A comparison of the micromechanical properties of various poly(2,6-dimethyl-1,4-phenylene oxide)-polystyrene (PPO-PS) polymer blends

摘要: Abstract The real and imaginary parts of the dynamic shear modulus ( G ′ ″ respectively) 10%, 20% 30% poly(2,6-dimethyl-1,4-phenylene oxide)-polystyrene (PPO-PS) blends were measured near T g (metastable equilibrium, i.e. supercooled liquid state) at lower temperatures (isoconfigurational in frequency range from 5 × 10 −5 to Hz. results compared with others obtained on pure PS. In a first approximation, two types behaviour observed: (i) WLF law is observed former case; (ii) an Arrhenius verified least part latter case. But closer analysis shows that time-temperature superposition principle not well method test its adequacy proposed. addition secondary, or β, relaxation are given discussed.