CN108576921B

CN108576921B - Composite material for reducing phenol release amount in smoke and preparation method and application thereof

Info

Publication number: CN108576921B
Application number: CN201810235718.7A
Authority: CN
Inventors: 王晋; 张涛; 孔维松; 张承明; 刘志华; 何沛; 刘春波; 杨光宇; 李雪梅
Original assignee: China Tobacco Yunnan Industrial Co Ltd
Current assignee: China Tobacco Yunnan Industrial Co Ltd
Priority date: 2018-03-21
Filing date: 2018-03-21
Publication date: 2021-02-02
Anticipated expiration: 2038-03-21
Also published as: CN108576921A

Abstract

The invention relates to a composite material for reducing the release amount of phenol in smoke and a preparation method and application thereof, wherein the preparation method comprises the following steps: step (1), preparing a polymer solution; step (2), preparing a surfactant solution; and (3) preparing the composite material. The invention effectively increases the contact area of PVP and the flue gas and improves the adsorption efficiency and the capacity of the PVP on phenol in the flue gas by compounding the PVP and the activated carbon. The invention can quickly and selectively reduce the phenol content in the smoke, obviously reduce the phenol content in the smoke, simultaneously has no obvious influence on the smoking taste of the cigarette, and simultaneously improves the irritation. In addition, the invention has simple preparation and low cost.

Description

Composite material for reducing phenol release amount in smoke and preparation method and application thereof

Technical Field

The invention relates to a composite material, in particular to a composite material for reducing the release amount of phenol in smoke, and also relates to a preparation method and application thereof, belonging to the field of tobacco.

Background

From the beginning of the 20 th century and the 50 th era, the British Royal medical society reports official reports that smoking harms health for the first time to the present, and smoking and health problems are highly valued by governments, tobacco industries and medical circles of various countries. In recent years, under the positive impetus of the World Health Organization (WHO), many national governments and various anti-smoke groups, the tobacco regulatory framework convention established by the WHO not only stipulates that effective legislation, administration and other measures are to be taken and implemented by the governments to prevent and reduce tobacco consumption, nicotine addiction, tobacco smoke exposure and the like, but also requires restrictions on the components of tobacco products. Under the background, cigarette products at home and abroad gradually develop towards low-tar and low-harm cigarettes.

The phenol compounds in the cigarette mainstream smoke not only have strong stimulation effect on skin and respiratory mucosa, but also have potential harm to human bodies. The selective reduction of harmful components in cigarette smoke by using functional materials is one of the important subjects in the field of tobacco science research.

Polyvinylpyrrolidone (PVP) has a molecular structure with strong polarity and amide groups which easily form hydrogen bonds, and the O atoms and N atoms in the molecular structure are typical coordination atoms which have the capability of forming complexes with certain metals, so that PVP can form solid complexes with a plurality of substances, particularly compounds containing hydroxyl, carboxyl, amino and active hydrogen atoms thereof.

However, the time for the smoke to pass through the filter is very short, and meanwhile, the components in the smoke are mixed together and pass through the filter in the form of aerosol, and the existing additives cannot be in sufficient contact with the smoke, so that the adsorption efficiency and capacity of harmful components are influenced. The existing additive can not quickly and selectively absorb phenol, and can not effectively remove harmful substances in smoke, particularly phenol, except for improving odor absorption or irritation, and the preparation process is complex.

Disclosure of Invention

In order to solve the problems, the invention provides a preparation method of a composite material for reducing the release amount of phenol in smoke, and also provides a surface modification material prepared by the method and application thereof, wherein the material has a remarkable reduction effect on the phenol in the smoke.

The purpose of the invention is realized by the following technical scheme:

a preparation method of a composite material for reducing the release amount of phenol in smoke comprises the following steps:

step (1), preparation of Polymer solution

Adding the polymer into a solvent, and uniformly stirring to obtain a polymer solution with the concentration of 0.1-10 wt%; the polymer is one or more of polyvinylpyrrolidone with molecular weight of 1000-1000000 and vinylpyrrolidone-maleic acid copolymer;

step (2), preparation of surfactant solution

Adding a surfactant into a solvent, and uniformly stirring to obtain a surfactant solution with the concentration of 1-30 wt%;

step (3) preparation of composite material

Adding activated carbon into the surfactant solution obtained in the step (2), performing ultrasonic treatment for 5-20min, taking out, draining, wherein the mass ratio of the added activated carbon to the surfactant solution is 1: 10-100 parts of; and then adding the mixture into the polymer solution obtained in the step (1), wherein the mass ratio of the added activated carbon to the added polymer solution is 1: performing ultrasonic treatment for 5-30min for 10-100 min, taking out and drying to obtain the composite material.

Further, in the step (1), the molecular weight is 5000-.

Further, the surfactant is one or more of polyethylene glycol, sodium fatty acid, sodium dodecyl sulfate, sodium laurate, sodium oleate and span and food-grade spittle temperature.

Further, the activated carbon is one of wood activated carbon, shell activated carbon and coal activated carbon.

Further, the solvent in the step (1) and the step (2) is one of water, ethanol, propylene glycol, glycerol and glycerol triacetate.

The invention relates to a surface modified material obtained by the preparation method.

The surface modification material is added into a filter tip in an amount of 10-100 mg.

Compared with the prior art, the invention has the following beneficial effects:

the invention effectively increases the contact area of PVP and the flue gas and improves the adsorption efficiency and the capacity of the PVP on phenol in the flue gas by compounding the PVP and the activated carbon. The invention can quickly and selectively reduce the phenol content in the smoke, obviously reduce the phenol content in the smoke, simultaneously has no obvious influence on the smoking taste of the cigarette, and simultaneously improves the irritation. In addition, the invention has simple preparation and low cost.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments, and it is obvious that the described embodiments are only a part of examples of the present invention, and not all examples. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Example 1

The preparation method of the composite material for reducing the release amount of phenol in smoke in the embodiment is carried out as follows:

adding 3g of coconut shell activated carbon into 50g of 4 wt% polyethylene glycol-water solution, performing ultrasonic treatment for 10min, taking out, draining, adding into 60g of prepared 5 wt% polymer-water solution, wherein the polymer is a vinyl pyrrolidone-maleic acid copolymer with the molecular weight of 10000, performing ultrasonic treatment for 5min uniformly, taking out, and drying to obtain the required polyvinylpyrrolidone-activated carbon composite material product.

50mg of the above composite material was added to a cigarette filter rod.

And (3) analyzing smoke components of the prepared cigarette, wherein a blank sample is the cigarette without any material, and a reference sample 1 is the cigarette directly added with the same weight of the activated carbon.

As can be seen from Table 1, the phenol content of the cigarette smoke is significantly reduced after the composite material of the embodiment is added.

TABLE 1 flue gas data measurement results

Example 2

adding 1g of sawdust activated carbon into 100g of 1wt% sodium fatty acid-glycerol triacetate solution, performing ultrasonic treatment for 5min, taking out, draining, adding into 100g of prepared 5 wt% polyvinylpyrrolidone-glycerol triacetate solution, performing ultrasonic treatment for 5min to obtain uniform polyvinylpyrrolidone-activated carbon composite material with a molecular weight of 1000, and taking out and drying to obtain the required polyvinylpyrrolidone-activated carbon composite material.

100mg of the above composite material was added to a cigarette filter rod.

The smoke component analysis of the prepared cigarettes is carried out, and the results are shown in table 2, wherein the blank sample is the cigarette without any material, and the comparison sample 2 is the cigarette directly added with the same weight of the activated carbon.

As can be seen from Table 2, the phenol content of the cigarette smoke is significantly reduced after the composite material of the embodiment is added.

Table 2 flue gas data measurement results

Example 3

adding 10g of walnut shell activated carbon into 100g of 30wt% span and lauryl sodium sulfate-ethanol solution, performing ultrasonic treatment for 20min, taking out, draining, adding into 100g of 10wt% polymer-ethanol solution with molecular weight of 1000000, performing ultrasonic treatment for 30min, taking out, and drying to obtain the required polyvinylpyrrolidone-activated carbon composite product.

10mg of the above composite was added to a cigarette filter rod.

The smoke component analysis of the prepared cigarettes was performed, and the results are shown in table 3, in which the blank sample was a cigarette without any material added thereto, and the control 3 was a cigarette directly added with the same weight of activated carbon.

As can be seen from Table 3, the phenol content of the cigarette smoke is significantly reduced after the composite material of the embodiment is added.

TABLE 3 flue gas data measurement results

Example 4

adding 1g of anthracite activated carbon into 20g of 20 wt% lauric acid and food-grade Tween-propylene glycol solution, performing ultrasonic treatment for 15min, taking out, draining, adding into 70g of prepared 3 wt% polyvinylpyrrolidone-propylene glycol solution, wherein the molecular weight of polyvinylpyrrolidone is 5000, performing ultrasonic treatment for 25min uniformly, taking out, and drying to obtain the required polyvinylpyrrolidone-activated carbon composite material product.

20mg of the above composite material was added to a cigarette filter rod.

The smoke component analysis of the prepared cigarettes was performed, and the results are shown in table 4, in which the blank sample was a cigarette without any material added thereto, and the control 4 sample was a cigarette directly added with the same weight of activated carbon.

As can be seen from Table 4, the phenol content of the cigarette smoke is significantly reduced after the composite material of the embodiment is added.

Table 4 flue gas data measurement results

Example 5

adding 1g of bamboo activated carbon into 70g of 15 wt% sodium oleate-glycerin solution, performing ultrasonic treatment for 10min, taking out, draining, adding into 60g of prepared 6 wt% polymer-glycerin solution, wherein the polymer is 3g of polyvinylpyrrolidone with the molecular weight of 100000 and vinylpyrrolidone-maleic acid copolymer with the molecular weight of 5000 (0.6g), performing ultrasonic treatment for 15min uniformly, taking out, and drying to obtain the required composite material product.

80mg of the above composite material was added to a cigarette filter rod.

The smoke component analysis of the prepared cigarettes was performed, and the results are shown in table 5, in which the blank sample was a cigarette without any material added thereto, and the control 5 was a cigarette directly added with the same weight of activated carbon.

As can be seen from Table 5, the phenol content of the cigarette smoke is significantly reduced after the composite material of the present example is added.

TABLE 5 flue gas data measurements

In general, the adsorption effect of phenol is obviously improved after the polyvinylpyrrolidone is compounded with the activated carbon. In addition, all the samples of the examples were prepared into cigarettes, and the smoking evaluation was performed in comparison with the blank cigarettes, and the results of the smoking evaluation are shown in table 6. Research shows that the addition of the polyvinylpyrrolidone-activated carbon composite material has no obvious influence on the taste of the cigarettes, and the irritation is improved.

TABLE 6 evaluation suction table

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A preparation method of a composite material for reducing the release amount of phenol in smoke is characterized by comprising the following steps: the method comprises the following steps:

step (1), preparation of Polymer solution

step (2), preparation of surfactant solution

step (3) preparation of composite material

Adding activated carbon into the surfactant solution obtained in the step (2), performing ultrasonic treatment for 5-20min, taking out, draining, wherein the mass ratio of the added activated carbon to the surfactant solution is 1: 10-100 parts of; and then adding the mixture into the polymer solution obtained in the step (1), wherein the mass ratio of the added activated carbon to the added polymer solution is 1: performing ultrasonic treatment for 5-30min for 10-100 min, taking out, and drying to obtain the composite material;

the solvent is one of water, ethanol, propylene glycol, glycerol and glycerol triacetate.

2. The method of claim 1, wherein: in step (1), the molecular weight is 5000-.

3. The method of claim 1, wherein: the surfactant is one or more of polyethylene glycol, sodium fatty acid, sodium dodecyl sulfate, sodium laurate, sodium oleate and span and food-grade Tween.

4. The method of claim 1, wherein: the active carbon is one of wood active carbon, shell active carbon and coal active carbon.

5. Surface-modified material obtainable by the preparation process according to any one of claims 1 to 4.

6. Use of the surface-modified material according to claim 5, characterized in that: adding surface modifying materials to filter tips

In the amount of 10-100 mg.