One‐electron transfer initiated polymerization reactions I. Initiation through monomer cation radicals

Gaylord, Norman G.

doi:10.1002/pol.1970.230040104

Cited by 33 publications

(12 citation statements)

References 103 publications

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“…Or, si la r~action avait ~t8 uniquement ionique, le rendement aurait &~ plus fort dans le cas de l'azote. Pour ce qui a trait ~i la reaction ionique, l'hydroquinone diminue fortement cette r~action [14]; quant ~t la r~action radicalaire, i'&ude par activation neutronique du polym~re fait dans le t&rachlorure de carbone ne d~c~le du ehlore qu'en infime quantit8 (287 ppm), quantit~ rigoureusement identique ~. ta quantit~ de chlore contenu dans le polym~re, sans ajout de CC14.…”

Section: Methodsunclassified

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Copolymerisation alternee du methacrylate de methyle et du styrene complexes par du Chlorure de Zinc en milieu aqueux

Bataille

Granger

1983

Colloid & Polymer Sci

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Sommaire: Dans cet article, nous discutons de nos r~sultats de ia copolym&isation complex& du m&hacrylate de m&hyle et du styrene avec du chlorure de zinc. Le rendement de la r~action a &~ &udi~ en fonction de la variation des concentrations de l'agent complexant et de l'eau ainsi qu'en foncfion du temps de r~action. Nous avons trouv~ que le complexant et l'eau ont une influence inverse sur le rendement quant au temps de r~action; il permet d'augmenter le rendement. Une ~quation bas& sur nos hypotheses a &~ obtenue. Dans cette ~quation, le rendement est donn~ en fonction des cinq variables suivantes: concentration des monom~res, de l'agent complexant et de l'eau ainsi que du temps de ia r~action. Les r&ultats exp&imentaux ont &~ compares aux valeurs obtenues ~ partir de cette ~quation et indiquent une bonne concordance.Abstract: In this paper we present some of our copolymerization results of methyl methacrylate with styrene in the presence of a complexing agent, zinc chloride. The reaction rates were studied as function of the level of complexing agent, water and time. It was found that the complexing agent level and the water level have opposite effect on the reaction yield, the reaction yield increasing as the level of the complexing agent is increased. The reaction time has also a positive effect on the yield. Using the interrelations between the various factors affecting the reaction an equation was derived ; it relates the reaction yield with the following variables : monomers, complexing agent and water concentration as well as the reaction time. The experimer~tal results were compared with theoretical values obtained from this equation and it showed a good fit.

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Section: Methodsunclassified

“…Si la r~action avait 6t~ uniquement radicalaire, on devrait retrouver du chlore en bout de cha~ne. Nous pouvons conclure aussi que l'esp~ce active n'est ni cationique ni radicalaire [14].…”

Section: Methodsunclassified

Copolymerisation alternee du methacrylate de methyle et du styrene complexes par du Chlorure de Zinc en milieu aqueux

Bataille

Granger

1983

Colloid & Polymer Sci

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“…The circles representing the observed values fit well the solid curve calculated by use of K A~ = 150 and K A~ = 38 l./mole, where K A~ and K A~ are the equilibrium constants for the complex formation between stannic chloride and y-crotonolactone [eqs. (6) and (711.…”

Section: Complex Formation Between Stannic Chloride and Y-crotonolactonementioning

confidence: 99%

Polymerization of coordinated monomers. XII. Alternating copolymerization of γ‐crotonolactone with styrene with the use of stannic chloride

Komiyama

Hirai

1976

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

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γ‐Crotonolactone and styrene copolymerize alternately in the presence of stannic chloride at ‐10°C under photoirradiation. The intrinsic viscosity of the resulting copolymer is in the range of 0.6–0.8 dl/g at 30°C in chloroform. The equilibrium constants for the complex formation between stannic chloride and γ‐crotonolactone were determined in 1,2‐dichloroethane‐toluene solution at 0 and −20°C by use of absorption band at 350 nm. Continuous variation plots based on the 1H‐chemical shift show a 1:1 interaction between styrene and the γ‐crotonolactone coordinated to stannic chloride. The equilibrium constants for the ternary molecular complex formation between the coordinated γ‐crotonolactone and styrene were determined in 1,2‐dichloroethane in the temperature range from −20 to 0°C. The equilibrium constants, derived independently from the measurements of the nonequivalent protons in γ‐crotonolactone, are equal to each other within the experimental error. The mechanism of the alternating copolymerization of γ‐crotonolactone and styrene in the presence of stannic chloride is discussed in terms of the homopolymerization of the ternary molecular complex.

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“…Figure 5 is a composition diagram of copolymerization. When compared at a certain monomer feed ratio, the methyl methacrylate content of the copolymer increases by dilution with toluene (runs [1][2][3][4] in Table 111). By comparing runs 1-3 with runs 5-7 we find that the copolymers of the same composition are produced from the systems of the same feed concentrations of styrene, whether in the presence or absence of toluene.…”

Section: Characterization Of the Copolymermentioning

confidence: 99%

Polymerization of coordinated monomers. XIV. Systematic deviations from alternating regulation in copolymerization of methyl methacrylate with styrene in the presence of metal halides

Hirai

Tanabe

Koinuma

1979

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

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One‐electron transfer initiated polymerization reactions I. Initiation through monomer cation radicals

Cited by 33 publications

References 103 publications

Copolymerisation alternee du methacrylate de methyle et du styrene complexes par du Chlorure de Zinc en milieu aqueux

Copolymerisation alternee du methacrylate de methyle et du styrene complexes par du Chlorure de Zinc en milieu aqueux

Polymerization of coordinated monomers. XII. Alternating copolymerization of γ‐crotonolactone with styrene with the use of stannic chloride

Polymerization of coordinated monomers. XIV. Systematic deviations from alternating regulation in copolymerization of methyl methacrylate with styrene in the presence of metal halides

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