Cationic polymerization of 3-azidomethyl-3-methyloxetane in the presence of the boron fluoride etherate—ethylene glycol system |
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| Authors: | A E Tarasov Ya I Estrin O M Ol’khova V P Lodygina E R Badamshina |
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| Institution: | 1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia
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| Abstract: | The kinetics of oligomerization of 3-azidomethyl-3-methyloxetane in the presence of the boron fluoride etherate—ethylene glycol initiating system is studied by gel-permeation chromatography and IR spectroscopy methods. It is found that the molecular-mass distribution of the resulting oligooxetanediol depends on the concentration of ethylene glycol, while its molecular mass remains practically unchanged throughout the reaction. In other words, ethylene glycol serves as a chain-transfer agent. The relative chaintransfer constant is 0.5. The schemes of polymerization reactions are proposed. |
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