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Cyclopolymerization of ( E,E ) ‐ [6.2]paracyclophane‐1,5‐diene

1986; Wiley; Volume: 24; Issue: 8 Linguagem: Inglês

10.1002/pola.1986.080240801

1099-0518

Daniel T. Longone, Daniel T. Glatzhofer,

Advanced Polymer Synthesis and Characterization

Abstract Polymerization of ( E , E )‐[6.2]paracyclophane‐1,5‐diene proceeds by an intra–intermolecular mechanism to give a polymer containing a [3.2]paracyclophane in the repeat unit. Polymerization occurs with either free radical or cationic initiation; anionic initiation was unsuccessful. Cationic polymerization is favored and appears to proceed through a stabilized carbonium ion intermediate. Spectroscopic and model compound studies are consistent with the proposed polymer structure. Thermal analyses of the polymer indicate a complex thermooxidative behavior in the presence of oxygen, while depolymerization occurs above about 400°C in an inert atmosphere.