Controlled Radical Polymerization with Iodine Compounds

Block and Graft Copolymerization by Controlled/Living Radical Polymerization Methods

Radical Departure: Polymerization Does More With Less

Controlled Polymerization: Beyond Traditional RAFT: Alternative Activation of Thiocarbonylthio Compounds for Controlled Polymerization (Adv. Sci. 9/2016)

In Research News article 1500394, recently developed methods for activating polymerizations employing RAFT agents are described by T. G. McKenzie, C. Boyer, M. Kamigaito, G. G. Qiao, and co-workers. Direct photolysis, or the use of a multitude of (in)organic photoredox catalysts are shown to be effective for activation of radical polymerizations, while various acids are employed together with d...

Synthesis of Polymer Grafted Magnetite Nanoparticle with the Highest Grafting Density via Controlled Radical Polymerization

The surface-initiated ATRP of benzyl methacrylate, methyl methacrylate, and styrene from magnetite nanoparticle is investigated, without the use of sacrificial (free) initiator in solution. It is observed that the grafting density obtained is related to the polymerization kinetics, being higher for faster polymerizing monomer. The grafting density was found to be nearly 2 chains/nm2for the rapi...

Studies on Atom Transfer Radical Polymerization of Acrylates and Styrenes with Controlled Polymeric Block Structures

Atom transfer radical polymerization (ATRP) was applied to homo and block copolymerization of vinyl monomers methacrylates, acrylates, and styrene with iron (FeCl2.4H2O) as the transition metal in most cases. As complexing ligand either a commercially available ligand (triphenyl phosphine) (PPh3) or synthetic aliphatic amines were used. As initiators, methyl 2-bromopropionate, ethyl 2-bromoisob...