Cellulose-based adhesive for wood as well as preparation method and application of cellulose-based adhesive

Abstract

The invention provides a cellulose-based adhesive for wood as well as a preparation method and application of the cellulose-based adhesive. The cellulose-based adhesive at least comprises a cellulose derivative and an additive, the additive comprises a first additive and / or a second additive; the first additive is selected from dopamine; the second additive is selected from functional additives. The cellulose-based adhesive disclosed by the invention has relatively strong adhesive property and relatively good water resistance, is free of aldehyde substances and any organic solvent, and has a relatively good application prospect in the fields of plywood, interface adhesion and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of adhesives, and particularly relates to a cellulose-based adhesive for wood, a preparation method thereof, and an application thereof. Background Art

[0002] Most adhesives are derived from petroleum-based raw materials, such as polyurethane adhesives, urea-formaldehyde resins, phenolic resins, polyacrylamide, etc. These adhesives have been very successful in commercialization and have shown excellent bonding strength. However, petroleum-based adhesives are difficult to degrade in the environment and difficult to participate in the natural cycle; moreover, the proportion of adhesives in the parts is very small, making it difficult to effectively recycle and reuse. Therefore, the development of new adhesives with both environmental friendliness and high adhesiveness is a research hotspot in this field.

[0003] As the most abundant renewable natural polymer on the earth, cellulose has excellent biodegradability, biocompatibility, high mechanical strength, and the ability to be chemically modified. This has enabled more and more researchers to design cellulose-based materials through physical or chemical modification based on the excellent properties of cellulose and apply them to various fields. Cellulose is a natural macromolecular compound composed of glucose units, and it has a large number of hydroxyl groups. This not only endows cellulose with excellent chemical modification ability but also indicates that cellulose can provide bonding sites. However, while the abundant hydroxyl groups endow cellulose with excellent chemical modification ability and adhesiveness, they also endow cellulose with good hydrophilicity, resulting in a significant decrease in the bonding strength of cellulose-based adhesives in humid or aqueous environments. In addition, relying solely on the hydrogen bond interaction provided by hydroxyl groups, it is difficult for cellulose to form strong adhesion. Therefore, constructing cellulose-based adhesives requires enhancing their adhesion and improving their water resistance. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides the following technical solutions:

[0005] A cellulose-based adhesive, which at least comprises a cellulose derivative and an additive.

[0006] According to an embodiment of the present invention, the additive comprises a first additive and / or a second additive.

[0007] Preferably, the first additive is selected from dopamine.

[0008] Preferably, the second additive is selected from functional additives, such as water-resistant additives. Further, the water-resistant additive is selected from 2,2'-dithiobis(diethylamine).

[0009] According to an embodiment of the present invention, the cellulose-based adhesive further comprises a solvent. Preferably, the solvent is selected from water.

[0010] According to an embodiment of the present invention, in the cellulose-based adhesive, the mass ratio of the cellulose derivative to the additive is 1:0.33 to 1.5, preferably 1:0.33 to 1.05, 1:0.5.

[0011] According to an embodiment of the present invention, in the cellulose-based adhesive, the mass ratio of the first additive to the second additive is 0.33 to 1:0.01 to 0.05, for example 0.5:0.01 to 0.05.

[0012] According to a preferred embodiment of the present invention, the cellulose-based adhesive comprises:

[0013] 1 part by weight of cellulose derivative;

[0014] 0.33 to 1 part by weight of the first additive;

[0015] 0.01 to 0.05 part by weight of the second additive;

[0016] 1 to 4 parts by weight of solvent.

[0017] According to an embodiment of the present invention, the cellulose derivative is obtained by reacting cellulose with a monomer.

[0018] According to an embodiment of the present invention, the cellulose may be selected from celluloses known in the art, for example, selected from at least one of microcrystalline cellulose, cotton pulp, wood pulp, bamboo pulp, straw pulp, refined cotton, defatted cotton, cotton linter, bacterial cellulose.

[0019] Preferably, the cellulose may be selected from at least one of microcrystalline cellulose, cotton pulp, refined cotton, wood pulp.

[0020] According to an embodiment of the present invention, the monomer is selected from tert-butyl acetoacetate.

[0021] According to an embodiment of the present invention, the cellulose derivative is preferably cellulose acetoacetate (CAA). Further, the degree of substitution of the cellulose acetoacetate is 0.5 to 2.0.

[0022] The inventors found that by substituting some hydroxyl groups in cellulose with acetoacetate groups, and then introducing polyphenol groups and hydrophobic groups based on the Schiff base reaction through the acetoacetate groups, the adhesion and water resistance of the cellulose-based adhesive can be enhanced.

[0023] According to a preferred embodiment of the present invention, the cellulose acetoacetate is obtained by reacting cellulose and a monomer in an ionic liquid.

[0024] According to an embodiment of the present invention, the ionic liquid is selected from ionic liquids known in the art, and the present invention does not make specific limitations. Preferably, the ionic liquid is selected from 1-ethyl-3-methylimidazolium chloride ionic liquid ([EMIM][Cl]), 1-ethyl-3-methylimidazolium bromide ionic liquid ([EMIM][Br]), 1-ethyl-3-methylimidazolium formate ionic liquid ([EMIM][HCOO]), 1-ethyl-3-methylimidazolium acetate ionic liquid ([EMIM][Ac]), 1-ethyl-3-methylimidazolium octanoate ionic liquid ([EMIM][Oct]), 1-ethyl-3-methylimidazolium methyl phosphate ionic liquid ([EMIM][MP]), 1-ethyl-3-methylimidazolium dimethyl phosphate ionic liquid ([EMIM][DMP]), 1-ethyl-3-methylimidazolium diethyl phosphate ionic liquid ([EMIM][DEP]), 1-ethyl-3-methylimidazolium propionate ionic liquid ([EMIM][OPr]), 1-ethyl-3-methylimidazolium butyrate ionic liquid ([EMIM][OBu]), 1-ethyl-3-methylimidazolium glycinate ionic liquid ([EMIM][Gly]), 1-ethyl-3-methylimidazolium lysinate ionic liquid ([EMIM][Lys]), 1-allyl-3-methylimidazolium chloride ionic liquid ([AMIM][Cl]), 1-allyl-3-methylimidazolium bromide ionic liquid ([AMIM][Br]), 1-allyl-3-methylimidazolium formate ionic liquid ([AMIM][HCOO]), 1-allyl-3-methylimidazolium acetate ionic liquid ([AMIM][Ac]), 1-butyl-3-methylimidazolium chloride ionic liquid ([BMIM][Cl]), 1-butyl-3-methylimidazolium bromide ionic liquid ([BMIM][Br]), 1-butyl-3-methylimidazolium formate ionic liquid ([BMIM][HCOO]), 1-butyl-3-methylimidazolium acetate ionic liquid ([BMIM][Ac]), 1-butyl-3-methylimidazolium glycolate ionic liquid ([BMIM][HOCH2COO]), 1-butyl-3-methylimidazolium propionate ionic liquid ([BMIM][CH3CH2COO]), 1-butyl-3-methylimidazolium lactate ionic liquid [BMIM][Lac], 1-butyl-3-methylimidazolium butyrate ionic liquid ([BMIM][CH3CH2CH2COO]), 1-butyl-3-methylimidazolium benzoate ionic liquid ([BMIM][C6H5COO]), 1-butyl-3-methylimidazolium glycinate ionic liquid ([BMIM][H2NCH2COO]), 1-butyl-3-methylimidazolium dicyanamide ionic liquid ([BMIM][N(CN)2]), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid ([BMIM][Tf2N]).1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid ([BMIM][PF6]), 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid ([BMIM][BF4]), 1-butyl-3-methylimidazolium methyl sulfonate ionic liquid ([BMIM][MeOSO3]), 1-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid ([BMIM][CF3SO3]), 1-butyl-2,3-dimethylimidazolium tetrafluoroborate ionic liquid ([BMMIM][BF4]), 3-methylimidazolium formate ionic liquid ([MIM][HCOO]), 1,3-dimethylimidazolium chloride ionic liquid ([MMIM][Cl]), 1,3-dimethylimidazolium methyl phosphate ionic liquid ([MMIM][MP]), 1,3-dimethylimidazolium dimethyl phosphate ionic liquid ([MMIM][DMP]), 1,3-dimethylimidazolium methyl sulfonate ionic liquid ([MMIM][MeOSO3]), 1-hydroxy-3-methyl-imidazolium chloride ionic liquid ([HMIM][Cl]), 1-hydroxy-3-methyl-imidazolium trifluoromethanesulfonate ionic liquid ([HMIM][CF3SO3]), 1-(2-hydroxyethyl)-3-methylimidazolium chloride ionic liquid ([HOEMIM][Cl]), 1-methoxymethyl-3-methylimidazolium bromide ionic liquid ([MeOMMIM][Br]), 1-methoxyethyl-3-methylimidazolium bromide ionic liquid ([MeOEMIM][Br]), N-ethylpyridinium chloride ionic liquid ([EPyr][Cl]), N-ethylpyridinium bromide ionic liquid ([EPyr][Br]), N-methylpyridinium formate ionic liquid ([MPyr][HCOO]), tris(2-hydroxyethyl)methylammonium acetate ionic liquid ([THEMA][Ac]), tris(2-hydroxyethyl)methylammonium methyl sulfonate ionic liquid ([THEMA][MeOSO3]), tris(2-hydroxyethyl)methylammonium trifluoromethanesulfonate ionic liquid [THEMA][CF3SO3], tetrabutylphosphonium valinate ionic liquid [PBu4][Val], tetrabutylphosphonium lysinate ionic liquid [PBu4][Lys], tetrabutylphosphonium glycinate ionic liquid [PBu4][Gly], 1-benzyl-3-methylimidazolium chloride ionic liquid ([BzMIM][Cl]), 1-benzyl-3-methylimidazolium dicyanamide ionic liquid ([BzMIM][DCA]), 1-m-tolylmethyl-3-methylimidazolium chloride ionic liquid ([MeBzMIM][Cl]), 1-m-methoxybenzyl-3-methylimidazolium chloride ionic liquid ([MeOBzMIM][Cl]), choline chloride ionic liquid ([Ch][Cl]), choline bromide ionic liquid (Ch][Br]) choline acetate ionic liquid ([Ch][CH3COO]),At least one of choline propionate ionic liquid ([Ch][CH3CH2COO]), choline butyrate ionic liquid ([Ch][CH3CH2CH2COO]), glycine hydrochloride ionic liquid ([Gly][Cl]), 1,5-diazabicyclo[4.3.0]non-5-ene acetate ionic liquid ([DBNH][Ac]), etc.

[0025] According to an embodiment of the present invention, the method for preparing the cellulose acetoacetate includes the following steps:

[0026] (1) Dissolve cellulose in an ionic liquid, and add tert-butyl acetoacetate for reaction;

[0027] (2) Add the reaction solution to an alcohol (such as ethanol) for precipitation to obtain cellulose acetoacetate.

[0028] According to an embodiment of the present invention, in step (1), the dissolution concentration of the cellulose in the ionic liquid is 4-20 wt%, for example, 10 wt% or 15 wt%.

[0029] According to an embodiment of the present invention, in step (1), the dissolution temperature of the cellulose in the ionic liquid is above 50 °C, for example, 80 °C.

[0030] According to an embodiment of the present invention, in step (1), the mass ratio of cellulose to tert-butyl acetoacetate is 3:1 to 8:1, for example, 5:1.

[0031] According to an embodiment of the present invention, in step (1), the reaction time is 0.5-2.0 h, and the reaction temperature is 100-150 °C.

[0032] According to an embodiment of the present invention, in step (2), drying can be performed after precipitation. Preferably, the drying temperature is 50-100 °C, for example, 60 °C.

[0033] According to an embodiment of the present invention, the cellulose-based adhesive has good adhesion ability.

[0034] According to an embodiment of the present invention, the cellulose-based adhesive has enhanced tensile shear strength, and the tensile shear strength is greater than 3 MPa, for example, 3.5-7.0 MPa, or 4.0 MPa, 5.0 MPa, 6.0 MPa.

[0035] According to an exemplary embodiment of the present invention, the cellulose-based adhesive includes: 1 part by weight of cellulose acetoacetate, 0.33-1 part by weight of dopamine, 0.01-0.05 part by weight of 2,2'-dithiobis(diethylamine), and 1-4 parts by weight of water.

[0036] The present invention also provides a method for preparing the above-mentioned cellulose-based adhesive, and the preparation method includes the following steps:

[0037] 1) Prepare an aqueous solution of a cellulose derivative;

[0038] 2) Add an additive to the aqueous solution of the cellulose derivative in step 1) and react to obtain a cellulose-based adhesive.

[0039] According to an embodiment of the present invention, in step 1), the preparation of the aqueous solution of the cellulose derivative specifically includes: adding the cellulose derivative to water to obtain an aqueous solution of the cellulose derivative; the cellulose derivative has the meaning as described above.

[0040] According to an embodiment of the present invention, in step 2), the reaction conditions include: the reaction temperature is 10-30 °C, the reaction time is 1-24 h, for example, 12 h.

[0041] The present invention also provides the application of the above-mentioned cellulose-based adhesive in the fields of interface adhesion, etc., for example, it is applied in the preparation of plywood.

[0042] According to an embodiment of the present invention, the adhesive is used to bond two or more identical or different interfaces, and the interface matrix at least includes wood.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] By regulating the chemical composition, the present invention obtains a cellulose-based adhesive with both strong adhesion performance and good water resistance. Without using aldehyde substances and any organic solvents, it has a high ability to bond wood and water resistance, solving the problems of insufficient adhesion performance and water resistance in the prior art, and has good application prospects in the fields of plywood, interface adhesion, etc. Description of the Drawings

[0045] Figure 1 It is the infrared spectrum of the cellulose-based adhesive prepared in Example 1.

[0046] Figure 2 It is the adhesion strength of the cellulose-based adhesives prepared in Comparative Example 1 and Examples 1-3.

[0047] Figure 3 It is the adhesion strength of the water-resistant cellulose-based adhesives prepared in Examples 2, 4, and 5. Detailed Description of the Invention

[0048] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only for illustrative explanation of the present invention and should not be construed as limiting the protection scope of the present invention. All technologies implemented based on the above content of the present invention are covered within the scope of protection intended by the present invention.

[0049] Unless otherwise specified, the raw materials and reagents used in the following examples are commercially available products or can be prepared by known methods.

[0050] The tensile shear strength (i.e., adhesion strength) in the present invention is measured according to the ASTM D1002 standard. The specific detection process is as follows: A plate with a size of 100 mm × 25 mm × 2.5 mm is used as the substrate, the lap length is 12.5 mm, 0.5 mL of cellulose-based adhesive is sucked and evenly coated on the substrate, and a spline is prepared by hot pressing at 60 °C for 5 min under a pressure of 0.02 MPa. The spline is placed at 25 °C and 30% humidity for 24 h to balance, and a tensile test is carried out on a universal tensile machine at a tensile rate of 0.5 mm / min.

[0051] Preparation Example 1

[0052] The preparation method of cellulose acetoacetate includes the following steps:

[0053] 1) Dissolve cellulose (microcrystalline cellulose) in AmimCl ionic liquid to obtain a cellulose solution; the cellulose dissolution concentration is 8 wt%, and the dissolution temperature is 80 °C;

[0054] 2) Take the above cellulose solution and add different amounts of tert-butyl acetoacetate for reaction. Among them, the mass ratios of cellulose to tert-butyl acetoacetate are 4:1, 5:1, 7:1, and 8:1 respectively, the reaction time is 1.5 h, and the reaction temperature is 110 °C;

[0055] 3) Add the above reaction solution to ethanol for precipitation and dry at 60 °C to finally obtain cellulose acetoacetate with different degrees of substitution.

[0056] It can be known through testing that when the mass ratios of cellulose to tert-butyl acetoacetate are 4:1, 5:1, 7:1, and 8:1 respectively, the degrees of substitution of the prepared cellulose acetoacetate are 0.60, 0.72, 0.78, and 0.85 respectively.

[0057] Example 1

[0058] Weigh 0.2 g of cellulose acetoacetate (degree of substitution 0.78) and add it to water to dissolve to obtain a 20 wt% aqueous solution of cellulose acetoacetate. Take 0.066 g of dopamine and add it to the above aqueous solution of cellulose acetoacetate. After complete dissolution, place it at room temperature for reaction for 12 h.

[0059] Using the above method for the tensile test, it was detected that the tensile shear strength of the bonded wooden board was 5.78 MPa.

[0060] Example 2

[0061] Weigh 0.2 g of cellulose acetoacetate (degree of substitution 0.85) and add it to water to dissolve and obtain a 20 wt% aqueous solution of cellulose acetoacetate. Take 0.132 g of dopamine and add it to the above aqueous solution of cellulose acetoacetate. After complete dissolution, place it at room temperature and react for 12 h.

[0062] Using the above method for the tensile test, it was detected that the tensile shear strength of the bonded wooden board was 6.79 MPa.

[0063] Example 3

[0064] Weigh 0.3 g of cellulose acetoacetate (degree of substitution 0.60) and add it to water to dissolve and obtain a 15 wt% aqueous solution of cellulose acetoacetate. Take 0.264 g of dopamine and add it to the above aqueous solution of cellulose acetoacetate. After complete dissolution, place it at room temperature and react for 12 h.

[0065] Using the above method for the tensile test, it was detected that the tensile shear strength of the bonded wooden board was 3.56 MPa.

[0066] Example 4

[0067] Weigh 0.3 g of cellulose acetoacetate (degree of substitution 0.72) and add it to water to dissolve and obtain a 15 wt% aqueous solution of cellulose acetoacetate. Take 0.132 g of dopamine and add it to the above aqueous solution of cellulose acetoacetate. After complete dissolution, place it at room temperature and react for 12 h. Take 0.002 g of 2,2'-dithiobis(ethylamine) and add it to the above reaction solution.

[0068] Using the above method for the tensile test, it was detected that the tensile shear strength of the bonded wooden board was 4.43 MPa.

[0069] Example 5

[0070] Weigh 0.2 g of cellulose acetoacetate (degree of substitution 0.78) and add it to water to dissolve and obtain a 20 wt% aqueous solution of cellulose acetoacetate. Take 0.132 g of dopamine and add it to the above aqueous solution of cellulose acetoacetate. After complete dissolution, place it at room temperature and react for 12 h. Take 0.01 g of 2,2'-dithiobis(ethylamine) and add it to the above reaction solution.

[0071] Using the above method for the tensile test, it was detected that the tensile shear strength of the bonded wooden board was 6.26 MPa.

[0072] Example 6

[0073] Weigh 0.2 g of cellulose acetoacetate (degree of substitution 0.82) and add it to water to dissolve and obtain a 20 wt% aqueous solution of cellulose acetoacetate. Take 0.132 g of dopamine and add it to the above-mentioned aqueous solution of cellulose acetoacetate. After complete dissolution, place it at room temperature and react for 12 h. Take 0.002 g of 2,2'-dithiobis(ethylamine) and add it to the above reaction solution. Before testing, soak the bonded wooden board in ethanol for 24 h.

[0074] Using the above method for the tensile test, after testing, the tensile shear strength of the bonded wooden board soaked in ethanol is 3.58 MPa.

[0075] Example 7

[0076] Weigh 0.2 g of cellulose acetoacetate (degree of substitution 0.82) and add it to water to dissolve and obtain a 20 wt% aqueous solution of cellulose acetoacetate. Take 0.132 g of dopamine and add it to the above-mentioned aqueous solution of cellulose acetoacetate. After complete dissolution, place it at room temperature and react for 12 h. Take 0.006 g of 2,2'-dithiobis(ethylamine) and add it to the above reaction solution. Before testing, soak the bonded wooden board in water for 24 h.

[0077] Using the above method for the tensile test, after testing, the tensile shear strength of the bonded wooden board soaked in ethanol is 3.70 MPa.

[0078] Example 8

[0079] Weigh 0.2 g of cellulose acetoacetate (degree of substitution 0.82) and add it to water to dissolve and obtain a 20 wt% aqueous solution of cellulose acetoacetate. Take 0.132 g of dopamine and add it to the above-mentioned aqueous solution of cellulose acetoacetate. After complete dissolution, place it at room temperature and react for 12 h. Take 0.01 g of 2,2'-dithiobis(ethylamine) and add it to the above reaction solution. Before testing, soak the bonded wooden board in ethanol for 24 h.

[0080] Using the above method for the tensile test, after testing, the tensile shear strength of the bonded wooden board soaked in ethanol is 5.24 MPa.

[0081] Comparative Example 1

[0082] Take the 20 wt% aqueous solution of cellulose acetoacetate prepared in the example and directly use the above method for the tensile test. After testing, the tensile shear strength of the bonded wooden board is 4.90 MPa.

[0083] Test Example

[0084] Prepare the bonded wooden board samples with reference to Embodiment 2, 4 and 5 respectively, and divide them into 3 groups of samples for tensile test by the above method. Among them, the 3 groups of samples are directly tested after bonding, tested after soaking in water for 24 hours, and tested after soaking in ethanol for 24 hours respectively. The test results are as Figure 3 shown.

[0085] The above describes the exemplary embodiments of the present invention. However, the protection scope of this application is not limited to the above embodiments. Any modifications, equivalent replacements, improvements, etc. made by those skilled in the art within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cellulose-based adhesive, characterized in that: It comprises at least a cellulose derivative, and an additive; The additives include a first additive and / or a second additive; The first additive is selected from dopamine; the second additive is selected from functional additives.

2. The cellulose-based adhesive according to claim 1, characterized in that The functional additive is a water-resistant additive; the water-resistant additive is selected from 2,2'-dithiodiethylamine; Preferably, the cellulose-based adhesive further comprises a solvent; the solvent is selected from water; Preferably, in the cellulose-based adhesive, the mass ratio of the cellulose derivative to the additive is 1:0.33-1.5; Preferably, in the cellulose-based adhesive, the mass ratio of the first additive to the second additive is 0.33-1:0.01-0.05; Preferably, the cellulose-based adhesive comprises: 1 part by weight of a cellulose derivative; 0.33 to 1 parts by weight of a first additive; 0.01 to 0.05 parts by weight of a second additive; 1 to 4 parts by weight of solvent.

3. The cellulose-based adhesive according to claim 1 or 2, characterized in that: The cellulose derivative is obtained by reacting cellulose with a monomer; Preferably, the cellulose is selected from at least one of microcrystalline cellulose, cotton pulp, wood pulp, bamboo pulp, straw pulp, refined cotton, absorbent cotton, cotton linters, and bacterial cellulose; Preferably, the monomer is selected from tert-butyl acetoacetate; Preferably, the cellulose derivative is cellulose acetoacetate.

4. The cellulose-based adhesive according to claim 3, characterized in that The cellulose acetoacetate is obtained by reacting cellulose and a monomer in an ionic liquid.

5. The cellulose-based adhesive according to claim 4, characterized in that The preparation method of cellulose acetoacetate comprises the following steps: (1) dissolving cellulose in an ionic liquid and adding tert-butyl acetoacetate for reaction; (2) The reaction solution is added to alcohol for precipitation to obtain cellulose acetoacetate.

6. The cellulose-based adhesive according to claim 5, characterized in that In step (1), the cellulose is dissolved in the ionic liquid at a concentration of 4 to 20 wt %; Preferably, in step (1), the dissolution temperature of the cellulose in the ionic liquid is above 50°C; Preferably, in step (1), the mass ratio of cellulose to tert-butyl acetoacetate is 3:1 to 8:1; Preferably, in step (1), the reaction time is 0.5 to 2.0 h, and the reaction temperature is 100 to 150°C.

7. The cellulose-based adhesive according to any one of claims 1 to 6, characterized in that: The cellulose-based adhesive has good bonding ability; Preferably, the cellulose-based adhesive has enhanced tensile shear strength, the tensile shear strength being greater than 3 MPa.

8. The method for preparing the cellulose-based adhesive according to any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: 1) preparing an aqueous solution of a cellulose derivative; 2) Adding additives to the aqueous solution of the cellulose derivative in step 1) to react to obtain a cellulose-based adhesive.

9. The preparation method according to claim 8, characterized in that: In step 1), the preparation of the aqueous solution of the cellulose derivative specifically comprises: adding the cellulose derivative into water to obtain the aqueous solution of the cellulose derivative; Preferably, in step 2), the reaction conditions include: reaction temperature of 10-30° C., and reaction time of 1-24 h.

10. Use of the cellulose-based adhesive according to any one of claims 1 to 7 in the field of interface bonding.

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