Polymeric Particles and Their Applications: From Nano- to Macro-spheres
Vortragender: Prof. Dr. Julian Zhu, Department of Chemistry, University of MontrealDi. 17.07.2007 (14:00-15:30), H 20, NW II
Polymeric spheres of various sizes, ranging from nano- to micro- and millimeter scales, have been pre-pared for different applications. (1) Hydrophilic polymeric microgels and core-shell nanospheres (100-600 nm) have been prepared by emulsion polymerization for use as potential biochemical sensors. The formation of crystalline colloidal arrays by these particles have been been studied in an effort to understand the parameters affecting the packing characteristics of the core-shell particles. (2) Microspheres (40-100 mm) of polyacrolein and poly(vinyl alcohol)-graft-poly(ethylene glycol) have also been prepared by suspension polymerization techniques. Smooth and rugged surfaces can be created by varying the polymerization procedure, and porous structures can be created. The very high loading of functional groups of these resins makes them efficient scavengers and they may also serve as support materials in solid phase synthesis. (3) Large uniform-sized polymeric macro-beads (>1 mm) were pre-pared by radical polymerization in an ascending process through a heated column. The large polymer beads are desirable for the one-bead-one-compound applications in combinatorial synthesis of libraries of compounds.
Export as iCal:
