Vinyl Polymerization. 386. Polymerization of Methyl Methacrylate Initiated by Imidazole in Aqueous Solution of Copper(II) Chloride

Preparation of Well-Defined Core−Shell Particles by Cu2+-Mediated Graft Copolymerization of Methyl Methacrylate from Bovine Serum Albumin

“…A possible mechanism is described in Scheme 1. [29][30][31][32][33][34][35][36][37] After charactering and confirming the structure of such obtained core-shell particles, we focused on the optimal copolymerization conditions as follows.…”

“…We found that the addition of a trace amount of free radical inhibitor, p -dihydroxybenzene (0.2 mol % of MMA), in the reaction mixture can completely suppress the graft copolymerization, suggesting that the copolymerization in the presence of Cu 2+ follows a free-radical mechanism, involving the complexation between BSA and MMA. A possible mechanism is described in Scheme . − After charactering and confirming the structure of such obtained core−shell particles, we focused on the optimal copolymerization conditions as follows.…”

Investigation and immobilization of the copper complex of poly [N-(2-Ethoxycarbonylethyl)iminotrimethylene] as a catalyst for the oxidative couplin

“…This idea was supported by building molecular models of the complex, Thus, a real N/Cu ratio of 2, as found for TMED [7], cannot be excluded. Moreover, it should be noted that the Cu2+ ions may also interact with the ester carbonyl groups [23]. Although the exact structure of the complex is of less importance to us in this study, we may draw a possible structure, assuming that the copper ions mainly interact with the nitrogen atoms of the polymer chain, and assuming that a binuclear complex is formed, as with TMED [ 71 (see Fig.…”

Kinetic and mechanistic studies on the block copolymerization of methyl methacrylate initiated by Ce4+-poly (ethylene glycol) redox system

“…In this process, free radicals Poly(ethylene glycol) (PEG) is commercially poare produced by the oxidation of the substrate, tential in a variety of fields 1 such as biology, biowhich in turn initiate the polymerization. Commedical science, surface chemistry, and electromonly employed oxidants are Ce(IV), 3 Mn(III), 4 chemistry, owing to its unique properties such as V(V), 5 Cr(VI), 6 Co(III), 7 Fe(III), 8 Cu(II), 9 etc. solubility and flexibility of the chains, basicity of These oxidants form potential redox systems with the ether oxygen in the main chain, etc.…”