Effect of the Counterion on the Cationic Polymerization Rate of Ethylene Oxide by Trityl Salts |
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| Authors: | A Martinez F Mijangos L M Leon |
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| Institution: | Grupo de Química Macromolecular Departamento de Química-Física , Facultad de Ciencias Universidad del Pais Vasco , Apdo. 644, Bilbao, Spain |
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| Abstract: | The cationic polymerization of ethylene oxide by trityl salts (BF4 ?, SbCl6 ?, AsF6 ?, and PF6 ? as counterions) in nitrobenzene at different temperatures has been studied. The kinetic analysis was carried out by use of an automatic manometer, and it showed that the polymerization rate constant depends neither on the counterion type nor on the initial initiator concentration. These facts allowed us to conclude that macrocations and macroion pairs have the same reactivity. |
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