CN109898364B - Graphene-based cigarette paper and preparation method thereof - Google Patents
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Abstract
The invention relates to graphene-based cigarette paper and a preparation method thereof, and belongs to the technical field of cigarette materials. Soaking graphene oxide in a solvent, performing ultrasonic treatment, adding a tobacco flavor, a humectant and a functional assistant into the obtained graphene oxide dispersion liquid, and uniformly mixing to obtain a graphene functional compound. Applying the graphene functional compound on the surface layer of the cigarette paper, and then drying to obtain graphene-based cigarette paper; or adding the obtained graphene functional compound in a papermaking modulation process, and then obtaining the graphene-based cigarette paper according to a conventional preparation process. The method can solve the problem of volatile loss of aroma carried by the cigarette paper, and can modify the smoke form of the cigarette and improve the sensory quality of the cigarette based on the property characteristics of the graphene. In addition, the graphene functional compound can be endowed with personalized patterns on the cigarette paper in a spraying/spin coating mode, so that the double perception experience of vision and smell of the cigarette is endowed while the cigarette fragrance/smoke is enriched and regulated.
Description
Technical Field
The invention belongs to the technical field of cigarettes, and particularly relates to graphene-based cigarette paper and a preparation method thereof.
Background
The cigarette paper is also called coil paper and is used for wrapping the cut tobacco of the cigarette, compared with other cigarette auxiliary materials, the cigarette paper has the greatest characteristic of participating in cigarette combustion, and not only generates physical change but also chemical change in the smoking process of the cigarette, and has larger influence on the smoking quality of the cigarette, so that the cigarette paper can be regarded as an important component of a cigarette leaf group, and the cigarette paper has a key effect on the influence on the smoking taste of the cigarette. Nowadays, the development of cigarette paper focuses on satisfying various functions for young consumers, such as satisfying the requirement of absorbing odor and providing exquisite appearance support for brand image, and developed countries such as the united states and europe even require that cigarette paper has certain fireproof function. It can be seen that the cigarette paper not only plays the role of wrapping the cut tobacco, but also bears more functional functions.
In the aspect of cigarette flavoring, the cigarette paper is used as a material which is synchronously combusted with a leaf group formula, and has very important function in the aspect of combustion and flavor release. At present, a plurality of aromatized cigarette papers are also used in products on the market of cigarette enterprises. However, the cigarette paper has the common characteristics that fragrant substances are easy to lose in the cigarette paper production and storage processes, the retention time of the fragrant substances is short, or the fragrant substances can only be endowed with a fragrant function generally, and cannot provide personalized visual effects at the same time. In addition, the paper making process of the cigarette paper is limited in that the cigarette paper needs to be subjected to a high-temperature drying link at last, so that volatile components are easily lost, and the quality of cigarette products is influenced.
Therefore, how to overcome the defects of the prior art is a problem to be solved urgently in the technical field of the graphene-based cigarette paper.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides graphene-based cigarette paper and a preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of graphene-based cigarette paper comprises the following steps:
soaking graphene oxide in a solvent for 0.5-2 h, and performing ultrasonic treatment to obtain a graphene oxide dispersion liquid with the mass concentration of 0.05-0.35 g/mL;
step (2), adding a tobacco flavor, a humectant and a functional assistant into the graphene oxide dispersion liquid obtained in the step (1), and uniformly mixing to obtain a graphene functional compound;
step (3), applying the graphene functional compound obtained in the step (2) on the surface layer of the cigarette paper, and then quickly drying at 110 ℃ to obtain the graphene-based cigarette paper;
or adding the graphene functional compound obtained in the step (2) in a papermaking modulation process, and then preparing cigarette paper according to a conventional process to obtain graphene-based cigarette paper;
in the step (2), the usage ratio of the graphene oxide dispersion liquid to the tobacco flavor to the humectant to the functional additive is 1-10L: 100-2000 g: 20-200 g: 5-30 g.
Further, in the step (1), the ultrasonic power is preferably 100W, and the time is preferably 0.5-1 h.
Further, in the step (1), the graphene oxide has a lamella size of 10 to 20 μm, a thickness of 2.0 to 4.0 nm, and a C/O ratio of 3: 1.
Further, in the step (1), it is preferable that the solvent is a mixture of one or more of water, ethanol and propylene glycol.
Further, preferably, in the step (2), the tobacco flavor is an extract of Yunnan arabica coffee, an extract of large plum, an extract of strawberry, an extract of rosa roxburghii tratt or an extract of tobacco; the humectant is one of glycerol, tobacco polysaccharide humectant and honey humectant.
Further, preferably, in the step (2), the functional assistant is one or a combination of several of sodium citrate, potassium tartrate, tea polyphenol, citric acid, lauric acid, dextran, sucrose ester, mannose and sodium alginate.
Further, in the step (3), the graphene functional composite is preferably added to the inner surface and/or the outer surface of the cigarette paper in a spin coating or spray coating manner to form a personalized pattern.
Further, in the step (3), the graphene functional composite obtained in the step (2) is preferably applied to the surface layer of the cigarette paper in an amount of 5-10 g/m2(ii) a And (3) adding the graphene functional compound obtained in the step (2) in a papermaking preparation process, wherein the addition amount is 0.5-10 wt% of the mass of the short fibers.
The graphene functional compound is applied to the surface layer of the cigarette paper, and then is quickly dried at 110 ℃, wherein the drying time is preferably 10-60 s.
The graphene functional compound is applied to the surface layer of the cigarette paper, and the adopted coating technology can be spin coating or spray coating and the like.
Adding the graphene functional compound obtained in the step (2) in a papermaking modulation procedure, and then preparing cigarette paper according to a conventional process, wherein the specific steps are as follows: adding the graphene functional compound into short fibers of the cigarette paper raw material in proportion, pulping and uniformly mixing; mixing with other raw materials, fillers and additives of the cigarette paper, and then feeding the mixture into a paper machine for papermaking.
Compared with the prior art, the invention has the beneficial effects that:
(1) the cigarette paper can be better loaded with sensory modification functional substances (tobacco flavor, humectant and additives) for cigarettes, so that the problem of volatile loss of the functional substances in the cigarette paper is solved;
(2) the graphene-based cigarette paper prepared by the method does not need to be provided with an independent processing workshop under the conventional storage condition and in the cigarette production process, so that the pollution of volatile components to the workshop environment and equipment is avoided; the preparation process is simple, repeated extraction, extra drying setting and other operations do not exist, the process waste is reduced, and the raw material cost and the operation cost are saved.
(3) The graphene material with proper sheet size and functionality is adopted, so that the structure and physicochemical characteristics suitable for application of cigarette paper are presented, and the graphene material is more suitable for loading target components. The graphene-based cigarette paper can prevent the volatilization of the fragrant substances of the cigarette paper in the circulation process and can effectively prolong the retention time of the fragrant substances of the spices.
(4) When the cigarette product prepared from the graphene-based cigarette paper is consumed, the cigarette paper can release the functional components of the loaded cigarette flavor through combustion, so that the cigarette has unique sensory quality, and the quality of the cigarette product is improved.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.
Example 1
(1) Weighing 500 g of graphene oxide, soaking the graphene oxide in 5L of deionized water/ethanol mixed solvent (V/V = 5: 1) for 2 h, and carrying out ultrasonic treatment in an ultrasonic device with the power of 100W for 0.5 h at room temperature to obtain uniformly dispersed graphene oxide dispersion liquid; wherein the size of a sheet layer of the graphene oxide is 10-20 mu m, the thickness is 2.0-4.0 nm, and the C/O is 3: 1;
(2) adding 50 g of glycerol humectant, 100 g of Yunnan arabica coffee extract and 5 g of antioxidant auxiliary agent tea polyphenol into the graphene oxide dispersion liquid obtained in the step (1), uniformly stirring for 1.5 h, and fully and uniformly mixing to obtain a graphene functional compound;
(3) spin-coating the graphene functional composite obtained in the step (2) on the surface layer of the cigarette paper, wherein the coating amount is 10 g/m of the graphene composite2And then drying at the high temperature of 110 ℃ for 1 min to obtain the graphene-based cigarette paper. According to the processing technology of the conventional cigarette paper, the cigarette product is applied after the upper rolling machine cuts and rolls the cigarette.
Compared with the conventional cigarette paper, sensory evaluation shows that the applied functional components for the cigarette enter the oral cavity of a consumer along with smoke in the cigarette burning and smoking process, so that the smoke fragrance amount is increased, the coffee fragrance and the tobacco fragrance are fused, the fragrance richness is increased, the smoke is ventilated, no obvious stimulation exists, and the quality of cigarette products is improved.
Example 2
(1) Weighing 350 g of graphene oxide, soaking the graphene oxide in 1L of deionized water/propylene glycol mixed solvent (V/V = 7/2) for 2 h, and carrying out ultrasonic treatment in an ultrasonic device with the power of 100W for 1 h at room temperature to obtain uniformly dispersed graphene oxide dispersion liquid; wherein the size of a sheet layer of the graphene oxide is 13-18 mu m, the thickness of the graphene oxide is 2.5-3.5 nm, and the ratio of C to O is 3: 1; (2) adding 10 g of combustion improver sodium citrate, 20 g of honey humectant, 500 g of large plum extract and 20 g of taste modifier citric acid into the graphene oxide dispersion liquid obtained in the step (1), uniformly stirring for 2 h, and fully and uniformly mixing to obtain a graphene functional compound;
(3) spraying the graphene compound obtained in the step (2) on the surface layer of the cigarette paper, wherein the coating weight is 5 g/m of the graphene compound2And then drying the cigarette paper at the high temperature of 110 ℃ for 30 s to obtain the graphene-based cigarette paper. According to the processing technology of the conventional cigarette paper, the cigarette product is applied after the upper rolling machine cuts and rolls the cigarette.
Compared with the conventional cigarette paper, sensory evaluation shows that the applied functional components for the cigarettes enter the oral cavity of a consumer along with smoke in the cigarette burning and smoking process, so that the cigarette fragrance quality is improved, the cigarette fragrance is enriched, the oral cavity has fresh and sweet feeling, the fragrance is clear, the moistening feeling is prominent, the smoking and smoking are smooth, and the cigarette product quality is improved.
Example 3
(1) Weighing a certain amount of 1 kg of graphene oxide, soaking the graphene oxide in 9L of deionized water/ethanol/propylene glycol (V/V = 6/1) for 2 h, and carrying out ultrasonic treatment in an ultrasonic device with the power of 100W at room temperature for 2.5 h to obtain a uniformly dispersed graphene oxide dispersion liquid; wherein the size of a sheet layer of the graphene oxide is 10-20 mu m, the thickness is 2.0-4.0 nm, and the C/O is 3: 1; (2) adding 2 kg of roxburgh rose extract, 20 g of combustion improver sodium citrate, 50 g of tobacco polysaccharide humectant and 10 g of sweet taste aid glucan into the graphene oxide dispersion liquid obtained in the step (1), stirring for 1.5 h, and fully and uniformly mixing to obtain a graphene functional compound;
(3) spraying the graphene composite obtained in the step (2) on the surface layer of the cigarette paper according to the designed auspicious cloud pattern, wherein the coating weight is 7 g/m of the graphene composite2And then drying at the high temperature of 110 ℃ for 10 s to obtain the graphene-based cigarette paper for application. According to the processing technology of the conventional cigarette paper, the cigarette product is applied after the upper rolling machine cuts and rolls the cigarette.
Compared with the conventional cigarette paper, sensory evaluation shows that the applied functional components for the cigarette enter the oral cavity of a consumer along with smoke in the burning and smoking process of the cigarette, so that the cigarette fragrance quality is improved, the fresh and sweet fragrance is obvious, and the harmony is good; the cigarette has fresh and natural fragrance, improves the sweetness and comfort of the smoke, has fresh and sweet effects, and improves the sensory quality of the cigarette product.
Example 4
(1) Weighing a certain amount of 500 g of graphene oxide, soaking the graphene oxide in 5L of deionized water/propylene glycol mixed solvent (V/V = 7/1) for 1 h, and carrying out ultrasonic treatment in an ultrasonic device with the power of 100W at room temperature for 0.8 h to obtain a uniformly dispersed graphene oxide dispersion liquid; wherein the size of a sheet layer of the graphene oxide is 15-20 mu m, the thickness is 3.0-4.0 nm, and the C/O is 3: 1;
(2) adding 1 kg of tobacco extract, 10 g of combustion improver potassium tartrate, 100 g of honey humectant and 15 g of dissolving aid sucrose ester into the graphene oxide dispersion liquid obtained in the step (1), stirring for 1 h, and fully and uniformly mixing to obtain a graphene compound;
(3) adding the graphene compound obtained in the step (2) in a modulation procedure in a papermaking process, and pulping and uniformly mixing the graphene functional compound and the short fibers of the cigarette paper raw material according to the adding proportion of 5 wt%. After mixing with other raw materials of hemp pulp, long fiber, filler, auxiliary agent and the like of the cigarette paper, the mixture is fed into a paper machine for papermaking processing. The obtained graphene-based functional cigarette paper is produced and processed according to the conventional paper making procedure, and is directly subjected to cigarette wrapping application on a cigarette making machine after being cut, so that the required cigarette product is prepared.
Compared with the conventional cigarette paper, sensory evaluation shows that the cigarette paper can release the functional components of the loaded cigarette flavor by burning the cigarette paper when the cigarette product prepared by the graphene-based cigarette paper is consumed, so that the smoke is mellow, the cigarette fragrance is full, the richness is increased, the irritation and the miscellaneous gas are slightly reduced, and the aftertaste and the miscellaneous gas are slightly improved.
Example 5
(1) Weighing a certain amount of 500 g of graphene oxide, soaking the graphene oxide in 1.5L of deionized water for 0.5 h, and carrying out ultrasonic treatment in an ultrasonic device with the power of 100W for 0.9 h at room temperature to obtain a uniformly dispersed graphene oxide dispersion liquid; wherein the size of a sheet layer of the graphene oxide is 10-15 mu m, the thickness is 2.0-2.5 nm, and the C/O is 3: 1;
(2) adding 200 g of tobacco polysaccharide humectant, 400 g of strawberry extract and 5 g of bonding aid sodium alginate into the graphene oxide dispersion liquid obtained in the step (1), stirring for 2 hours, and fully and uniformly mixing to obtain a graphene compound;
(3) adding the graphene compound obtained in the step (2) in a modulation process in a papermaking process, and pulping and uniformly mixing short fibers added into the cigarette paper raw material in the graphene functional compound according to the proportion of 10 wt%. After mixing with other raw materials of hemp pulp, long fiber, filler, auxiliary agent and the like of the cigarette paper, the mixture is fed into a paper machine for papermaking processing. The obtained graphene-based functional cigarette paper is produced and processed according to the conventional paper making procedure, and is directly subjected to cigarette wrapping application on a cigarette making machine after being cut, so that the required cigarette product is prepared.
Compared with the conventional cigarette paper, sensory evaluation shows that the cigarette paper prepared by the graphene-based cigarette paper can release the functional components of the loaded tobacco flavor after being combusted, and the functional components enter the oral cavity of a consumer along with smoke, so that the cigarette paper has the faint scent which is harmonious with the cigarette fragrance, the richness of the cigarette fragrance is increased, the sensory quality of the smoke which generates body fluid and returns sweet and is clear and moist is obviously improved, the irritation and the dry feeling are reduced, and the cigarette paper shows better smoking comfort
Example 6
(1) Weighing a certain amount of 500 g of graphene oxide, soaking the graphene oxide in 10L of deionized water for 0.5 h, and carrying out ultrasonic treatment for 1 h at room temperature in an ultrasonic device with the power of 100W to obtain uniformly dispersed graphene oxide dispersion liquid; wherein the size of a sheet layer of the graphene oxide is 15-20 mu m, the thickness is 3.0-4.0 nm, and the C/O is 3: 1;
(2) adding 200 g of tobacco polysaccharide humectant, 100 g of tobacco extract, 15 g of bonding aid sodium alginate and 10 g of taste modifier mannose into the graphene oxide dispersion liquid obtained in the step (1), stirring for 2 hours, and fully and uniformly mixing to obtain a graphene compound;
(3) adding the graphene compound obtained in the step (2) in a modulation process in a papermaking process, and pulping and uniformly mixing short fibers added into the cigarette paper raw material in the graphene functional compound according to the proportion of 0.5 wt%. After mixing with other raw materials of hemp pulp, long fiber, filler, auxiliary agent and the like of the cigarette paper, the mixture is fed into a paper machine for papermaking processing. The obtained graphene-based functional cigarette paper is produced and processed according to the conventional paper making procedure, and is directly subjected to cigarette wrapping application on a cigarette making machine after being cut, so that the required cigarette product is prepared.
Compared with the conventional cigarette paper, sensory evaluation shows that the cigarette paper can release the functional components of the loaded tobacco flavor by burning the cigarette paper when the cigarette product prepared by the graphene-based cigarette paper is consumed, and the cigarette paper enters the oral cavity of a consumer along with smoke and is harmonious with the cigarette fragrance, so that the smoke concentration of the cigarette is increased, the cigarette has the advantages of little fluid generation and sweet return, the fragrance quality and the fragrance quantity are improved, the sweet aroma and the roasted aroma are prominent, the aftertaste is clean, and the smoking quality and the smoking satisfaction of the cigarette are improved.
The graphene-based cigarette paper obtained in examples 1 to 6 was prepared into test cigarette cigarettes, and the cigarette cigarettes prepared from ordinary cigarette paper were used as a comparative example, and were subjected to equilibrium at 22 ± 1 ℃ and a relative humidity of 60 ± 2% for 48 hours, to perform sensory evaluation of cigarette smoking. The results are shown in Table 1.
Table 1 comparative and sensory evaluation of cigarettes made with graphene-based cigarette paper
As can be seen from Table 1, compared with the conventional cigarette paper, the functional cigarette paper of the invention can obviously improve the aroma quality of the cigarette, reduce the stimulation of smoke, improve aftertaste and miscellaneous gas and has better smoking comfort as a whole.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A preparation method of graphene-based cigarette paper is characterized by comprising the following steps:
soaking graphene oxide in a solvent for 0.5-2 h, and performing ultrasonic treatment to obtain a graphene oxide dispersion liquid with the mass concentration of 0.05-0.35 g/mL;
step (2), adding a tobacco flavor, a humectant and a functional assistant into the graphene oxide dispersion liquid obtained in the step (1), and uniformly mixing to obtain a graphene functional compound;
step (3), applying the graphene functional compound obtained in the step (2) on the surface layer of the cigarette paper, and then quickly drying at 110 ℃ to obtain the graphene-based cigarette paper;
or adding the graphene functional compound obtained in the step (2) in a papermaking modulation process, and then preparing cigarette paper according to a conventional process to obtain graphene-based cigarette paper;
in the step (2), the usage ratio of the graphene oxide dispersion liquid to the tobacco flavor to the humectant to the functional additive is 1-10L: 100-2000 g: 20-200 g: 5-30 g;
in the step (1), the size of a sheet layer of the graphene oxide is 10-20 mu m, the thickness is 2.0-4.0 nm, and the C/O ratio is 3: 1;
in the step (2), the tobacco flavor is Yunnan arabica coffee extract, large plum extract, roxburgh rose extract, strawberry extract or tobacco extract, and the humectant is one of glycerol, tobacco polysaccharide humectant and honey humectant.
2. The preparation method of the graphene-based cigarette paper according to claim 1, wherein in the step (1), the ultrasonic power is 100W, and the time is 0.5-1 h.
3. The preparation method of graphene-based cigarette paper according to claim 1, wherein in the step (1), the solvent is a mixture of one or more of water, ethanol and propylene glycol.
4. The preparation method of the graphene-based cigarette paper according to claim 1, wherein in the step (2), the functional auxiliary agent is one or a combination of more of sodium citrate, potassium tartrate, tea polyphenol, citric acid, lauric acid, dextran, sucrose ester, mannose and sodium alginate.
5. The preparation method of the graphene-based cigarette paper according to claim 1, wherein in the step (3), the graphene functional composite is added to the inner surface and/or the outer surface of the cigarette paper in a spin coating or spray coating manner to form a personalized pattern.
6. The preparation method of the graphene-based cigarette paper according to claim 1, wherein in the step (3), the graphene functional composite obtained in the step (2) is applied to the surface layer of the cigarette paper in an amount of 5-10 g/m2(ii) a Or adding the graphene functional composite in a papermaking preparation process, pulping and uniformly mixing the graphene functional composite and short fibers in the cigarette paper raw material, wherein the adding amount of the graphene functional composite is 0.5-10 wt% of the short fibers.
7. A graphene-based cigarette paper, characterized in that the graphene-based cigarette paper is prepared by the preparation method according to any one of claims 1 to 6.
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| CN111567870B (en) * | 2020-06-02 | 2023-05-30 | 四川三联新材料有限公司 | Flavoring and moisturizing tube for heating cigarettes and preparation method thereof |
| CN111743192B (en) * | 2020-07-10 | 2022-05-17 | 湖北中烟工业有限责任公司 | Preparation method of geraniol-graphene oxide slow-release heat-conducting composite material for cigarettes |
| CN113951532B (en) * | 2020-07-20 | 2023-03-31 | 福建中烟工业有限责任公司 | Method for preparing sepiolite composite paper, obtained paper and application thereof |
| CN112030608B (en) * | 2020-08-27 | 2023-06-09 | 重庆中烟工业有限责任公司 | Cigarette paper with improved taste and preparation method thereof |
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