Bal'tser A.E.,Applied Chemistry Russian Science Center |
Komarov V.M.,Applied Chemistry Russian Science Center |
Bazanov A.G.,Applied Chemistry Russian Science Center |
Zubritskaya N.G.,Applied Chemistry Russian Science Center |
Machalaba N.N.,Scientific Research Institute of Synthetic Fibres
Fibre Chemistry | Year: 2011
Polymerization of tetrahydrofuran in the presence of the perchloric acid-acetic anhydride catalytic system evolves reversibly in time and is subject to the strong effect of the temperature, where the yield and molecular weight of the oligomer decrease when the temperature increases. The molecular weight of the oligomer can be regulated by changing the amount of catalyst. It is most sensitive to a change in the amount of perchloric acid, which must be measured very precisely, while finer regulation can be performed by varying the amount of acetic anhydride. © 2011 Springer Science+Business Media, Inc.