Preparation method of chitosan
A chitosan, purpose technology, applied in the field of preparation of chitosan, can solve the problems of low deacetylation degree of chitosan, accelerated deacetylation rate, long processing time, etc., to achieve easy industrialized large-scale production, Simple process operation and high degree of deacetylation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0013] Example 1
[0014] The chitin raw material is pulverized into 20 mesh particles by a pulverizer; 35% NaOH solution is added according to the ratio of 1g: 2ml, and ultrasonic treatment is performed at 60°C for 0.5h; the ultrasonic treatment solution is transferred to the reactor according to the traditional lye Heat at 85°C for 1 hour; after the reaction is completed, take it out and cool to room temperature to filter, rinse with water repeatedly until it is neutral, and dry to obtain a chitosan product. It was determined that the degree of deacetylation was 92.35%, and the viscosity was 1808 mPa·s.
Example Embodiment
[0015] Example 2
[0016] The chitin raw material is pulverized into 60 mesh particles by a pulverizer; 45% NaOH solution is added according to the ratio of 1g: 5ml, and ultrasonic treatment is performed at 65°C for 3 hours; the ultrasonic treatment solution is transferred to the reactor and heated according to the traditional lye The method was reacted at 95°C for 3h; after the reaction, it was taken out, cooled to room temperature, filtered, washed repeatedly with water until it was neutral, and dried to obtain a chitosan product. It was determined that the degree of deacetylation was 92.84% and the viscosity was 1876 mPa·s.
Example Embodiment
[0017] Example 3
[0018] The chitin raw material is pulverized into 40 mesh particles by a pulverizer; 40% NaOH solution is added at a ratio of 1g:3ml, and ultrasonic treatment is performed at 63°C for 1.5h; the ultrasonic treatment solution is transferred to the reactor according to the traditional lye The heating method was used to react at 90°C for 2 hours; after the reaction was completed, it was taken out and cooled to room temperature for filtration, washed repeatedly with water to neutrality, and dried to obtain a chitosan product. After measurement, the degree of deacetylation is 92.56%, and the viscosity is 1902 mPa·s.
PUM
Property | Measurement | Unit |
---|---|---|
Viscosity | aaaaa | aaaaa |
Viscosity | aaaaa | aaaaa |
Viscosity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap