TITLE

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

AUTHOR(S)
Lefebvre, A. A.; Lee, J. H.; Balsara, N. P.; Hammouda, B.
PUB. DATE
March 2002
SOURCE
Journal of Chemical Physics;3/22/2002, Vol. 116 Issue 12, p4777
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
6327655

 

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