A polymer microsphere
A polymer and microsphere technology, which is applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of low epoxy group content, poor mechanical properties, and reduced mechanical properties, and achieve high mechanical strength, strong impact resistance, The effect of uniform particle size
Inactive Publication Date: 2011-12-28
SUZHOU UNIV +2
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The invention discloses a polymer microsphere and a preparation method thereof. Microspheres include a core and surface grafts; the core is monodisperse polystyrene-divinylbenzene microspheres with a crosslinking degree of 60% to 90% and a particle size of 2 to 20 microns, and the surface is grafted The compound is polyglycidyl methacrylate or its derivatives. It uses Friedel-Crafts acylation reaction, using α-haloacyl halide as an acylating agent, and bonding initiator molecules on the surface of microspheres; using conventional atom transfer radical polymerization method, to initiate monomer glycidyl methacrylate Ester polymerization; ring-opening with different nucleophiles to introduce amino groups, hydroxyl groups, hydrazine groups, carboxyl groups and mercapto groups on the surface of microspheres. This type of polymer microsphere can be used as a separation material suitable for different chromatography such as high-efficiency ion exchange, chelation and high-efficiency affinity, and can also be used as a carrier for immobilizing certain enzymes and catalysts. It is a class of excellent functional microspheres.
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