Preparation method of monodisperse polymer particles
A polymer, monodisperse technology, used in chemical instruments and methods, liquid crystal materials, etc., can solve the problems of complex interface assembly, long procedures, and inability to precisely control the internal structure and shape of polymer particles.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0070] Embodiment 1: Preparation of monodisperse liquid crystal microdroplets
[0071] First mix 890 mg of non-reactive liquid crystal compound 5CB, 100 mg of reactive liquid crystal compound RM257, and 10 mg of photoinitiator DMPAP, heat the mixture above the clearing point of the mixed liquid crystal until it becomes a uniform solution, and shake it sufficiently to make it Mix well, then cool the solution slowly to room temperature to form a liquid crystal mixture. Since the photoinitiator DMPAP is sensitive to light, the solution must be placed in a dark place for slow cooling. In an alternative embodiment, 890 mg of non-reactive liquid crystal compound 5CB, 100 mg of reactive liquid crystal compound RM257, and 10 mg of photoinitiator DMPAP can be mixed first, and then a small amount of toluene or acetone can be added until the mixture is completely dissolved To form a uniform solution, shake the mixed solution sufficiently to make it evenly mixed, and then slowly evapor...
Embodiment 2
[0073] Example 2: Preparation of monodisperse polymer ellipsoids with large aspect ratio
[0074] The liquid crystal mixture (10% RM257, 1% DMPAP) was prepared in the same manner as in Example 1. Take 100 mg of the liquid crystal mixture, and add it into 2 ml of a mixture of glycerin and water (the volume ratio of glycerin and water is 9:1). Then 200 microliters of 1% mass concentration PVP solution was added to the system. Pre-emulsion this solution and mix thoroughly to form a dispersed emulsion. Then, the dispersed emulsion was passed through a membrane emulsification device with a membrane pore diameter of 20 microns to form an emulsion containing monodisperse liquid crystal droplets. Afterwards, the emulsion containing monodisperse liquid crystal droplets was placed under a UV light source for curing and polymerization, and the radiation intensity was 2.5mW / cm 2 , The polymerization time is 30 minutes. The system needs to be continuously stirred during the polymeriz...
Embodiment 3
[0075] Example 3: Preparation of monodisperse polymer ellipsoids with small aspect ratio
[0076] The liquid crystal mixture (45% RM257, 1% DMPAP) was prepared in the same manner as in Example 1. Take 100 mg of the liquid crystal mixture, add it into 2 ml of glycerin and water mixture (the volume ratio of glycerol and water is 9:1), and then add 200 microliters of PVP solution with a mass concentration of 1% to the system. Pre-emulsion this solution and mix well to form a dispersed emulsion. Then, the dispersed emulsion was passed through a membrane emulsification device with a membrane pore diameter of 20 microns to form an emulsion containing monodisperse liquid crystal droplets. Afterwards, the emulsion containing monodisperse liquid crystal microdroplets was placed under a UV light source for curing and polymerization, and the radiation intensity was 2.5mW / cm 2 , The polymerization time is 30 minutes. The system needs to be continuously stirred during the polymerizati...
PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
