Chestnut shell aerogel as well as preparation method and application thereof
A technology of chestnut shell and airgel, which is applied in the direction of pharmaceutical formulations, cosmetic preparations, dressing preparations, etc., can solve problems such as poor quality, easy destruction of natural ingredients, blocking ultraviolet rays and sunscreen effects, and achieve body surface temperature The effect of falling, excellent sun protection performance, and strong absorption capacity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0031] (1) Chestnut shell 1kg, add dilute nitric acid with a volume fraction of 8% and react at 90°C for 1 h, the solid-liquid ratio is 1:10 (g / mL), filter, wash with water until neutral, add 4% nitric acid to the obtained filter residue 10L of NaOH aqueous solution and 10L of 8% hydrogen peroxide aqueous solution were reacted at 60°C for 3h, filtered, washed with water until neutral, and dried at 50°C for 8h to obtain chestnut shell cellulose;
[0032] (2) The mass ratio of chestnut shell cellulose and 1-propyl-3-methylimidazolium chloride is 1:15, swell at 120° C. for 2 hours, add a 10% sulfuric acid solution with a volume fraction of 1 times the mass of the ionic liquid, React at 90°C for 3h, centrifuge at 5000r / min for 10min, and dialyze in distilled water for 24h (molecular weight cut-off 3000Da) to obtain a nanocellulose suspension; fully mix it with 15% lauric acid ethanol solution with a mass fraction of 1 times its volume, Then add 0.8% hydrogen peroxide in the mixed ...
Embodiment 2
[0038] (1) Chestnut shell 1kg, add dilute nitric acid with a volume fraction of 12% and react at 70°C for 3 hours, the solid-to-liquid ratio is 1:30 (g / mL), filter, wash with water until neutral, and add a mass fraction of 6% nitric acid to the obtained filter residue 30L of NaOH aqueous solution and 30L of 10% hydrogen peroxide aqueous solution were reacted at 60°C for 2h, filtered, washed with water until neutral, and dried at 60°C for 3h to obtain chestnut shell cellulose;
[0039] (2) The mass ratio of chestnut shell cellulose to 1-propyl-3-methylimidazolium chloride salt is 1:20, and it is swelled at 120° C. for 2 hours, and a 10% sulfuric acid solution with a volume fraction of 3 times the mass of the ionic liquid is added. Reaction at 90°C for 3h, centrifugation at 10000r / min for 10min, dialysis in distilled water for 48h (molecular weight cut-off 5000Da), to obtain a nanocellulose suspension; fully mix it with 30% lauric acid ethanol solution with a mass fraction 3 time...
Embodiment 3
[0045] (1) Chestnut shell 1kg, add dilute nitric acid with a volume fraction of 10% and react at 80°C for 2 hours, the solid-to-liquid ratio is 1:20 (g / mL), filter, wash with water until neutral, add 5% mass fraction of nitric acid to the obtained filter residue 20L of NaOH aqueous solution and 20L of 9% hydrogen peroxide aqueous solution were reacted at 50°C for 2.5h, filtered, washed with water until neutral, and dried at 55°C for 5h to obtain chestnut shell cellulose;
[0046] (2) The mass ratio of chestnut shell cellulose to 1-propyl-3-methylimidazolium chloride salt is 1:18, swell at 110°C for 2.5h, add 9% sulfuric acid solution with a volume fraction twice the mass of the ionic liquid, React at 80°C for 4h, centrifuge at 8000r / min for 20min, and dialyze in distilled water for 36h (molecular weight cut-off 4000Da) to obtain a nanocellulose suspension; fully mix it with a 20% lauric acid ethanol solution with a mass fraction twice its volume, Then add hydrogen peroxide wit...
PUM
Property | Measurement | Unit |
---|---|---|
density | aaaaa | aaaaa |
quality score | 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