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Chitosan type Schiff base, preparing method thereof and feather cleaning deodorant based on same

A technology of chitosan and Schiff base, applied in the direction of detergent compounding agent, detergent composition, chemical instruments and methods, etc., can solve the problems of unfavorable detergent preparation, discounted utilization rate, poor solubility, etc., and achieve the reduction of toxic Use of chemical reagents, improvement of solubility, and low-cost effects

Active Publication Date: 2015-04-22
WEST ANHUI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chitosan reacts with hydrogen ions under acidic conditions and turns into salt, which is easy to lose, which is not conducive to the preparation of detergents.
Moreover, because there are a large number of hydrogen bonds between molecules in the chitosan molecule, an ordered macromolecular structure is formed, the solubility is poor, and the utilization rate is greatly reduced.

Method used

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  • Chitosan type Schiff base, preparing method thereof and feather cleaning deodorant based on same
  • Chitosan type Schiff base, preparing method thereof and feather cleaning deodorant based on same
  • Chitosan type Schiff base, preparing method thereof and feather cleaning deodorant based on same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. In this example, a chitosan-type Schiff base was prepared according to the following steps:

[0030] At room temperature and under nitrogen atmosphere, add 20 g of chitosan and 200 mL of ethanol as a solvent to a 250 mL three-necked flask equipped with a mechanical stir bar, stir and heat up to 100 ℃, add 12 g of p-hydroxybenzaldehyde, continue constant reflux reaction for 10 hours, reaction After the end, the solvent was removed by rotary evaporation, and finally vacuum dried at 80°C to a constant weight to prepare 30.9 g of the target product.

[0031] In order to verify the formation of the chitosan-type Schiff base obtained in this example, Fourier transform infrared spectroscopy FTIR was used to characterize the structure of the raw materials and products, and they were compared. The comparison chart of infrared spectra of chitosan Schiff base, chitosan and p-hydroxybenzaldehyde is as follows figure 1 As shown, figure 1 The uppermost curve in the middle is the infrar...

Embodiment 2

[0038] 1. Preparation of Chitosan Schiff Base

[0039] Under room temperature and nitrogen atmosphere, 15g of chitosan and 200mL of acetone were added to a 250mL three-necked flask equipped with a mechanical stirring rod as solvents. When stirring and heating to 80℃, 9g of p-hydroxybenzaldehyde was added, and the reaction was continued at constant reflux for 12h. After the end, the solvent was removed by rotary evaporation, and finally vacuum dried at 80° C. to a constant weight to prepare 28.9 g of the target product.

[0040] 2. Chitosan-based feather cleaning deodorant

[0041] Weigh 20 g of chitosan-type Schiff base, 20 g of OP-10 and 60 g of deionized water into a 200 mL beaker, and stir evenly with a glass rod.

[0042] 3. This embodiment uses the feather cleaning and deodorant prepared in 2 to clean feathers:

[0043] Weigh 20g of Wanxi white goose feathers into a 500mL beaker, then add 100mL of the feather cleaning deodorant prepared in this example, and place the beaker in an ...

Embodiment 3

[0045] 1. Preparation of Chitosan Schiff Base

[0046] At room temperature and under nitrogen atmosphere, add 10g chitosan and 200mL methanol as solvent to a 250mL three-necked flask equipped with a mechanical stir bar, stir and heat up to 90℃, add 6g p-hydroxybenzaldehyde, continue refluxing reaction for 12h, the reaction is over Then, the solvent was removed by rotary evaporation, and finally dried under vacuum to prepare 14.8 g of the target product.

[0047] 2. Chitosan-based feather cleaning deodorant

[0048] Weigh 12 g of chitosan-type Schiff base, 28 g of OP-10 and 60 g of deionized water into a 200 mL beaker, and stir evenly with a glass rod.

[0049] 3. This embodiment uses the feather cleaning and deodorant prepared in 2 to clean feathers:

[0050] Weigh 15g of Wanxi white goose feathers into a 500mL beaker, and then add 150mL of the feather cleaning deodorant prepared in this example, and place the beaker in an ultrasonic cleaner for ultrasonic cleaning. The ultrasonic temp...

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Abstract

The invention discloses a chitosan type Schiff base, a preparing method of the Schiff base and feather cleaning deodorant based on the Schiff base. The Schiff base is characterized in that natural biomass chitosan is used as a main raw material, and reacts with p-hydroxy benzaldehyde in an organic solvent to prepare the chitosan type Schiff base; the chitosan type Schiff base obtained through preparation is mixed with water and OP-10 according to different ratios to prepare the detergent. The feather cleaning deodorant is adopted for cleaning feathers in an ultrasonic mode in ultrasounds, and the cleaned feathers are pure white without extraneous odor; the preparing method of the chitosan-based feather cleaning deodorant is simple, the raw material is safe and free from poison, sources are sufficient, the price is low, and use of poisonous chemical reagents is reduced.

Description

Technical field [0001] The invention relates to a preparation process of a chitosan-based cleaning agent. The invention also relates to the application of the chitosan-based cleaning agent in feather cleaning and deodorization. Background technique [0002] As a major agricultural province in Anhui, livestock and poultry breeding is an important economic industry. While the large-scale development of the livestock and poultry breeding industry stimulates the economy, it also brings certain environmental pollution. Poultry feathers and their waste are one of them. Feather is a derivative of poultry epidermal cell keratinization, usually occupies 5-11% of the body weight of poultry, its main component is keratin, the content is as high as 80-90%. Feathers are difficult to degrade naturally in the air. Their high content of protein and other attached impurities and other nitrogen and phosphorus-containing substances often become nutrient sources for other pathogenic bacteria, espe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/08C11D1/72C11D3/48C11D3/22
Inventor 徐国梅谢成根李淮芬郝洪荣
Owner WEST ANHUI UNIV
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