Kinetics of polymerization initiated by Mn<sup>3+</sup>–substrate redox system. I

Elayaperumal, P.; Balakrishnan, T.; Santappa, M.; Lenz, Robert W.

doi:10.1002/pol.1979.170171229

J. Polym. Sci. Polym. Chem. Ed.

1979

DOI: 10.1002/pol.1979.170171229

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Kinetics of polymerization initiated by Mn³⁺–substrate redox system. I

P. Elayaperumal

T. Balakrishnan

M. Santappa

et al.

Abstract: SynopsisThe kinetics and mechanism of polymerization of acrylamide (AM) initiated by manganese (111) acetate (MTA)-diglycolic acid (DGA) redox system in aqueous sulfuric acid were studied in the temperature range 20-35OC. The overall rates of polymerization and the disappearance of Mn3+ and the kinetic chain lengths of polyacrylamide were determined. The polymerization reaction is initiated by the organic free radical arising from the Mn3+-diglycolic acid reaction and the termination is by the metal ions. The … Show more

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Cited by 16 publications

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Polymerization of methyl methacrylate initiated by manganese(III) acetate

Reddy

Rao

1984

Makromol. Chem.

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The kinetics of thermal polymerization of methyl methacrylate (MMA) initiated by manganese(II1) in sulfuric acid is studied in the temperature range between 40 and 60 "C. The rate of monomer consumption is found to be dependent on [MMAI2, [H+]-' but independent of [Mn3+]. The rate of manganic ion consumption is directly proportional to [MMA], [Mn3+] and inversely proportional to [H+ 1. The chain length is directly proportional to [MMA] and inversely proportional to [Mn3 + ] and [H+ 1. A plausible reaction mechanism with initiation by Mn3+0H-species and termination by the interaction of Mn3+ with the polymer radical is proposed.

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Polymerization of methyl methacrylate initiated by manganese(III) acetate

Reddy

Rao

1984

Makromol. Chem.

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N,N′‐Methylenebisacrylamide polymerization initiated by Ce(IV)—Malic acid redox system—A kinetic study

Das

Behari

Agrawal

1993

Polymer International

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Free‐radical‐initiated linear cyclopolymerization of a symmetrical non‐conjugated divinyl monomer, viz. N,N'‐methylenebisacrylamide, was carried out using cerium sulphate as initiator and malic acid as activator, in an inert atmosphere at 25 ± 0.1°C. A gel‐free polymer was formed under the experimental conditions. The order with respect to malic acid and monomer was found to be 1 and 2, respectively. The rate of polymerization was found to be inversely proportional to the concentration of Ce(IV). The overall energy of activation was found to be 25.5 kJ mol−1. An intramolecular cyclization prior to propagation is proposed in formulating a suitable mechanism to explain the kinetic results.

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Redox polymerisation—kinetics of polymerisation of acrylamide initiated by the Mn³⁺‐citric acid redox system

Sailaja

Raju

1993

Polymer International

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The kinetics and mechanism of polymerisation of acrylamide initiated by manganese(III) acetate‐citric acid (CA) redox system in aqueous acetic acid and sulphuric acid medium were studied over the temperature range 30‐50° C. The overall rates of polymerisation (Rp), disappearance of manganic ion (—Rm), and degree of polymerisation (X̄n) were measured with variation in [monomer], [Mn3+], [CA], [H+], μ and temperature. The polymerisation is initiated by the organic free radical arising from the Mn3+‐CA reaction and the termination is by metal ions. The various rate parameters were evaluated and discussed.

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Kinetics of polymerization initiated by Mn³⁺–substrate redox system. I

Cited by 16 publications

References 5 publications

Polymerization of methyl methacrylate initiated by manganese(III) acetate

Polymerization of methyl methacrylate initiated by manganese(III) acetate

N,N′‐Methylenebisacrylamide polymerization initiated by Ce(IV)—Malic acid redox system—A kinetic study

Redox polymerisation—kinetics of polymerisation of acrylamide initiated by the Mn³⁺‐citric acid redox system

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Kinetics of polymerization initiated by Mn3+–substrate redox system. I

Cited by 16 publications

References 5 publications

Polymerization of methyl methacrylate initiated by manganese(III) acetate

Polymerization of methyl methacrylate initiated by manganese(III) acetate

N,N′‐Methylenebisacrylamide polymerization initiated by Ce(IV)—Malic acid redox system—A kinetic study

Redox polymerisation—kinetics of polymerisation of acrylamide initiated by the Mn3+‐citric acid redox system

Contact Info

Product

Resources

About

Kinetics of polymerization initiated by Mn³⁺–substrate redox system. I

Redox polymerisation—kinetics of polymerisation of acrylamide initiated by the Mn³⁺‐citric acid redox system