Cationic polymerization of 3-azidomethyl-3-methyloxetane in the presence of the boron fluoride etherate-ethylene glycol systemстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация: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.