Abstract
Various tri- and tetracyclic olefinic hydrocarbons were polymerized via ring-opening metathesis polymerization (ROMP) initiated by different molybdenum carbene complexes. The influence of molecular weight and microstructure on the glass transition temperature of obtained polymers were investigated. Molecular weights were regulated by addition of 1-octene as a chain-transfer agent. The content of cis vinylene units in the polymer backbone was varied by using molybdenum carbenes with various alkoxy groups. Furthermore the effects of different bicyclic units in the polymer backbone on the glass transition temperature were investigated. Polymers were characterized by FT-IR, NMR and size exclusion chromatography (SEC) using calibration vs. polystyrene standards, differential viscosity and light scattering.
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