Layer-by-layer microcapsule assembling process based on mutual covalent action
A technology of microcapsules and covalent bonds, which is applied in the field of preparation of polymer hollow microcapsules to achieve fast reaction speed and easy functionalization
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] 4 g of silica particles with a diameter of 1 μm were suspended in a toluene solution containing 5% γ-aminopropyltriethoxysilane by stirring overnight, then centrifuged, washed twice with toluene, and then washed twice with ethanol. Second, dry. Suspend 1 g of aminated silica particles in 4 mg / ml polyglycidyl methacrylate solution in tetrahydrofuran, pass nitrogen gas for 10 minutes, stir at 60°C for 3 hours, then centrifuge, and wash three times with tetrahydrofuran solvent Then these particles were suspended in the aqueous solution of 4 mg / ml polyallylamine by stirring, nitrogen gas flowed for 10 minutes, stirred at 80° C. for 3 hours, then centrifuged, and washed with water three times. Repeat the above process until the number of assembled layers reaches 7, then use 0.4mol / L hydrofluoric acid to remove the silica particles, and perform an atomic force microscope test on the mica sheet. Figure 1a is the AFM image of the microcapsules, and Figure 1b is the magnified A...
Embodiment 2
[0029] 4 g of silica microparticles with a diameter of 1 μm were suspended overnight in toluene containing 5% γ-aminopropyltrimethoxysilane by sonication, then centrifuged and washed twice with toluene and then twice with methanol ,drying. Suspend 1 g of aminated silica microparticles in 8 mg / ml polyglycidyl methacrylate in tetrahydrofuran solution by ultrasonication, blow nitrogen for 20 minutes, stir at 20°C for 10 hours, then centrifuge and wash with acetone Three times; then these particles were suspended in 2 mg / ml polyallylamine aqueous solution by ultrasonic, nitrogen gas was passed for 20 minutes, stirred at 80° C. for 1 hour, then centrifuged, and washed with water three times. Repeat the above process until the number of assembled layers reaches 7 layers. Figure 2a is the transmission electron microscope image when the silicon dioxide is not removed, and Figure 2b is the transmission electron microscope image after the silicon dioxide is removed with 0.1mol / L hydrofl...
Embodiment 3
[0031] Suspend 4 g of silica particles with a diameter of 1 micron in a toluene solution containing 10% γ-aminopropyltrimethoxysilane by stirring overnight, then centrifuge, wash with toluene 5 times, and dry. Suspend 1 g of aminated silica particles in 1 mg / ml polyglycidyl methacrylate in tetrahydrofuran solution by stirring, blow nitrogen for 30 minutes, stir at 60 °C for 4 hours, then centrifuge and wash with chloroform Three times; these particles were then suspended in an aqueous solution of 1 mg / ml polyallylamine, passed through nitrogen for 10 minutes, stirred at 20° C. for 10 hours, then centrifuged, and washed with water 5 times. Repeat the above-mentioned process until the number of layers assembled reaches 7 layers, then remove silicon dioxide with 0.4mol / L hydrofluoric acid, drop the microcapsule suspension on the mica sheet and carry out scanning electron microscope observation, prove that the gained microcapsules have a hollow structure ( image 3).
PUM
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