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Graphene-based composite micro-sphere for cigarette and preparation method of composite micro-sphere

A graphene-based, composite microsphere technology, applied in applications, tobacco, e-liquid filter elements, etc., can solve the problems of complex flavors and fragrances, thermal collapse of the filter rod structure, etc., to prevent collapse, optimize the taste of smoking, and increase the ratio The effect of surface area

Active Publication Date: 2019-06-18
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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  • Graphene-based composite micro-sphere for cigarette and preparation method of composite micro-sphere
  • Graphene-based composite micro-sphere for cigarette and preparation method of composite micro-sphere

Examples

Experimental program
Comparison scheme
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 micro-sphere for cigarettes and a preparation method of the composite micro-sphere and application of the composite micro-sphere to cigarettes, andbelongs to the technical field of cigarette additives. The method includes the steps: firstly, reducing graphene oxide by natural reducing agents, and performing reaction on the acquired reduced graphene oxide, fruity aldehyde compounds and dopamine hydrochloride; secondly, performing Soxhlet extraction on mixture to obtain graphene-based composite materials with molecular recognition functions; finally, compounding various graphene-based composite materials prepared by different aldehyde compounds to prepare the graphene-based composite micro-sphere. The micro-sphere selectively adsorbs isovaleraldehyde, octyl aldehyde, nonyl aldehyde, decyl aldehyde and melonal from complex natural flavors and fragrances, adsorption objects and capacity can be controlled, the acting force between micro-spheres adsorption molecules mainly serves as non-covalent bond force, and the micro-sphere has good heat conductivity and can be rapidly desorbed in the using process. The micro-sphere is prepared into additives and added into a filter tip, fruity taste can be provided, smoking aroma quality of the cigarettes is improved, smoking comfort is improved, and structural thermal collapse can be prevented.

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 Applications(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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