M. Bucquoye, E. Goethals
1978
Citations
0
Influential Citations
5
Citations
Journal
European Polymer Journal
Abstract
Abstract The copolymerization of 3,3-dimethyloxetane and oxetane has been studied in methylene chloride at 20°, with triethyloxonium tetrafluoroborate as initiator. The copolymerization reactivity parameters are rDMOx = 0.95 and rOx = 1.19. By means of 300 MHz 1H-NMR spectroscopy, the microstructure of the copolymers could be analyzed in terms of triad abundances. The observed values are in good agreement with the values calculated from the reactivity parameters thus showing the absence of penultimate effects and of re-distribution of the structural units in the copolymers. The results demonstrate that Ox is more reactive than DMOx to either of the two growing species in the copolymerization.