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A kind of graphene-based composite microspheres for cigarettes and preparation method thereof

A graphene-based, composite microsphere technology, applied in applications, tobacco, e-liquid filter elements, etc., can solve problems such as complex flavors and fragrances, thermal collapse of filter rod structure, etc.

Active Publication Date: 2021-09-14
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ingredients of flavors and fragrances extracted from natural plants are complex, and they also contain many chemical ingredients that are prone to negative effects in the actual application process
However, the current flavor carrier for tobacco does not have the function of specific recognition and adsorption of functional components. At the same time, when the mainstream smoke passes through, it is unable to improve the function of thermal collapse of the filter rod structure when improving the smoking quality of cigarettes.

Method used

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  • A kind of graphene-based composite microspheres for cigarettes and preparation method thereof
  • A kind of graphene-based composite microspheres for cigarettes and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A preparation method for graphene-based composite microspheres for cigarettes, comprising the steps of:

[0042] Step (1), select a specific surface area of ​​about 450 m 2 / g, graphene oxide with a sheet diameter of 8-12 μm and an average number of layers of 7-12 layers;

[0043] Step (2), reducing the graphene oxide selected in step (1) with a natural reducing agent to obtain reduced graphene oxide with a C / O of about 6;

[0044] In step (3), add the reduced graphene oxide obtained in step (2) into PBS buffer to a concentration of 0.5 mg / mL, and after ultrasonication until uniformly dispersed, add fruit with a mass three times the mass of reduced graphene oxide to it. Fragrant aldehydes, add dopamine hydrochloride at the same time, stir and react, centrifuge, wash the solid phase with water, and then carry out Soxhlet extraction with methanol solution containing 9% acetic acid to remove fruity aldehydes, and obtain graphene-based composite materials;

[0045] Wherein...

Embodiment 2

[0051] A preparation method for graphene-based composite microspheres for cigarettes, comprising the steps of:

[0052] Step (1), select a specific surface area of ​​about 500 m 2 / g, graphene oxide with a sheet diameter of 7-10 μm and an average number of layers of 11-15 layers;

[0053] Step (2), reducing the graphene oxide selected in step (1) with a natural reducing agent to obtain reduced graphene oxide with a C / O of about 8;

[0054] Step (3), adding the reduced graphene oxide obtained in step (2) to PBS buffer solution with a pH of 7.5 to a concentration of 1.0 mg / mL, ultrasonically until uniformly dispersed, and adding a mass of reduced graphene oxide to it 5 times the amount of fruit-flavored aldehydes, while adding dopamine hydrochloride, stirring for 2.5 h, centrifuging, washing the solid phase with water, and then carrying out Soxhlet extraction with a methanol solution containing 12% acetic acid to remove the fruity-flavored aldehydes compounds to obtain graphen...

Embodiment 3

[0061] A preparation method for graphene-based composite microspheres for cigarettes, comprising the steps of:

[0062] Step (1), select a specific surface area of ​​about 300 m 2 / g, graphene oxide with a sheet diameter of 12-15 μm and an average number of layers of 16-20 layers;

[0063] Step (2), reducing the graphene oxide selected in step (1) with a natural reducing agent to obtain reduced graphene oxide with a C / O of about 5;

[0064] In step (3), the reduced graphene oxide obtained in step (2) is added to PBS buffer solution with a pH of 8.0 to a concentration of 0.6 mg / mL, and after being sonicated until uniformly dispersed, the mass of reduced graphene oxide is added to it. 2.5 times the amount of fruit-flavored aldehydes, add dopamine hydrochloride at the same time, stir for 0.5 h, centrifuge, wash the solid phase with water, and then carry out Soxhlet extraction with methanol solution containing 10% acetic acid to remove fruity-flavored aldehydes Compound, obtain ...

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Abstract

The invention relates to a graphene-based composite microsphere for cigarettes, a preparation method thereof and an application in cigarettes, belonging to the technical field of cigarette additives. Graphene oxide is reduced with a natural reducing agent, and the obtained reduced graphene oxide is reacted with fruity-flavored aldehyde compounds and dopamine hydrochloride, and then extracted by Soxhlet to obtain a graphene-based composite material with molecular recognition function. Finally, various The graphene-based composite material prepared from the aldehyde compound is compounded into graphene-based composite microspheres for cigarettes. The microspheres can selectively adsorb isovaleraldehyde, octanal, nonanal, decanal and melonal from complex natural flavors and fragrances, and the adsorption objects and capacity are controllable, and the adsorption intermolecular force of the microspheres is mainly non-common Valence bond strength, good thermal conductivity, and rapid desorption during use. When the microsphere is made into an additive and added to the filter tip, it can not only provide fruity aroma, enhance the aroma of cigarettes, improve smoking comfort, but also prevent thermal collapse of the structure.

Description

technical field [0001] The invention belongs to the technical field of cigarette additives, and in particular relates to a graphene-based composite microsphere for cigarettes, a preparation method thereof and an application in cigarettes. Background technique [0002] Graphene is a two-dimensional carbon nanomaterial in which carbon atoms form a hexagonal honeycomb lattice with sp² hybrid orbitals. Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery, and is considered to be a revolutionary material in the future. [0003] Tobacco additives are additives to improve the physical and chemical properties of tobacco, including flavors and fragrances, humectants, combustion enhancers, anti-mold agents and adsorbents. Wherein, the purpose of using essence and fragrance is to cover up the irritation and miscellaneous gas etc. of natural toba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/02A24D3/14
Inventor 高莉李超杨乾栩张伟刘秀明廖头根朱保昆
Owner CHINA TOBACCO YUNNAN IND
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