Journal ArticleDOI
Controlled Radical Polymerization by Degenerative Transfer - Effect of the Structure of the Transfer Agent
TLDR
In this article, various transfer agents of the type R-I were explored, and 1-phenylethyl iodide, iodoacetonitrile, and iodoform were found to be effective in controlling molecular weights and for providing polymers with relatively low polydispersities.Abstract:
Control of the radical polymerization of styrene and acrylates has been achieved by using alkyl iodides in a degenerative transfer process. Various transfer agents of the type R-I were explored. Of those examined, 1-phenylethyl iodide, iodoacetonitrile, and iodoform were found to be effective in controlling molecular weights and for providing polymers with relatively low polydispersities, M w /M n ≤ 1.5. Relatively good control has been also achieved with perfluoroalkyl iodides, whereas most alkyl and aryl iodides have been ineffective transfer agents. Also explored were the effects of initiator structure and reaction temperature on the polymerization systems.read more
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Journal ArticleDOI
Comments on the Paper “Living Radical Polymerization: Kinetic Results” (Catala, J. M.; Bubel, F.; Oulad Hammouch, S. Macromolecules 1995, 28, 8441)
TL;DR: In this article, it has been reported that the rate of styrene bulk polymerization in the presence of various adducts of di-t-butyl nitroxides does not depend on the initial concentration of the adduct.
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Iron-catalyzed living radical polymerization of acrylates: Iodide-based initiating systems and block and random copolymerizations
TL;DR: A half-metallocene iron iodide complex [Fe(Cp)I(CO)2] induced living radical polymerization of methyl acrylate (MA) in conjunction with an iodide initiator [(CH3)2C(CO2Et)I, 1] and Al(Oi-Pr)3) to give polymers of controlled molecular weights and narrow molecular weight distributions (MWDs) as discussed by the authors.
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Ligand effect in Ti-mediated living radical styrene polymerizations initiated by epoxide radical ring opening. III. Substituted sandwich metallocenes
TL;DR: In this paper, the ligand effect and reaction conditions for the living radical polymerization of styrene initiated by epoxide radical ring opening were investigated in a series of substituted sandwich metallocenes.
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Atom transfer radical coupling of polystyrene and poly(methyl acrylate) synthesized by reverse iodine transfer polymerization
TL;DR: In this paper, reverse iodine transfer polymerization was used to synthesize polystyrene and poly(methyl acrylate) (PMA-I) and the resulting polymers were coupled by atom transfer radical coupling using Cu(I)/linear amino-ligand catalysts.
Journal ArticleDOI
Living Radical Polymerization of Styrene with Diphenyl Diselenide as a Photoiniferter. Synthesis of Polystyrene with Carbon-Carbon Double Bonds at Both Chain Ends
TL;DR: In this article, a linear relationship was found for a plot of Mn for polystyrene versus polymer yield, and it was shown that this polymerization proceeds through a living radical mechanism.