Ring-opening polymerization of unsaturated alicyclic compounds
Article first published online: 10 MAR 2003
Copyright © 1967 John Wiley & Sons, Inc.
Journal of Polymer Science Part A-1: Polymer Chemistry
Volume 5, Issue 9, pages 2209–2217, September 1967
How to Cite
Calderon, N., Ofstead, E. A. and Judy, W. A. (1967), Ring-opening polymerization of unsaturated alicyclic compounds. J. Polym. Sci. A-1 Polym. Chem., 5: 2209–2217. doi: 10.1002/pol.1967.150050901
- Issue published online: 10 MAR 2003
- Article first published online: 10 MAR 2003
- Manuscript Revised: 28 NOV 1966
- Manuscript Received: 12 SEP 1966
The ring-opening polymerizations of cyclooctene, cyclododecene, 1,5-cyclooctadiene, 1,5,9-cyclododecatriene, 3-methylcyclooctene, and 3-phenylcyclooctene have been carried out by using a two-component catalyst system composed of ethylaluminum dichloride and tungsten hexachloride. NMR and infrared analyses of the respective polymers indicate structures which are consistent with a ring-cleavage mode of propagation. No evidence for double-bond shifts or transannular reactions during the polymerizations of 1,5-cyclooctadiene, 1,5,9-cyclododecatriene, 3-methylcyclooctene, and 3-phenylcyclooctene was found. The polymerizability of substituted, unsaturated, mediumsized alicyclic monomers suggests a convenient method for synthesis of certain perfectly alternating terpolymers. Since polymerizations occurred rapidly with little evolution of heat, it was concluded that entropy is a substantial contributor to the free energy of the ring-opening polymerization of medium-sized, unsaturated alicyclic monomers.