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Polymer anionic chitosan surfactant and preparation method thereof

A surfactant and anionic technology, which is applied in the field of polymer anionic chitosan surfactant and its preparation, can solve the problems of the ability to reduce the surface tension of water and limit the scope of application, so as to achieve less reaction by-products and reduce pollution , the effect of reducing production costs

Active Publication Date: 2017-11-21
CHINA RES INST OF DAILY CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above products have low ability to reduce the surface tension of water, which greatly limits their application range.

Method used

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  • Polymer anionic chitosan surfactant and preparation method thereof
  • Polymer anionic chitosan surfactant and preparation method thereof
  • Polymer anionic chitosan surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In a four-neck flask equipped with a thermometer, a condenser, a constant pressure dropping funnel and a stirrer, first add 150mL of 5% acetic acid solution and 80mL of absolute ethanol to make a mixed solution, then add 3.0g (deacetylation degree 90%) , about 0.018mol) chitosan, swell at room temperature to form a light yellow transparent viscous liquid, and slowly add 8g (about 0.04mol) lauric aldehyde (dissolved in 50mL ethanol) dropwise, and wait until the dropwise addition is completed at 90°C The reaction was stirred for 24h. After that, 2.3 g of sodium borohydride (about 0.06 mol, dissolved in 20 mL of water) was added to react for 24 h. Slowly add 8 g (about 0.04 mol) of lauryl aldehyde (dissolved in 50 mL of ethanol) slowly and repeatedly, and react with stirring at 90° C. for 24 h after the addition is complete. After that, 2.3 g of sodium borohydride (about 0.06 mol, dissolved in 20 mL of water) was added to react for 24 h. After completion, adjust the pH t...

Embodiment 2

[0039] In a four-necked flask equipped with a thermometer, a condenser, a constant pressure dropping funnel and a stirrer, first add 150mL of 3% acetic acid solution and 30mL of absolute ethanol to make a mixed solution, then add 9.0g (deacetylation degree 90% , about 0.054mol) chitosan, swell at room temperature to form a light yellow transparent viscous liquid and slowly add 20g (about 0.11mol) of lauric aldehyde (dissolved in 30mL ethanol) dropwise, and stir at 100°C after the addition is complete Reaction 20h. After that, 4.16 g of sodium borohydride (about 0.11 mol, dissolved in 50 mL of water) was added to react for 20 h. Slowly add 20 g (about 0.11 mol) of lauryl aldehyde (dissolved in 30 mL of ethanol) dropwise again, and stir the reaction at 100° C. for 20 h after the dropwise addition is completed. After that, 4.16 g of sodium borohydride (about 0.11 mol, dissolved in 50 mL of water) was added to react for 20 h. After completion, adjust the pH to 8 with 20% sodium ...

Embodiment 3

[0042] In a four-necked flask equipped with a thermometer, a condenser, a constant pressure dropping funnel and a stirrer, first add 150mL of 4% acetic acid solution and 50mL of absolute ethanol to make a mixed solution, then add 4.0g (deacetylation degree 90% , about 0.024mol) chitosan, swell at room temperature to form a light yellow transparent viscous liquid and slowly add 10g (about 0.05mol) laurylaldehyde (dissolved in 25mL ethanol) dropwise, and stir at 80°C after the addition is complete Reaction 30h. After that, 1.9 g of sodium borohydride (about 0.05 mol, dissolved in 20 mL of water) was added to react for 30 h. Slowly add 10 g (about 0.05 mol) of lauryl aldehyde (dissolved in 25 mL of ethanol) dropwise again, and stir the reaction at 80° C. for 30 h after the dropwise addition is completed. After that, 1.9 g of sodium borohydride (about 0.05 mol, dissolved in 20 mL of water) was added to react for 30 h. After completion, adjust the pH to 10 with 20% sodium hydroxi...

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Abstract

The invention discloses a polymer anionic chitosan surfactant and a preparation method thereof. The polymer anionic chitosan surfactant has a structural formula shown in the description. In the formula, n is 100 to 3000. The polymer anionic chitosan surfactant has the advantages of low production cost, high purity, no pollution and good solubility.

Description

technical field [0001] The invention relates to a polymer anionic chitosan surfactant and a preparation method thereof. Background technique [0002] As a member of the surfactant family, a polymer surfactant refers to a molar mass of more than several thousand (generally 10 3 ~10 6 g / mol) and have a certain surface activity, composed of a hydrophilic part and a hydrophobic part. Compared with low-molecular surfactants, its advantages are high solution viscosity and good film-forming properties. The disadvantage is that it has poor ability to reduce the surface tension of the solution, but it can play an important role on the solid-liquid and liquid-liquid interfaces, such as dispersion, Emulsification, coagulation, foam stabilization, protective colloid, solubilization, etc. [0003] Chitosan is the deacetylation product of chitin, a natural biorenewable resource, has good biological activity and many special functions, and is known as the "sixth life element of the huma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/04B01F17/16B01F17/32C08B37/08C09K23/04C09K23/16C09K23/32
CPCC08B37/003C09K23/00
Inventor 杨效益张彬彬李萍郭朝华李建波李全红
Owner CHINA RES INST OF DAILY CHEM IND
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