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Cellulose acetate fiber for heavy metal substance adsorption type cigarette and preparation method of cellulose acetate fiber

A technology of cellulose acetate and cellulose diacetate, which is applied in the fields of tobacco, application, smoke oil filter elements, etc., to achieve the effects of simple preparation process, high adsorption effect, and high adsorption stability

Pending Publication Date: 2022-05-27
HUBEI CHINA TOBACCO IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, activated carbon fibers have no selective adsorption capacity for heavy metal substances.

Method used

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  • Cellulose acetate fiber for heavy metal substance adsorption type cigarette and preparation method of cellulose acetate fiber
  • Cellulose acetate fiber for heavy metal substance adsorption type cigarette and preparation method of cellulose acetate fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A heavy metal substance adsorption type cigarette acetate fiber, the acetate fiber comprises cellulose diacetate and vegetable protein bonded and / or associated with the cellulose diacetate; wherein, the vegetable protein can interact with heavy metal ions form a coordinate bond. It is prepared by the following steps:

[0032] (1) Diacetate cellulose (molecular weight 45kD, diameter 200μm, porosity 200 mesh) was melted and drawn to form cellulose diacetate tow, then soaked and cleaned in water, ethanol, isopropanol, and secondary water, respectively, and placed in Dry in an oven at 50°C for later use;

[0033] (2) Add soybean protein isolate to 1% NaOH aqueous solution and stir for 2 hours to prepare a soybean protein isolate alkali solution with a concentration of 5wt%;

[0034](3) adding zein to 75% ethanol, stirring until completely dissolved, and configuring a zein solution with a concentration of 2wt%;

[0035] (4) adding the cellulose diacetate tow obtained in s...

Embodiment 2

[0039] A heavy metal substance adsorption type cellulose acetate for tobacco is prepared by the following steps:

[0040] (1) Diacetate cellulose (molecular weight 40kD, diameter 50μm, porosity 300 mesh) was melted and drawn to form cellulose diacetate tow, then soaked and cleaned in water, ethanol, isopropanol, and secondary water, respectively, and placed in a Dry in an oven at 50°C for later use;

[0041] (2) Add soybean protein isolate to a 1% NaOH aqueous solution and stir for 2 hours to prepare a soybean protein isolate alkali solution with a concentration of 10wt%;

[0042] (3) adding zein to 75% ethanol, stirring until completely dissolved, and configuring a zein solution with a concentration of 10wt%;

[0043] (4) adding the cellulose diacetate tow obtained in step (1) into the KOH-hydrogen peroxide solution for surface plasma treatment;

[0044] (5) soaking the diacetate fiber tow obtained in step (4) in the soybean protein solution of step (2) for 10 minutes, and ...

Embodiment 3

[0048] A heavy metal substance adsorption type cellulose acetate for tobacco is prepared by the following steps:

[0049] (1) Diacetate cellulose (molecular weight 30kD, diameter 100μm, porosity 100 mesh) was melted and drawn to form cellulose diacetate tow, and then soaked and cleaned in water, ethanol, isopropanol and secondary water respectively, and placed in Dry in an oven at 50°C for later use;

[0050] (2) The soybean tissue protein was added to a 1% NaOH aqueous solution and stirred for 2 hours to prepare a soybean protein isolate alkali solution with a concentration of 0.1 wt%;

[0051] (3) adding zein to 75% ethanol, stirring until completely dissolved, and configuring a zein solution with a concentration of 10wt%;

[0052] (4) adding the cellulose diacetate tow obtained in step (1) into the KOH-hydrogen peroxide solution for surface plasma treatment;

[0053] (5) soaking the diacetate fiber tow obtained in step (4) in the soybean protein solution of step (2) for 2...

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Abstract

The invention provides a heavy metal substance adsorption type cigarette cellulose acetate fiber and a preparation method thereof. The cellulose acetate fiber comprises cellulose diacetate and vegetable protein bonded and / or associated with the cellulose diacetate, wherein coordination bonds can be formed between the vegetable protein and heavy metal ions. Natural plant protein is bonded and / or associated to the surface of cellulose diacetate, coordination bonds are formed between rich functional groups on the surface of the plant protein and heavy metal ions, so that selective adsorption of heavy metal substances in mainstream smoke is achieved, the adsorption effect and adsorption stability are high, the preparation process is simple, and the method is suitable for industrial production. Conditions are controllable, and large-scale popularization and application can be realized.

Description

technical field [0001] The invention belongs to the technical field of tobacco filtration, in particular to a heavy metal substance adsorption type cigarette acetate fiber and a preparation method thereof. Background technique [0002] With the development of the tobacco industry, in order to meet the needs of consumers' health concept, the requirements for cigarette filters are also constantly improving. How to further reduce the content of harmful substances, especially heavy metals, has become an urgent problem to be solved in the field of cigarettes. [0003] For heavy metals in flue gas, there are mainly two measures to control. One is to control the ecological environment of tobacco planting areas. With the reduction of soluble heavy metal content in the soil, the heavy metals absorbed by tobacco leaves will be reduced. Therefore, by changing the soil composition The heavy metal content in cigarettes can be reduced from the source. On the other hand, it is to improve ...

Claims

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Application Information

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IPC IPC(8): A24D3/10A24D3/02
CPCA24D3/10A24D3/0204Y02A50/20
Inventor 李哲铭彭三文杨光远王庆九张千
Owner HUBEI CHINA TOBACCO IND
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