Nm microsphere of magnetic polymer and its preparing process

Abstract

A monometer-level microsphere of magnetic polymer is prepared from the hydrophilic monomers (acrylamide, acrylic acid, etc.) through preparing super-paramagnetic nm microspheres of iron oxide by chemical deposition method, adding emulsifier, trigger, cross-linking agent and said iron oxide microspheres, and reaction in redox or thermal triggering system. The resultant microsphere has super paramagnetism and adjustable granularity (70-140 nm).

Description

technical field

[0001] The invention belongs to the technical field of polymer materials, and in particular relates to polymer nanometer microspheres with superparamagnetic properties and a preparation method thereof. technical background

[0002] Polymer microspheres have many unique advantages: large specific surface area; uniform and controllable particle size of microspheres; wide range of polymer sources, including natural and synthetic polymers; various copolymerization functional monomers and polymerization processes can be selected for Polymer microsphere design, etc. Therefore, functionalized polymer microspheres can be widely used in many fields, such as directional drug delivery in biochemistry and biomedicine, medical latex reagents, biomolecular labeling and tracing, etc. High-performance polymer coatings and inks, organic and inorganic composite materials, microencapsulation, polymer microporous materials, catalysis, adsorption and separation carriers (such as...