CN117000210A - Functional material for adsorbing cigarette smoke tar and preparation method thereof - Google Patents

Functional material for adsorbing cigarette smoke tar and preparation method thereof Download PDF

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Publication number
CN117000210A
CN117000210A CN202311179910.6A CN202311179910A CN117000210A CN 117000210 A CN117000210 A CN 117000210A CN 202311179910 A CN202311179910 A CN 202311179910A CN 117000210 A CN117000210 A CN 117000210A
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China
Prior art keywords
cigarette smoke
functional material
tar
adsorbing
filter tip
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CN202311179910.6A
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Chinese (zh)
Inventor
张亚刚
曾婷
刘艳霞
赵麟
项玮
蒋小丽
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Chengdu Huastrontium Terbium Technology Co ltd
University of Electronic Science and Technology of China
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Chengdu Huastrontium Terbium Technology Co ltd
University of Electronic Science and Technology of China
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Priority to CN202311179910.6A priority Critical patent/CN117000210A/en
Publication of CN117000210A publication Critical patent/CN117000210A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28023—Fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention relates to the technical field of cigarette filtration, in particular to a functional material for adsorbing cigarette smoke tar and a preparation method thereof, wherein the method comprises the steps of constructing a micro-nano structure rough surface at normal temperature and normal pressure, introducing chemical groups with low surface energy to carry out hydrophobic modification on cotton fibers to obtain long carbon chain alkyl alkoxy silane with in-situ grown surface and coating SiO 2 A hydrophobic cotton fiber functional composite of nano particles. The invention adopts the reaction condition temperatureAnd the hydrophobic oleophylic cotton fiber functional composite material with stable structure is prepared by a method with simple operation process. The prepared material does not adsorb or less adsorb water, can selectively adsorb tar components comprising polycyclic aromatic hydrocarbon harmful substances, thereby reducing harmful components inhaled by smokers, simultaneously not affecting smoking experience, improving the palatability of the filter tip, and having great application value and market prospect in the technical field of cigarette filtration.

Description

Functional material for adsorbing cigarette smoke tar and preparation method thereof
Technical Field
The invention relates to the technical field of cigarette filtration, in particular to a functional material for adsorbing cigarette smoke tar and a preparation method thereof.
Background
The smoke produced by the combustion of cigarettes contains thousands of compounds, the most predominant of which are moisture, nicotine, and tar. In addition to nicotine, it is generally considered that harmful components in cigarette smoke are mainly concentrated in tar, especially polycyclic aromatic hydrocarbon in tar, contain various carcinogens, and can directly stimulate tracheal and bronchial mucosa to inhibit cilia movement, thereby causing tracheobronchitis. After the tar is sucked into the lung, the alveolar wall is damaged, loses elasticity, swells and breaks to form emphysema; is adhered to the surface of respiratory mucosa, and can induce abnormal proliferation of cells to form cancer after excessive accumulation and long time. In addition, the greater the moisture content in the cigarette smoke, the less irritating and uncomfortable the smoke will be.
In the past researches, the adsorption material of the polycyclic aromatic hydrocarbon mainly comprises active carbon, biochar, zeolite, mesoporous silica, graphene, carbon nano-tube, metal organic framework material and the like. These materials all have the advantages of high specific surface area, excellent pore structure and the like. However, the traditional adsorption material has no selective adsorption capacity, so that the tar can be adsorbed, and simultaneously, the moisture and the nicotine can be adsorbed, so that the taste of the cigarette is reduced, and the cigarette is not welcomed by consumers.
Over the past few decades, cigarette manufacturers have been trying to study a variety of filter designs to reduce toxic and carcinogens in cigarette smoke. The main component of cigarette filter tip in the market is cellulose acetate, which is a chemically modified high molecular polymer obtained by esterification reaction of cellulose molecules and acetic anhydride. The cellulose acetate used for the cigarette filter tip has the advantages of no toxicity, no smell, impact resistance, oil resistance, no static electricity, small tension, strong adsorption force, good elasticity, good heat resistance and the like. However, at present, cellulose acetate still has the problems of poor thermal stability, low mechanical strength, easy membrane pollution, difficult degradation, and adsorption of a large amount of water in the filtration process, so that researchers are striving to find alternative materials or improve the alternative materials.
Such as; in chinese patent application publication No. CN113647676a, a degradable filter rod for alginate fiber cigarette and a preparation method thereof are disclosed, which is based on alginate fiber to prepare filter tip for cigarette; compared with the traditional acetate fiber cigarette filter stick, the method uses the natural polysaccharide fiber to prepare the cigarette filter stick, and the alginic acid fiber of the natural polysaccharide has natural degradability, can be naturally degraded in the environment, and reduces the pollution problem of waste gas cigarette ends to the environment.
Another example is: in the Chinese patent application with publication number of CN116114910A, a novel cigarette filter tip with catalytic purification function and a manufacturing method thereof are disclosed, the filter tip prepared by the method has the function of filtering tar, and also has the functions of adsorbing and catalytically reacting part of toxic and harmful gases therein, so that the occurrence probability of diseases induced by the filter tip is reduced, and the health of human bodies is promoted; the method mainly comprises the steps of directly growing a layer of three-dimensional catalyst material with small size, large specific surface area and high adsorption and catalytic reaction efficiency on the surface of a flexible wire mesh, then rolling/stacking the three-dimensional catalyst material into a cylindrical shape, putting the cylindrical catalyst material into the middle of a cigarette filter, and completely converting CO to play a role in catalytic filtration of toxic and harmful gases.
And the following steps: the Chinese patent application with publication number of CN116114910A discloses a cigarette filter material and a preparation method thereof, and is characterized in that the cigarette filter material is composed of the following raw materials: 58-65% of bamboo fiber filaments, 30-40% of phyllanthus niruri extract liquid and 2-5% of glutinous rice glue, wherein the sum of the volume percentages of the raw materials is 100%; the preparation method comprises the following steps: 1) Spraying phyllanthus urinaria extract on the bamboo fiber filaments; 2) Drying; 3) Spraying glutinous rice glue; 4) And (5) drying again. The adsorption quantity of the cigarette filter tip material prepared by the method to tar is 10.4-10.9 mg/count, which is equivalent to the adsorption quantity of acetate fiber filter tip and polypropylene fiber filter tip to tar of 10.2 mg/count and 10.1 mg/count.
It is apparent that although the above-mentioned prior art solves some problems of cigarette filtration from different angles, it is not mentioned how to reduce adsorption of moisture during filtration and reduce interference feeling of smokers during smoking while achieving targeted absorption of main harmful components such as polycyclic aromatic hydrocarbon in tar.
Disclosure of Invention
In view of the above, the invention provides a functional material for adsorbing cigarette smoke tar and a preparation method thereof, so as to solve the problem that the harm of cigarettes to human health and smoking experience of smokers cannot be reduced in the prior art.
In order to solve the problems, the invention adopts the following technical scheme:
a functional material for adsorbing cigarette smoke tar comprises cotton fiber, micro-nano structured rough surface constructed on the surface of the fiber, and long carbon chain alkyl group introduced with low surface energy.
A preparation method of a functional material for adsorbing cigarette smoke tar comprises the following steps:
step 1, adding tetraethyl orthosilicate and a long carbon chain alkyl alkoxy silane modifier into absolute ethyl alcohol, and stirring and uniformly mixing; dropwise adding catalyst ammonia water under magnetic stirring to adjust the pH value to be alkaline to prepare a hydrophobic functional modifier solution; the volume ratio of the tetraethyl orthosilicate to the long carbon chain alkyl alkoxy silane is 1:1, the volume ratio of the catalyst to the ethanol is 1:10;
step 2, completely soaking cotton fibers in the hydrophobic functional modifier solution, soaking for 2-16 hours at room temperature, and taking out; repeatedly rinsing with ethanol to remove unreacted raw materials, and drying the modified cotton fiber in a baking oven at 50-80 ℃ to obtain the functional material for adsorbing cigarette smoke tar, wherein the material has a micro-nano structure rough surface and in-situ growth low surface energy chemical groups.
Further, the long carbon chain alkyl alkoxy silane modifier is dodecyl trimethoxy silane, hexadecyl trimethoxy silane, octadecyl trimethoxy silane or 1H,2H and 2H perfluoro octyl triethoxy silane.
Furthermore, the invention provides application of the functional material for adsorbing cigarette smoke tar in a cigarette smoke filtration product.
The main raw material in the functional material for adsorbing cigarette smoke tar is cotton fiber, and has the advantages of large specific surface area, high porosity, wide source, low price, light weight, degradability and the like. The micro-nano structured rough surface is constructed after hydrophobic modification, and the low surface energy chemical groups grow and adhere to the fiber surface in situ in a covalent bond form, so that the corresponding cigarette smoke harmful ingredient adsorption functional material is formed, the moisture absorption is effectively reduced, and the absorption effect on tar ingredients in smoke is improved. Meanwhile, the preparation process is simple and convenient, the hydrophobic modification process has no influence on the porosity, toughness and the like of the cotton fiber, the attachment is very firmly combined with the cotton fiber, and slag can not be dropped. According to the shape similar to that of acetate fiber, the acetate fiber can be directly replaced for making cigarette filter tip, and the cigarette filter tip is applied to the normal smoking process, so that the harmful components inhaled by smokers are reduced, the smoking experience is not affected, and the use compliance of the filter tip is improved.
Compared with the prior art, the invention has the following beneficial effects:
1. the preparation method of the functional material for adsorbing cigarette smoke tar provided by the invention has the advantages of simple operation, low raw material cost, mild reaction condition, short production period, no need of large-scale equipment and special instruments, and realization of industrialized mass production.
2. The functional material for adsorbing cigarette smoke tar prepared by the method can selectively and effectively adsorb the cigarette smoke tar, is suitable for the technical field of cigarette filtration, and has good adsorption performance and high selectivity; the filter tip has the advantages that moisture is not adsorbed or is less adsorbed, interference feeling during smoking is not generated, smoking experience feeling is greatly reserved, and palatability of the filter tip is improved.
3. The functional material for adsorbing cigarette smoke tar prepared by the method can be also used in the environmental protection fields such as oil-water separation and the like.
Drawings
FIG. 1 is a photograph showing the contact angle of water of the sample prepared in example 1;
FIG. 2 is an electron micrograph of the cotton fiber raw material used in example 1;
FIG. 3 is an electron micrograph of the sample obtained in example 1.
Detailed Description
The invention will now be further illustrated with reference to specific examples, which are given solely for the purpose of illustration and are not to be construed as limiting the invention. The test specimens and test procedures used in the examples below included the following:
example 1
1mL of tetraethyl orthosilicate (TEOS,) and 1mL of dodecyltrimethoxysilane (DTMS,) were added to 80mL of ethanol, and 8mL of aqueous ammonia was added dropwise with magnetic stirring to prepare a hydrophobic functional modifier solution. 3.0717g of absorbent cotton balls were then soaked in the above solution at room temperature for 12 hours. Finally, rinsing with ethanol, and drying at 60 ℃ to obtain 3.1919g of functional material sample for adsorbing cigarette smoke tar.
As shown in FIG. 3, the microstructure of the sample obtained in this example, as can be seen from a comparison of FIG. 3 and FIG. 2, the diameter of the modified cotton fiber is significantly increased, and the surface is rough and has SiO 2 The nanoparticles are attached. The sample of the embodiment has stronger adsorption capacity.
The contact angle of the functional material sample obtained in this example with water was 154.1±2.5°, as shown in table 1. The adsorption performance test is carried out by adopting the filter tip manufactured by the method, the test result is shown in table 2, the adsorption amount of the total particulate matters in the cigarette smoke is 1.46 times of that of the cellulose acetate filter tip, the adsorption amount of tar in the cigarette smoke is 1.5 times of that of the cellulose acetate filter tip, the adsorption amount of 16 polycyclic aromatic hydrocarbons in the cigarette smoke is 1.11 times of that of the cellulose acetate filter tip, and the adsorption amount of nicotine in the cigarette smoke is reduced by 55.86 percent compared with that of the cellulose acetate filter tip.
TABLE 1 contact Angle test results for functional Material samples obtained in example 1
Hydrophobic cotton fiber material Contact Angle (CA)
Cellulose acetate filter tip 0
Example 1 154.1±2.5
TABLE 2 adsorption Performance test results for filters made with the functional Material samples obtained in EXAMPLE 1
Example 2
To 80mL of ethanol, 1mL of tetraethyl orthosilicate (TEOS) and 1mL of Hexadecyltrimethoxysilane (HDTMS) were added, and 8mL of aqueous ammonia was added dropwise with magnetic stirring to prepare a hydrophobic functional modifier solution. 3.1031g of absorbent cotton balls were then soaked in the above solution at room temperature for 8 hours. Finally, ethanol is used for rinsing, and drying is carried out at 60 ℃ to obtain 3.2565g of functional material sample for adsorbing cigarette smoke tar.
The contact angle of the functional material sample obtained in this example with water was 152.6±2.7°, as shown in table 3. The adsorption performance test is carried out by adopting the filter tip manufactured by the method, the test result is shown in table 4, the adsorption amount of the total particulate matters in the cigarette smoke is 1.49 times of that of the cellulose acetate filter tip, the adsorption amount of tar in the cigarette smoke is 1.53 times of that of the cellulose acetate filter tip, the adsorption amount of 16 polycyclic aromatic hydrocarbons in the cigarette smoke is 1.41 times of that of the cellulose acetate filter tip, and the adsorption amount of nicotine in the cigarette smoke is reduced by 57.51 percent compared with that of the cellulose acetate filter tip.
TABLE 3 contact angle test results for functional Material samples obtained in example 2
Hydrophobic cotton fiber material Contact Angle (CA)
Cellulose acetate filter tip 0
Example 2 152.6±2.7
TABLE 4 adsorption Performance test results for filters made with the functional Material samples obtained in EXAMPLE 2
Example 3
To 80mL of ethanol, 1mL of tetraethyl orthosilicate (TEOS) and 1mL of octadecyl trimethoxysilane (ODTMS) were added, and 8mL of aqueous ammonia was added dropwise with magnetic stirring to prepare a hydrophobic functional modifier solution. 3.1088g of absorbent cotton balls were then soaked in the above solution at room temperature for 8 hours. Finally, rinsing with ethanol, and drying at 60 ℃ to obtain 3.2256g of functional material sample for adsorbing cigarette smoke tar.
The contact angle of the functional material sample obtained in this example with water was 154.5±2.6°, as shown in table 5. The adsorption performance test is carried out by adopting the filter tip manufactured by the method, the test result is shown in table 6, the adsorption amount of the total particulate matters in the cigarette smoke is 1.48 times of that of the cellulose acetate filter tip, the adsorption amount of tar in the cigarette smoke is 1.52 times of that of the cellulose acetate filter tip, the adsorption amount of 16 polycyclic aromatic hydrocarbons in the cigarette smoke is 1.31 times of that of the cellulose acetate filter tip, and the adsorption amount of nicotine in the cigarette smoke is reduced by 50.33 percent compared with that of the cellulose acetate filter tip.
TABLE 5 contact Angle test results for functional Material samples obtained in example 3
Hydrophobic cotton fiber material Contact Angle (CA)
Cellulose acetate filter tip 0
Example 3 154.5±2.6
TABLE 6 adsorption Performance test results for filters made with the functional Material samples obtained in EXAMPLE 3
Example 4
To 80mL of ethanol were added 1mL of tetraethyl orthosilicate (TEOS) and 1mL of 1H, 2H-Perfluorooctyltriethoxysilane (PFOES), and 8mL of aqueous ammonia was added dropwise with magnetic stirring to prepare a hydrophobic functional modifier solution. 3.0485g of absorbent cotton balls were then soaked in the above solution at room temperature for 6 hours. Finally, ethanol is used for rinsing, and drying is carried out at 60 ℃ to obtain 3.0495g of functional material sample for adsorbing cigarette smoke tar.
The contact angle of the functional material sample obtained in this example with water was 141.7 ±3.5°, as shown in table 7. The adsorption performance test is carried out by adopting the filter tip manufactured by the method, the test result is shown in table 8, the adsorption amount of the total particulate matters in the cigarette smoke is 1.57 times of that of the cellulose acetate filter tip, the adsorption amount of tar in the cigarette smoke is 1.61 times of that of the cellulose acetate filter tip, the adsorption amount of 16 polycyclic aromatic hydrocarbons in the cigarette smoke is 1.16 times of that of the cellulose acetate filter tip, and the adsorption amount of nicotine in the cigarette smoke is reduced by 56.17 percent compared with that of the cellulose acetate filter tip.
TABLE 7 contact Angle test results for functional Material samples obtained in example 4
Hydrophobic cotton fiber material Contact Angle (CA)
Cellulose acetate filter tip 0
Example 4 141.7±3.5
TABLE 8 adsorption Performance test results for filters made with the functional Material samples obtained in EXAMPLE 4
Performance test:
as is clear from the above examples 1-4, the water contact angle of the functional material samples prepared according to the method of this example is greater than 140 degrees, wherein the fluorine-free long carbon chain alkyl alkoxy silane materials are used for modification in examples 1-3, and the water contact angle of the obtained functional material samples is greater than 150 degrees, and the results are shown in FIG. 1, tables 1, 3, 5 and 7.
The functional material samples obtained in each example were subjected to simulated smoking experiments. From each example, a proper amount of functional material was weighed, and a control experiment was performed to simulate a commercial acetate filter tip to which a cigarette was attached, and to a commercial acetate fiber of the same specification from which the outer paper of the filter tip was removed.
The method for measuring moisture adsorption comprises the following steps: a simulated smoking experiment was performed with 20 cigarettes each of the commercially available acetate filter cigarettes, 20 cigarettes each of the example 4 group, using a self-made smoking device, with a total puff time of 3 minutes for each puff at 5 second intervals. And weighing immediately after the smoking is finished to obtain the total adsorption quantity of the filter tip material on the total particulate matters of the cigarette smoke. And then extracting the adsorbate by using a solvent, and measuring the water content adsorbed in the filter tip by gas chromatography analysis.
The method for measuring the adsorption of the polycyclic aromatic hydrocarbon comprises the following steps: a simulated smoking experiment was performed with 20 cigarettes each of the commercially available acetate filter cigarettes, 20 cigarettes each of the example 4 group, using a self-made smoking device, with a total puff time of 3 minutes for each puff at 5 second intervals. And weighing immediately after the smoking is finished to obtain the total adsorption quantity of the filter tip material on the total particulate matters of the cigarette smoke. And then extracting the adsorbate by using a solvent, and measuring the content of the polycyclic aromatic hydrocarbon adsorbed in the filter tip by gas chromatography-mass spectrometry analysis.
Nicotine adsorption assay method: a simulated smoking experiment was performed with 20 cigarettes each of the commercially available acetate filter cigarettes, 20 cigarettes each of the example 4 group, using a self-made smoking device, with a total puff time of 3 minutes for each puff at 5 second intervals. And weighing immediately after the smoking is finished to obtain the total adsorption quantity of the filter tip material on the total particulate matters of the cigarette smoke. And then extracting the adsorbate by using a solvent, and measuring the content of nicotine adsorbed in the filter tip by gas chromatography-mass spectrometry analysis.
Tar adsorption determination method: according to national standard GB/T19609-2004, m of the people's republic of China Tar oil ＝m Total particulate matter -m Water and its preparation method -m Nicotine 。
As can be seen from tables 2, 4, 6 and 8, the filter tip material prepared from the hydrophobic cotton fiber has the tar adsorption amount which is obviously higher than that of the commercial cellulose acetate filter tip, and the tar adsorption amount is improved by more than 50%. Compared with the commercial cellulose acetate filter tip, the adsorption quantity of nicotine of the filter tip material is reduced by more than 50%, which is obviously lower than that of the commercial cellulose acetate filter tip, so that the smoking experience of a smoker is not affected, the smoker can obtain the same experience as the original experience only by sucking half of the smoke quantity, the effect of increasing the adsorption quantity of tar by more than 50% by combining the filter tip material is further achieved, and the harm to the health of the smoker is greatly reduced.
The functional material for adsorbing cigarette smoke tar provided by the embodiment utilizes the characteristic that cotton fibers can adsorb harmful components of cigarette tar; is prepared by carrying out hydrophobic modification on the sexual cotton fiber. The finished product contains rich natural plant cellulose, and the components are safe and healthy and have large adsorption selectivity and adsorption capacity. The cotton fiber is used as a raw material, has the advantages of wide source and full energy utilization, and can provide different application scenes. It should be noted that, if the specific conditions for the experiment are not specified in the examples, the conditions are usually conventional or recommended by the reagent company; reagents, consumables, etc. used in the examples described below are commercially available unless otherwise specified.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (4)

1. A functional material for adsorbing cigarette smoke tar, comprising cotton fibers, characterized in that: the micro-nano structure constructed on the surface of the fiber has a rough surface and introduces long carbon chain alkyl groups with low surface energy.
2. The preparation method of the functional material for adsorbing cigarette smoke tar is characterized by comprising the following steps of:
step 1, adding tetraethyl orthosilicate and a long carbon chain alkyl alkoxy silane modifier into absolute ethyl alcohol, and stirring and uniformly mixing; dropwise adding catalyst ammonia water under magnetic stirring to adjust the pH value to be alkaline to prepare a hydrophobic functional modifier solution; the volume ratio of the tetraethyl orthosilicate to the long carbon chain alkyl alkoxy silane is 1:1, the volume ratio of the catalyst to the ethanol is 1:10;
step 2, completely soaking cotton fibers in the hydrophobic functional modifier solution, soaking for 2-16 hours at room temperature, and taking out; and (3) repeatedly rinsing with ethanol, and then placing the modified cotton fibers into a baking oven at the temperature of between 50 and 80 ℃ for baking to obtain the functional material for adsorbing the cigarette smoke tar, wherein the material has a micro-nano structure rough surface and in-situ growth low-surface energy chemical groups.
3. A method for preparing a functional material for adsorbing cigarette smoke tar as claimed in claim 2, wherein: the long carbon chain alkyl alkoxy silane modifier is dodecyl trimethoxy silane, hexadecyl trimethoxy silane, octadecyl trimethoxy silane or 1H, 2H-perfluoro octyl triethoxy silane.
4. A method for preparing a functional material for adsorbing cigarette smoke tar as claimed in claim 2 or 3, and the use of the prepared functional material in cigarette smoke filtration products.
CN202311179910.6A 2023-09-13 2023-09-13 Functional material for adsorbing cigarette smoke tar and preparation method thereof Pending CN117000210A (en)

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Application Number Priority Date Filing Date Title
CN202311179910.6A CN117000210A (en) 2023-09-13 2023-09-13 Functional material for adsorbing cigarette smoke tar and preparation method thereof

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Application Number Priority Date Filing Date Title
CN202311179910.6A CN117000210A (en) 2023-09-13 2023-09-13 Functional material for adsorbing cigarette smoke tar and preparation method thereof

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CN117000210A true CN117000210A (en) 2023-11-07

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