Polymerisation de l'epiclorhydrine a l'aide du systeme catalytique triethylaluminium-eau—I

Dimonie, M.; Gavǎt, I.

doi:10.1016/0014-3057(68)90073-6

Cited by 7 publications

(2 citation statements)

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“…Soed. Be6 [2] BOQDANOV, B., and MIHAILOV, M. : Acta Polymerica 36 (1984) [3] KRESTEVA, M., NEDPOV, E., and MIHAILOV, M.: Bulg The thermal crystallization of isotactic poly(epich1orohydrin) was examined by means of optical microscopy and WAXS. It was found that radial spherulites were formed, their sizes depending on the crystallization temperature.…”

Section: Referencesmentioning

confidence: 99%

“…In 1960 ISHIDA [l] described PECH polymerization on various" organometallic catalyzers. Some time later DIMONIE and GOVAT [2] discussed the stereospecific polymerization on Though polg(epich1orohydrine) (PECH) is produced on the industrial scale and i t has found numerous technological applications, it is insufficiently analysed as far as its chemical and and TURSKA:…”

Section: Zntroductionmentioning

confidence: 99%

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An analysis of structural changes in the process of thermal crystallization of poly(epichlorohydrin) by means of WAXS and microscopic methods

1985

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Act= Polymerica 36 (1905) Nr. 9 483 Strukturelle Besonderheiten und einige physikalisch-chemische Eigenschaften von aus nichtwaprigen Lcisungen erhaltenen Mischungen oon Cellulose und synthetischen Polymeren. 2. Hochauflcisende 13C-NMR von Mischungen aus Cellulose und synthetischen Polymeren im festen Zustund Mit Hilfe der hochauflosenden 13C-NMR-Spektroskopie wurden Mischungen von Cellulose mit Polymethylmethacrylat, Polyacrylnitril, Polyvinylacetat, Polyvinylalkohol und Polydimethylsiloxan mit unterschiedlicher quantitativer Zusammensetzung untersucht.

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Section: Referencesmentioning

confidence: 99%

Section: Zntroductionmentioning

confidence: 99%

An analysis of structural changes in the process of thermal crystallization of poly(epichlorohydrin) by means of WAXS and microscopic methods

1985

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Kinetics of polymerization of 1,3‐dioxepane with the Al(C₂H₅)₃/H₂O catalyst system

Donescu

1974

Makromol. Chem.

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The kinetics of the polymerization of 1,3-dioxepane (DH) with the catalytic system A1(C2H5)3/Hz0 was studied. The dependence of the polymerization rate Ro of the monomer DH(M) may be represented by the equation:The kinetic scheme which verifies the obtained results is that which takes into consideration in the starting period of the polymerization the existence of chain transfer to the monomer. The decrease of the polymerization rate and the diminishing of the intrinsic viscosity at high conversions points to the existence of chain transfer to the polymer in this stage of the reaction. The reaction rate constants of the chain transfer to the monomer are one order of magnitude higher than those of the transfer reaction to the polymer. ZUSAMMENFASSUNG:Die Kinetik der Polymerisation von 1,3-Dioxepan (DH) mit dem Katalysatorsystem Al(C2H 5)3/H20 wurde untersucht. Fur die Abhangigkeit der Polymerisationsgeschwindigkeit RO des Monomeren DH(M) ergibt sich folgende Gleichung: R~=~.[A~(C~H~)~]O.[IM]~{[M] -[MIe}Das kinetische Schema, das die erhaltenen Ergebnisse beschreibt, beriicksichtigt die Existenz einer Ketteniibertragung zum Monomeren fur niedrige Umsatze. Das Absinken der Polymerisationsgeschwindigkeit und die Verminderung des Staudinger-Index bei hohen Umsatzen deutet auf das Vorhandensein einer Ketteniibertragung zum Polymeren wahrend dieses Stadiums der Polymerisation. Die Reaktionsgeschwindigkeitskonstanten der Ketteniibertragung zum Monomeren sind um eine GroBenordnung hoher als die der Ketteniibertragung zum Polymeren.

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Formation of polymer crystals during polymerisation

1971

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Polymerisation de l'epiclorhydrine a l'aide du systeme catalytique triethylaluminium-eau—I

Cited by 7 publications

References 6 publications

An analysis of structural changes in the process of thermal crystallization of poly(epichlorohydrin) by means of WAXS and microscopic methods

An analysis of structural changes in the process of thermal crystallization of poly(epichlorohydrin) by means of WAXS and microscopic methods

Kinetics of polymerization of 1,3‐dioxepane with the Al(C₂H₅)₃/H₂O catalyst system

Formation of polymer crystals during polymerisation

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Polymerisation de l'epiclorhydrine a l'aide du systeme catalytique triethylaluminium-eau—I

Cited by 7 publications

References 6 publications

An analysis of structural changes in the process of thermal crystallization of poly(epichlorohydrin) by means of WAXS and microscopic methods

An analysis of structural changes in the process of thermal crystallization of poly(epichlorohydrin) by means of WAXS and microscopic methods

Kinetics of polymerization of 1,3‐dioxepane with the Al(C2H5)3/H2O catalyst system

Formation of polymer crystals during polymerisation

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Kinetics of polymerization of 1,3‐dioxepane with the Al(C₂H₅)₃/H₂O catalyst system