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Preparation method of chitosan-based slow-release flavor type nano composite micro-capsule coating material

A nanocomposite and coating material technology, applied in the field of coating materials, can solve problems such as no public reports

Active Publication Date: 2015-01-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, up to now, there have been no public reports on the preparation of hybrid microcapsules by introducing nanoparticles into chitosan

Method used

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  • Preparation method of chitosan-based slow-release flavor type nano composite micro-capsule coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Prepare a weak acid solution with a mass fraction of 2%, add chitosan powder to it, the mass ratio of chitosan and weak acid solution is 1:10, ultrasonically treat for 20min, and stir at 60°C for 36h to obtain chitosan sugar solution.

[0034] In step 1, the weak acid is acetic acid;

[0035] Chitosan is a water-soluble low molecular weight chitosan with molecular weight within 1000.

[0036] Step 2: Dissolve the amphiphilic copolymer micelle F127 in an organic solvent to form a homogeneous transparent solution. The mass-volume ratio of the amphiphilic copolymer micelle to the organic solvent is 90 mg: 900 μL; after stirring for 8 hours, add the nanoparticle precursor to it and fragrance molecules, ultrasonic treatment for 30min, the mass-volume-mass ratio of the amphiphilic copolymer micelles to the nanoparticle precursor and the fragrance is 9g:9μL:1mg, and a mixed solution is obtained.

[0037] In step 2, the organic solvent is tetrahydrofuran;

[0038] Th...

Embodiment 2

[0042] Step 1: Prepare a weak acid solution with a mass fraction of 3%, add chitosan powder to it, the mass ratio of chitosan to weak acid solution is 1:10, ultrasonically treat for 30min, and stir at 80°C for 54h to obtain chitosan sugar solution.

[0043] In step 1, the weak acid is acetic acid;

[0044] Chitosan is a water-soluble low molecular weight chitosan with molecular weight within 1000.

[0045] Step 2: Dissolve the amphiphilic copolymer micelles F127 in an organic solvent to form a uniform transparent solution. The mass-volume ratio of the amphiphilic copolymer micelles to the organic solvent is 120 mg: 1350 μL; after stirring for 11 hours, add the nanoparticle precursor to it and essence molecules, sonicated for 55min, the mass-volume-mass ratio of the amphiphilic copolymer micelles to the nanoparticle precursor and the essence was 12g:12μL:2mg, and a mixed solution was obtained.

[0046] In step 2, the organic solvent is tetrahydrofuran;

[0047]The nanopartic...

Embodiment 3

[0051] Step 1: Prepare a weak acid solution with a mass fraction of 4%, add chitosan powder to it, the mass ratio of chitosan and weak acid solution is 1:10, ultrasonically treat for 40min, and stir at 100°C for 72h to obtain chitosan sugar solution.

[0052] In step 1, the weak acid is hydrochloric acid;

[0053] Chitosan is a water-soluble low molecular weight chitosan with molecular weight within 1000.

[0054] Step 2: Dissolve the amphiphilic copolymer micelles F127 in an organic solvent to form a uniform transparent solution. The mass-volume ratio of the amphiphilic copolymer micelles to the organic solvent is 150 mg: 1800 μL; after stirring for 14 hours, add the nanoparticle precursor to it and essence molecules, sonicated for 80min, the mass-volume-mass ratio of the amphiphilic copolymer micelles to the nanoparticle precursor and the essence was 15g: 16μL: 3mg, and a mixed solution was obtained.

[0055] In step 2, the organic solvent is dimethylformamide;

[0056] T...

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Abstract

The invention relates to a preparation method of a chitosan-based slow-release flavor type nano composite micro-capsule coating material. Chitosan shows relatively good application prospects in the field of functional coatings and in the field of coating finishing, but has relatively less application research in leather finishing materials. The preparation method comprises the following steps: preparing a weak acid solution, adding chitosan powder, performing ultrasonic treatment, and stirring to obtain a chitosan dissolved solution; dissolving an amphiphilic copolymer micelle F127 into an organic solvent to form a uniform and transparent solution, adding a nano-particle precursor and essence molecules, and performing ultrasonic treatment to obtain a mixed solution; and injecting the mixed solution into the chitosan dissolved solution by adopting a micro-injector, continuously stirring, and drying the organic solvent by virtue of evaporation to obtain the chitosan-based slow-release flavor type nano composite micro-capsule coating material. A micro capsule prepared by using the method disclosed by the invention is stable in structure and regular in size, has certain film-forming properties and essence coating and control release properties, and has relatively good application potential in the fields of functional leathers, textiles and related coating materials.

Description

Technical field [0001] The present invention involves a coating material, which specifically involves the preparation method of a shell polycogeny -release nano -composite micro -capsule coating material. Background technique [0002] The coating process plays a very important role in the production and production. After coating, it can improve the durability of the leather, make the surface of the leather bright, beautiful, significantly improve the quality and grade of the revolution, increase the variety and commercial value of the leather, so the coating is appliedAlso known as the pen of "painting dragon".At present, with the increasing shortage of global petrochemical resources and higher requirements for ecology and environmental protection in leather production, it is an effective way to prepare leather coating materials with renewable resources as raw materials. [0003] The only polycal ionic biologist obtained from the natural crustacin part of the acetyl is part of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M23/12D06M15/03B01J13/02
Inventor 马建中徐群娜范倩倩
Owner SHAANXI UNIV OF SCI & TECH
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