Several important controlled radical polymerization systems developed recently were reviewed by combination of the published literature and the authors’ research results on atom transfer radical polymerization (ATRP) .In our laboratory

a wide range of novel block copolymers were synthesized by transformation of various mechanism polymerizations(e.g.anion

cation

telomerization and step-growth) to ATRP.A series of graft copolymers with controlled branched chains were prepared using halogenation

chloromethylation and ATRP methods. Wellcontrolled fluorinated random copolymers were obtained.Star(co) polymers were also synthesized via multi-functional initiator and coupling approach.In addition

some new catalyst systemswhich based on rare earth metal or using 1

10-phenanthroline and bis (2-dimethyl-amionethyl) ether as ligand

were developed.Poly (methyl methacrylate) with bimodal distribution

polystyrene with high melting point and thermoplastic elastomer (PSt-

b

- PBA-

b

-PSt) were prepared by emulsion "living" radical polymerization.Good prospects for living radical polymerization were also shown.