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Preparation method of natural aromatic sponge with high adsorbing efficiency

A sponge and aromatic technology, applied in the field of preparation of natural aromatic sponges, can solve the problems of safety and environmental protection, and achieve the effects of improving the embedding effect, increasing the adsorption capacity, and prolonging the release time

Inactive Publication Date: 2019-03-08
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention uses chemical materials and uses the fragrance of essence to cover up the irritating smell of polyurethane, which cannot meet the requirements of safety and environmental protection

Method used

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  • Preparation method of natural aromatic sponge with high adsorbing efficiency
  • Preparation method of natural aromatic sponge with high adsorbing efficiency
  • Preparation method of natural aromatic sponge with high adsorbing efficiency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 0.375g of chitosan, 0.25g of β-cyclodextrin and 0.375g of gelatin in a beaker, the mass ratio of chitosan, β-cyclodextrin and gelatin is 3:2:3, add Concentration is 0.05mol / L acetic acid solution 60ml, stir while adding, and heat to 50 ℃ for 30min, continue to stir overnight, make chitosan, β-cyclodextrin and gelatin dissolve completely, obtain mixed solution.

[0028] (2) Add cross-linking agent glutaraldehyde, the mass fraction is 50% glutaraldehyde aqueous solution dosage is 0.2ml, stir evenly, pour into flat mold, put into oven, 60 ℃ cultivate 2 hours, form gel, put into the refrigerator at 4°C for 8 hours.

[0029] (3) After taking it out, put it in a refrigerator at -20°C for 12 hours, and freeze-dry it at -80°C for 24 hours. Take it out and get a sponge.

[0030] (4) 1ml of clove essence is added in 99ml of ethanol to obtain a concentration of 1% essence solution.

[0031] (5) Cut the obtained sponge into small pieces with a size of 1 cm×1 cm and a m...

Embodiment 2

[0034] (1) Weigh 0.3g of chitosan, 0.4g of β-cyclodextrin and 0.3g of gelatin in a beaker, the mass ratio of chitosan, β-cyclodextrin and gelatin is 3:4:3, add Concentration is 0.05mol / L acetic acid solution 60ml, stir while adding, and heat to 50 ℃ for 30min, continue to stir overnight, make chitosan, β-cyclodextrin and gelatin dissolve completely, obtain mixed solution.

[0035](2) Add crosslinking agent glutaraldehyde, the amount of glutaraldehyde aqueous solution with a mass fraction of 50% is 0.3ml, stir evenly, pour it into a flat mold, put it in an oven, and incubate at 60°C for 2 hours to form a gel, put Refrigerate at 4°C for 8 hours.

[0036] (3) After taking it out, put it in a refrigerator at -20°C for 12 hours, and freeze-dry it at -80°C for 24 hours. Take it out and get a sponge.

[0037] (4) Add 2ml of green tea essence and orange peel essence to 98ml of ethanol at a volume ratio of 1:1 to obtain an essence solution with a concentration of 2%.

[0038] (5) Cu...

Embodiment 3

[0041] (1) Weigh 0.25g of chitosan, 0.5g of β-cyclodextrin and 0.25g of gelatin in a beaker, the mass ratio of chitosan, β-cyclodextrin and gelatin is 1:2:1, add Concentration is 0.1mol / L acetic acid solution 60ml, stir while adding, and heat to 50 ℃ for 30min, continue to stir overnight, make chitosan, β-cyclodextrin and gelatin dissolve completely, obtain the mixed solution.

[0042] (2) Add crosslinking agent glutaraldehyde, the amount of glutaraldehyde aqueous solution with a mass fraction of 50% is 0.4ml, stir evenly, pour it into a flat mold, put it into an oven, and incubate at 60°C for 2 hours to form a gel, put it into Refrigerate at 4°C for 8 hours.

[0043] (3) After taking it out, put it in a refrigerator at -20°C for 12 hours, and freeze-dry it at -80°C for 24 hours. Take it out and get a sponge.

[0044] (4) Add 3ml of clove essence, orange peel essence and lemon essence to 97ml of ethanol at a volume ratio of 1:1:1 to obtain a 3% essence solution.

[0045] (5...

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Abstract

A preparation method of natural aromatic sponge with high adsorbing efficiency includes the steps of (1) weighing chitosan, beta-cyclodextrin and gelatin, adding into a beaker, adding acetic acid solution 0.05-0.1 mol / L in concentration, fully dissolving the chitosan, beta-cyclodextrin and gelatin to obtain a mixed solution; (2) adding glutaraldehyde solution 25-50% in mass concentration into themixed solution, stirring well, pouring into a mold, placing in an oven for cultivating to form gel, placing in a refrigerator at 4 DEG C for 8-12 hours, placing a refrigerator at -18 DEG C to -20 DEGC for 8-12 hours, lyophilizing at -80 DEG C for 24-48 hours, and taking out sponge; (3) adding an essence into ethanol to obtain essence solution 1-5% in volume concentration; (4) cutting the sponge into cubes, adding them into the essence solution, and carrying out ultrasonic treatment; (5) taking out the sponge, placing in an oven at 30-40 DEG C for 1-2 hours, and taking out aromatic sponge. Thepreparation method herein helps improve the mechanical properties and adsorbing performance of the aromatic sponge and extend the aroma release time.

Description

technical field [0001] The invention belongs to the field of chitosan materials, and in particular relates to a preparation method of highly efficient adsorption natural aromatic sponge. Background technique [0002] Fragrance can make people feel happy and improve the product experience of consumers. There are many kinds of fragrance products in different forms, but they all have one common feature, the fragrance is easy to release and the fragrance lasts for a short time. In order to slow down the aroma release, many absorbent materials are produced. At present, the commonly used adsorption materials are mainly molecular sieves, activated carbon, ion exchange resins, adsorption resins, etc. Most of these adsorption materials use organic matter such as animals, plants, coal, and petroleum as production materials, which are non-renewable and difficult to biodegrade. Chitosan sponge is environmentally friendly and easy to degrade, and its raw material reserves are abundant a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/08C08L89/00C08L5/16C08K5/07C08J9/28C08J9/40
CPCC08J9/28C08J9/40C08J2305/08C08J2389/00C08J2405/16C08K5/07
Inventor 邵平于江潘杰峰屠幼英
Owner ZHEJIANG UNIV OF TECH
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