Chitosan-type Schiff base, preparation method thereof, and feather cleaning deodorant based thereon

A technology of chitosan and Schiff base is applied in the directions of detergent compounding agent, detergent composition, chemical instrument and method, which can solve the problems of unfavorable detergent preparation, utilization rate discount, poor solubility, etc., and reduce toxic The use of chemical reagents, the effect of improving solubility, and low cost

Active Publication Date: 2017-01-11
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, preparation method thereof, and feather cleaning deodorant based thereon
  • Chitosan-type Schiff base, preparation method thereof, and feather cleaning deodorant based thereon
  • Chitosan-type Schiff base, preparation method thereof, and feather cleaning deodorant based thereon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1, the present embodiment prepares chitosan type Schiff base according to the following steps:

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

[0031] In order to verify the generation of chitosan-type Schiff base obtained in this example, the structures of raw materials and products were characterized and compared by Fourier transform infrared spectroscopy (FTIR). The infrared spectrum comparison chart of chitosan-type Schiff base, chitosan and p-hydroxybenzaldehyde figure 1 as shown, figure 1 The uppermost curve is the infrared spectrum of...

Embodiment 2

[0038] 1. Preparation of chitosan-type Schiff base

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

[0040] 2. Chitosan-based feather cleaning deodorant

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

[0042] 3, the present embodiment utilizes the feather cleaning deodorant prepared in 2 to clean feathers:

[0043] Weigh 20g of Wanxi White Goose Feather and add it to a 500mL beaker, then add 100mL of the feather cleaning deodorant prepared in ...

Embodiment 3

[0045] 1. Preparation of chitosan-type Schiff base

[0046] At room temperature and nitrogen atmosphere, add 10g chitosan and 200mL methanol as solvent to a 250mL three-neck flask equipped with a mechanical stirring rod, add 6g p-hydroxybenzaldehyde when stirring to 90°C, continue to reflux for 12 hours, and the reaction ends Finally, the solvent was removed by rotary evaporation, and finally vacuum-dried to obtain 14.8 g of the target product.

[0047]2. Chitosan-based feather cleaning deodorant

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

[0049] 3, the present embodiment utilizes the feather cleaning deodorant prepared in 2 to clean feathers:

[0050] Weigh 15g of Wanxi White Goose Feather and add it to a 500mL beaker, then add 150mL of the feather cleaning deodorant prepared in this example, and place the beaker in an ultrasonic cleaner for u...

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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, and also relates to the application of the chitosan-based cleaning agent in feather cleaning and deodorization. Background technique [0002] Anhui is a large agricultural province, and 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 is one of them. Feather is a derivative of keratinized epidermal cells of poultry animals, usually accounting for 5-11% of poultry weight, and its main component is keratin, with a content as high as 80-90%. Feathers themselves are difficult to degrade naturally in the air, and their high content of protein and other impurities such as nitrogen and phosphorus substances often become a source of nutrition for other pathogenic bacteria, espe...

Claims

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Application Information

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Patent Type & Authority Patents(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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