A kind of cellulose sulfate hydrogel and preparation method thereof
A technology of cellulose sulfate and hydrogel, which is applied in the field of gel materials, can solve the problems of unreported research on cellulose ester hydrogel, and achieve increased strength, dense three-dimensional network structure, and hydrogel strength. Increased effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0033] A kind of preparation method of cellulose sulfate hydrogel of the present embodiment, concrete operation steps are as follows:
[0034] Dimethylformamide (DMF) was used Molecular sieves are dried to remove moisture, placed in a four-necked flask with a condenser tube and a stirring device in an ice-water mixing bath, and chlorosulfonic acid is slowly added dropwise to dimethylformamide at a rate of 10 drops / min to mix the two For the reaction, dry nitrogen gas was introduced during the reaction, and magnetic stirring was performed at a stirring speed of 100 r / min, and the resulting solution was transferred to an Erlenmeyer flask for later use.
[0035] The wood pulp cellulose was placed in a three-necked flask, and 1 mol / mol AGU (AGU, anhydroglucose unit) chlorosulfonic acid-dimethylformamide complex esterification agent (chlorosulfonic acid The volume fraction is 10%). After reacting for 5 hours, the product was washed with 500ml of absolute ethanol, and then freeze-...
Embodiment 2
[0039] A kind of preparation method of cellulose sulfate hydrogel of the present embodiment, concrete preparation steps are as follows:
[0040] Dimethylformamide (DMF) was used Molecular sieves are dried to remove moisture, placed in a four-necked flask with a condenser tube and a stirring device in an ice-water mixing bath, and chlorosulfonic acid is slowly added dropwise to dimethylformamide at a rate of 10 drops / min to mix the two For the reaction, dry nitrogen gas was introduced during the reaction, and magnetic stirring was performed at a stirring speed of 100 r / min, and the resulting solution was transferred to an Erlenmeyer flask for later use.
[0041] Put the cotton cellulose in a three-necked flask, slowly add 0.8mol / mol AGU (AGU, anhydroglucose unit) chlorosulfonic acid-dimethylformamide complex esterification agent (chlorosulfonic acid) dropwise at 15°C The volume fraction is 12%). After reacting for 3 hours, the product was washed with 500ml of absolute ethanol, ...
Embodiment 3
[0044] A kind of preparation method of cellulose sulfate hydrogel of the present embodiment, concrete preparation steps are as follows:
[0045] Dimethylformamide (DMF) was used Molecular sieves are dried to remove moisture, placed in a four-necked flask with a condenser tube and a stirring device in an ice-water mixing bath, and chlorosulfonic acid is slowly added dropwise to dimethylformamide at a rate of 10 drops / min to mix the two For the reaction, dry nitrogen gas was introduced during the reaction, and magnetic stirring was performed at a stirring speed of 100 r / min, and the resulting solution was transferred to an Erlenmeyer flask for later use.
[0046] Hemp cellulose was placed in a three-necked flask, and 1.2mol / mol AGU (AGU, anhydroglucose unit) chlorosulfonic acid-dimethylformamide complex esterification agent (chlorosulfonic acid The volume fraction is 15%). After reacting for 5 hours, the product was washed with absolute ethanol, and then freeze-dried to obtain...
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
percent by volume | aaaaa | aaaaa |
degree of substitution | 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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com