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The role of the termination by the polymer chain in the cationic polymerization of oxetane and 3,3-dimethyloxetane (1984)

Bello, Antonio ; Pérez, Ernesto ; Fatou, José Ma Gómez

New York : Wiley-Blackwell

Die Makromolekulare Chemie 185 (1984), S. 249-253

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Details

ISSN: 0025-116X

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Physik

Notizen: The ring opening polymerization of oxetane and 3,3-dimethyloxetane was carried out in dichloromethane at 25°C with triethyloxonium hexafluoroantimonate as catalyst. After polymerization, the flow times were measured for active and terminated solutions in high vacuum. In the case of oxetane, the data support the presence of branched structures in the active solutions formed by an intermolecular chain transfer reaction to the polymer chains, to give non-strained oxonium-ions. This intermolecular side reaction was not detected in the case of 3,3-dimethyloxetane, if the presence of intramolecular chain transfer to a small extent is not excluded.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/macp.1984.021850203

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