Preparation method of glucose crosslinked composite gel and application of glucose crosslinked composite gel to cigarettes

A composite airgel and glucose technology, applied in applications, tobacco, e-liquid filter elements, etc., can solve the problems of cigarette application burial, cumbersome preparation procedures, safety hazards, etc., to increase the adsorption speed and adsorption capacity, and increase the specific surface area , to avoid negative effects

Active Publication Date: 2018-01-09
CHINA TOBACCO GUANGXI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method uses glutaraldehyde and other cross-linking agents as a necessary condition for forming a gel, and the preparation procedure is cumbersome, and it will have a negative impact on the sensory quality of cigarettes after being applied to cigarette filters.
At the same time, soaking in organic solvents such as acetone before supercritical drying also poses a safety hazard for its application in cigarettes
Chitosan-silicon dioxide composite airgel has also been reported (Ma Qian. Preparation, modification and performance research of chitosan-silicon dioxide composite airgel. Master's degree thesis, Tianjin University), but the method It is a preparation method based on silica airgel. Silica is generated in situ, and the particle size and pore structure of silica cannot be selected.

Method used

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  • Preparation method of glucose crosslinked composite gel and application of glucose crosslinked composite gel to cigarettes
  • Preparation method of glucose crosslinked composite gel and application of glucose crosslinked composite gel to cigarettes
  • Preparation method of glucose crosslinked composite gel and application of glucose crosslinked composite gel to cigarettes

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Experimental program
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Effect test

Embodiment 1

[0028] Weigh 50g chitosan and dissolve in 0.1M acetic acid solution to make 1wt% chitosan acetic acid solution, add 5g glucose and stir to dissolve, add 10g nanometer SiO 2 Powder, ultrasonically dispersed for 5min, then stirred until evenly dispersed, then slowly added 1mol / L NaHCO dropwise while stirring 3 The pH value of the solution was 6.4, and then vigorously stirred for 5 minutes after the dropwise addition, and then placed in a constant temperature water bath at 45°C for 1 hour to obtain a hydrogel, cut the hydrogel into pieces and soaked in deionized water for 12 hours and every 3 hours Change the water once, and finally freeze-dry for 24 hours to obtain glucose cross-linked nano-SiO 2 - Chitosan composite airgel, the gel is white and fluffy. The gel is crushed and sieved to obtain 20-40 mesh gel particles.

Embodiment 2

[0030] Weigh 50g chitosan and dissolve in 0.1M acetic acid solution to make 1wt% chitosan acetic acid solution, add 5g glucose and stir to dissolve, add 20g nanometer SiO 2 Powder, ultrasonically dispersed for 10min, then stirred until evenly dispersed, then slowly added 1mol / L NaHCO dropwise while stirring 3 The pH value of the solution was 6.4, and then vigorously stirred for 5 minutes after the dropwise addition, and then placed in a constant temperature water bath at 45°C for 1 hour to obtain a hydrogel, cut the hydrogel into pieces and soaked in deionized water for 12 hours and every 3 hours Change the water once, and finally freeze-dry for 24 hours to obtain glucose cross-linked nano-SiO 2 - Chitosan composite airgel, the gel is white and fluffy. The gel is crushed and sieved to obtain 20-40 mesh gel particles.

Embodiment 3

[0032]Weigh 50g chitosan and dissolve in 0.1M acetic acid solution to make 1wt% chitosan acetic acid solution, add 5g glucose and stir to dissolve, add 40g nanometer SiO 2 Powder, ultrasonically dispersed for 15 minutes, then stirred until uniformly dispersed, then slowly added 1mol / L NaHCO dropwise while stirring 3 The pH value of the solution was 6.4, and then vigorously stirred for 5 minutes after the dropwise addition, and then placed in a constant temperature water bath at 45°C for 1 hour to obtain a hydrogel, cut the hydrogel into pieces and soaked in deionized water for 12 hours and every 3 hours Change the water once, and finally freeze-dry for 24 hours to obtain glucose cross-linked nano-SiO 2 - Chitosan composite airgel, the gel is white and fluffy. The gel is crushed and sieved to obtain 20-40 mesh gel particles.

[0033] Simultaneously, the nano SiO that does not add glucose (glucose) is prepared by utilizing above-mentioned embodiment method 2 -Chitosan gel. T...

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Abstract

The invention discloses a preparation method of glucose crosslinked nano SiO2-chitosan composite aerogel and an application of the glucose crosslinked nano SiO2-chitosan composite aerogel to cigarettefilter tips. The preparation method comprises steps as follows: chitosan is dissolved in an acetic acid solution, glucose is added and taken as a cross-linking agent to support a three-dimensional skeleton of chitosan, then nano SiO2 powder is added, an NaHCO3 solution is dropwise added to regulate pH value, and after heating in water bath, hydrosol is obtained; the hydrosol is washed with deionized water and subjected to freeze drying, and the glucose crosslinked nano SiO2-chitosan composite aerogel material is obtained. The obtained glucose crosslinked nano SiO2-chitosan composite aerogel material is broken and screened, 20-40-mesh particles are prepared and applied to the cigarette filter tips, so that the release amount of harmful composition in smoke is reduced, and the material hasno negative influence on sensory quality of cigarettes.

Description

technical field [0001] The invention relates to the technical field of cigarette material preparation, in particular to a glucose cross-linked nano-SiO with smoke harm reduction function 2 -Preparation method of chitosan composite gel particles and application in cigarette filter. Background technique [0002] In recent years, in order to reduce the harm of cigarettes and better protect the health of smoking consumers, researchers have carried out extensive research in the field of cigarette harm reduction. Among them, adding nano-materials with harm-reducing functions to filters is an important research direction, which can reduce the harm of smoke inhaled by cigarette consumers. However, the powder properties of nanomaterials seriously restrict its application in cigarettes. On the one hand, it is difficult to add nano-powder materials to cigarette filters in an industrialized manner; on the other hand, after powder materials are added to cigarette filters, they are easy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J9/28C08L5/08C08K3/36A24D3/08A24D3/02
Inventor 冯守爱黄江锋刘鸿周俊李志华宋凌勇周芸许蔼飞韦康白家峰黄东业周晓胡志忠黄善松薛云
Owner CHINA TOBACCO GUANGXI IND
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