Polymer and Materials Science
Wiley InterScience Backfile Collection 1832-2000
Chemistry and Pharmacology
6,8-Dioxabicyclooctane (DBO) and 3,6,8-trioxabicyclooctane (TBO) underwent ring-opening polymerization when treated with PF5 in dichloromethane at -78°C. These conditions were outstandingly effective for the polymerization of these bicyclic monomers, as shown by systematic variation of catalyst, solvent, and temperature. Best results were 68-84% yields of poly-DBO, ηinh 0.26-0.33 dl/g, and ∼100% yield of poly-TBO, ηinh 0.56-0.80 dl/g. The relationship of these results to those of previous investigators of DBO discussed.
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