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Structurally well-defined, polymer-grafted hybrid nanocomposite was prepared by introducing the surface of ultrafine silica with peroxide groups for reverse atom transfer radical polymerization (ATRP). The introduction of peroxide groups onto the ultrafine silica was achieved by the reaction of hydrogen peroxide with chlorosilyl groups, which were introduced by the treatment of silica with thionyl...
Reverse atom transfer radical polymerization (ATRP) of styrene initiated with tetraethylthiuram disulfide (TD)/cuprous bromide (CuBr)/2,2'-bipyridine (bpy) has been successfully carried out at 120 o C. The kinetic plot was first order in monomer. The measured number-average molecular weight was in good accordance with the theoretical one. Radical scavenger 1,1-diphenyl-2-picrylhydrazyl (DPPH)...
The radical polymerization of styrene initiated with tetraethylthiuram disulfide (TD)/nickel (II) chloride (NiCl 2 )/triphenylphosphine (PPh 3 ) was of living nature via a one-electron redox reaction between nickel(II) and (III) species. The mechanism belonged to reverse atom transfer radical polymerization (reverse ATRP). The living essence was affected by the molar concentration...
Living/controlled radical polymerization of methyl methacrylate (MMA) was investigated using a new initiating system, i.e. DCDPS/FeCl3/PPh3, in which diethyl 2,3-dicyano-2,3-diphenylsuccinate (DCDPS) is a hexa-substituted ethane thermal iniferter. The polymerization mechanism belongs to a reverse ATRP process. The polymerization was closely controlled in bulk and in solution at quite low temperature...
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