Critical length and time scales during the initial stages of nucleation in polymer blends

Lefebvre, A. A.; Lee, J. H.; Balsara, N. P.; Hammouda, B.
March 2002
Journal of Chemical Physics;3/22/2002, Vol. 116 Issue 12, p4777
Academic Journal
The initial stages of nucleation during liquid-liquid phase separation in polymer mixtures were studied by time-resolved small angle neutron scattering. The time required for nucleation vanishes exponentially as the stability limit (spinodal) is approached. The critical nucleus size decreases monotonically with increasing quench depth and remains finite at the spinodal. Our data differ qualitatively from theoretical predictions.


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