent; and coating the surface of the paper by using a coating machine, uniformly moving the formed film coated paper into a drying channel, and drying to obtain the paper-based functional material.
2. A paper-based functional material according to claim 1, wherein the prepared nanocellulose suspension and the antibacterial deodorizing finish are added separately or in combination to the pulp.
3. A paper-based functional material according to claim 1, characterized in that the antibacterial agents used are natural antibacterial agents: one or more of carboxymethyl chitosan, chitosan quaternary ammonium salt, catechin, garlicin, cassia oil and betaine are mixed in any proportion.
4. A paper-based functional material according to claim 1, characterized in that the deodorants used are: one or more of beta-cyclodextrin, tea polyphenol, maltodextrin and sodium usnate are mixed according to any proportion.
5. The paper-based functional material according to claim 1, wherein the nano-cellulose, the antibacterial agent and the deodorant in the spraying, surface coating and impregnation addition respectively account for 0.01-20% (w/w), 0.05-30% (w/w) and 0.5-30% (w/w) of the total mass of the solvent.
6. A paper-based functional material as claimed in claim 1, characterized in that both spraying and surface coating allow the treatment of one or both sides of the paper.
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