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Influence of Microstructure on Properties of Polymers with High Glass Transition Temperatures obtained by Ring‐Opening Metathesis Polymerization of Polycyclic Hydrocarbons
Author(s) -
PreishuberPflügl Peter,
Eder Elisabeth,
Stelzer Franz,
Reisinger Harald,
Mülhaupt Rolf,
Forsyth John,
Pereña José M.
Publication year - 2001
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20010401)202:7<1130::aid-macp1130>3.0.co;2-c
Subject(s) - romp , glass transition , polymer , polymer chemistry , polymerization , ring opening metathesis polymerisation , metathesis , polystyrene , acyclic diene metathesis , chemistry , molar mass distribution , cationic polymerization , materials science , organic chemistry
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.