Time and Frequency Effects on Relaxation Processes

Temperature Transitions Polystyrene Mechanism General Mechanism [Pg.377]

433 K (160°C) Tu Liquid 1 to liquid2 Boundary between rubber elasticity and rubbery flow states [Pg.377]

373 K (100°C) T, Long-range chain motions, onset of reptation Cooperative motion of several Kuhn segments, onset of reptation [Pg.377]

325 K (50°C) P Torsional vibrations of phenyl groups Single Kuhn segment motion [Pg.377]

130 K 7 Motion due to four carbon backbone moieties Small-angle torsional vibrations, 2-3 mers [Pg.377]