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Chitosan polycation composite material reducing phenols materials in cigarette smoke

A technology of composite materials and cigarette smoke, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of increasing harmful components, complex preparation process, and influence on the taste of smoke, so as to reduce the harmful components of phenols and maintain the inherent Quality, the effect of avoiding the loss of aroma components

Active Publication Date: 2012-04-18
CHINA TOBACCO ZHEJIANG IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent ZL200710162960.8 discloses mixing extracts of some Chinese herbal medicines into cut tobacco as a method to reduce harmful phenolic substances in cigarette smoke, but this method may affect the normal combustion of cut tobacco and affect the taste of smoke , and even increase other harmful ingredients
Chinese patent application CN200910307638.9 discloses that calixarene in solid powder form is directly added to cigarette filters as an additive, which can reduce phenol by about 40%, but the toxicity of calixarene itself has yet to be considered
In addition, Chinese patent application CN200810031589.6 and Chinese patent application CN200710034453.6 respectively disclose ionic liquids and metal oxides as additives for filter rods, and have a certain effect of reducing phenols; however, the preparation process of these two substances is relatively complicated, and The health and safety of filters added with ionic liquids or metal oxides needs further investigation

Method used

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  • Chitosan polycation composite material reducing phenols materials in cigarette smoke
  • Chitosan polycation composite material reducing phenols materials in cigarette smoke
  • Chitosan polycation composite material reducing phenols materials in cigarette smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A solution of 5 mg / mL chitosan hydrochloride (solution A) and a solution of 5 mg / mL sodium polystyrene sulfonate (solution B) were prepared. Take 5.0g of granular activated carbon, mix it with 10ml of solution B, stir evenly, and let it stand at 25°C for 1h. Filter and bake all the solids at 70°C for 48h. The obtained solid was mixed with 10 mL of solution A, stirred evenly, and allowed to stand at 25° C. for 1 h. Filtrate, dry all the solids at 80°C for 40 hours to obtain dry solids, that is, to complete one self-assembly, and then treat the dry solids with solution B and solution A for 6 times according to the above method, and obtain 14 monolayers. The outer layer is the above-mentioned hydrophilic polycation of chitosan hydrochloride to obtain a composite material with high water retention, and the mass percent content of the polycation loaded in the composite material is 3%. In the infrared spectrum of the composite material, 1000~1100cm -1The appearance of the ...

Embodiment 2

[0045] Chitosan hydrochloride was dissolved in water to prepare an aqueous solution of 0.2 mg / mL chitosan hydrochloride (solution A) and an aqueous solution of 8 mg / mL sodium alginate (solution B). Take 5.0g of powdered silica gel, mix it with 10ml of solution B, stir evenly, and let stand at 15°C for 2h. Filter and bake all the solids at 60°C for 72h. The obtained solid was mixed with 5 mL of solution A, stirred evenly, and allowed to stand at 25° C. for 1 h. Filtrate and dry the filtered solid at 75°C for 50 hours to obtain a dry solid, that is, to complete one self-assembly, and then treat the dry solid with solution B and solution A for 10 times according to the above method to obtain 22 monolayers, The outermost layer is the above-mentioned chitosan hydrochloride hydrophilic polycation, and the composite material with high water retention can be obtained (1000~1100cm in the infrared spectrum -1 The appearance of the characteristic peak at the place, and the measured val...

Embodiment 3

[0052] Chitosan hydrochloride was dissolved in water to prepare an aqueous solution of 10 mg / mL chitosan hydrochloride (solution A) and an aqueous solution of 4 mg / mL carboxymethyl chitosan (solution B). Take 5.0g granular macroporous adsorption resin, mix it with 4ml solution B, stir evenly, and let stand at 25°C for 2h. Filter and bake all the solids at 60°C for 72h. The obtained solid was mixed with 4 mL of solution A, stirred evenly, and allowed to stand at 30° C. for 1 h. Filtrate and dry the filtered solid at 75°C for 50 hours to obtain a dry solid, that is, to complete one self-assembly, and then treat the dry solid with solution B and solution A for 7 times according to the above method to obtain 16 monolayers, The outermost layer is the above-mentioned chitosan hydrochloride hydrophilic polycation to obtain a composite material with high water retention, and the weight percentage of polycation loaded in the composite material is 3%. In the infrared spectrum of the c...

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Abstract

The invention discloses a chitosan polycation composite material reducing phenols materials in cigarette smoke. The composite material is used for alternatively loading polyanions and hydrophilic polycations on a porous material in a mode of layer-upon-layer self-assembling by using the porous material as a carrier, wherein the hydrophilic polycations which are loaded on the outmost layer of the porous layer are chitosan hydrochloride. The composite material can be used for preparing a cigarette filter, and can also be used for preparing a two-section composite cigarette filter or three-section composite cigarette filter. The invention can reduce phenols harmful substances in the cigarette smoke by using water selectivity in the composite material, and can simultaneously prevent flavor components from losing and keep the internal quality of the cigarette because many flavor organic compounds are not dissolved in water.

Description

technical field [0001] The invention relates to the technical field of tar reduction and harm reduction of cigarettes, in particular to a chitosan polycation composite material for selectively reducing the content of phenolic substances in cigarette smoke. Background technique [0002] For a long time, the world tobacco industry has always attached great importance to reducing the harm and tar of cigarettes. In recent years, WHO has made specific regulations on the control of harmful components in smoke, which have received positive responses from countries all over the world. Aiming at various harmful components in cigarette smoke, researchers have developed a variety of harm reduction technologies, among which the modification of cigarette filters is one of the most effective means of harm reduction; by adding or compounding nanomaterials, Polymer materials and biological materials can effectively reduce some harmful components of cigarette smoke. [0003] There are many...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26
Inventor 储国海周国俊林贤福金鑫刘金莉徐建
Owner CHINA TOBACCO ZHEJIANG IND
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