Preparation method of nano magnetic particles
A nano-magnetic particle and magnetic particle technology, which is applied in the preparation of microspheres and microcapsule preparations, can solve the problems of uneven size, large surface area, and small particle size of magnetic microspheres, and achieve easy control of the size and preparation Simple method and uniform particle size
Inactive Publication Date: 2020-03-27
SUZHOU LOSH BIOTECH CO LTD
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Abstract
The invention provides a preparation method of nano magnetic particles, which comprises the following steps: firstly, adsorbing a hydrophobic substance on magnetic particles to form hydrophobic strongmagnetic particles; secondly, carrying out emulsification for the first time, namely, adding a surfactant, a monomer solvent and an initiator into the hydrophobic strong magnetic particles to enablethe surfactant to be adsorbed on the surfaces of the hydrophobic strong magnetic particles, and performing ultrasonic treatment to form magnetic particles with uniform in-core particle size; and finally, carrying out emulsification for the second time, namely, continuing to add the initiator and water, heating to 90-110 DEG C, performing reaction for 2-24h, and performing ultrasonic treatment to form magnetic particles with uniform outer diameter of the polymer.
Application Domain
Microballoon preparationMicrocapsule preparation
Technology Topic
ChemistryActive agent +4
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