Method for preparing nonspherical, raspberry-shaped or hollow polymer microspheres through one-pot dispersion polymerization
A dispersion polymerization, polymer technology, applied in the field of dispersion polymerization, to achieve the effect of significant advantages and simple methods
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0060] Put a 100ml four-necked round-bottom reaction flask equipped with mechanical stirring and reflux condenser in a constant temperature water bath, add 12.5ml ethylene glycol and 12.5ml deionized water (ethylene glycol / water=5 / 5, vol.) , add monomer styrene St2.5ml (concentration in the reaction solution 8wt.%), sodium styrene sulfonate NaSS0.0453g (2wt.%, relative to St weight), initiator azobisisobutyronitrile AIBN0.0453g ( 2wt.%, relative to the weight of St); start stirring, the speed is 200r / min; 2 Deoxygenated for 30min and kept at N 2 Under the atmosphere, the constant temperature water bath was heated to 80°C at the same time to start the reaction. After 180min, add ATRP reagent CuBr to the reaction system 2 0.0138g (0.6wt.%, relative to the initial St weight) and MA 5 DETA0.0512g (2.3wt.%, relative to the initial St weight) and water 1ml (40vol.%, relative to the initial St volume), add crosslinking agent DBPMA0.0906g (4wt.%, relative to the initial St weight) ...
Embodiment 2
[0062] Others are as in Example 1, except that after 180 minutes of dispersion polymerization, crosslinking agent DBPMA0.0906g (4wt.%, relative to the initial St weight) and DVB1.6ml (65.4wt.%, relative to the initial St weight) were added to the reaction system ), the microspheres observed by SEM are snowman-like polymer microspheres with smooth head and body surfaces (similar to the attached figure 1 ), the diameter of the head is 186nm, and the diameter of the body is 228nm.
Embodiment 3
[0064] Others are as in Example 1, except that after 180 minutes of dispersion polymerization, MAEDCA0.0138g (0.6wt.%, relative to the initial St weight) and 1ml of water are added to the reaction system, and crosslinking agent DBPMA0.0906g (4wt.%, relative to the initial St weight) is added. Initial St weight) and DVB1.6ml (65.4wt.%, relative to the initial St weight), continue to react for 5h. SEM and TEM observations show that the surface of the head is smooth and the surface of the body is very rough—the body is a raspberry-like snowman-like polymer microsphere (see attached figure 2 ), the head diameter is 130nm, and the body diameter is 233nm.
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
diameter | 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