The unexpected behaviour of epoxidised macromonomers derived from catalytic chain transfer during ring opening copolymerisation
Literature Information
Bas G. P. van Ravensteijn, Robbert Duchateau, Johan P. A. Heuts
In our attempts to combine catalytic chain transfer polymerisation (CCTP) with ring-opening polymerisation (ROP), we investigated the homopolymerisation and copolymerisation behaviour of epoxidised CCTP-derived (macro)monomers. Attempts at polymerisation and copolymerisation proved futile. However, some interesting end-functionalised polymers were generated during the attempted copolymerisation reactions. The cationic ROP of epoxidised CCTP-derived (macro)monomers was unsuccessful due to the formation of stable 5-membered rings, incapable of propagation. In a copolymerisation of these epoxides with tetrahydrofuran (THF), however, we observed that the epoxides did not act as a comonomer but rather as an end-capper, providing a functional end group. Most surprising, was the observation that the epoxidised CCTP-derived (macro)monomers significantly catalyse the homopolymerisation of THF.
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