| Popis: |
Copolymers of butylmethacrylate and of methylmethacrylate with donor N-(2-hydroxyethyl)carbazolyl methacrylate and acceptor methacryloyl-β-hydroxyethyl-3,5-dinitrobenzoate respectively, exhibit specific glass transition behaviour. The copolymers with donor HECM show positive deviations from additivity rules for the glass transition behaviour and require diad sequence Tg-contribution, whilst the copolymers with acceptor DNBM show negative deviations and triad sequence Tg-contribution in explaining experimental Tg-data. Activation energies of viscous flow in the molten state behaves similar. |
