Effects of a fumed silica network on kinetics of phase separation in polymer blends

摘要: We have carried out a systematic investigation of the kinetics domain growth model binary mixture in contact with fractal network similar to fumed silica used recent experiments polymer blends. This has selective affinity for one component blend. study morphology growing domains and wetting layer, exponent, dynamical scaling behavior critical composition mixture. find that characteristic size grows as t1/3 deep quenches, long average is small compared “pore” radius unoccupied region. suggests at intermediate times not appreciably perturbed by presence network. For off-critical compositions, we two different situations where either majority or minority blend wets When network, network-induced nucleation is...