Abstract
A mean field model of interface formation between two weakly incompatible polymer blends is used to investigate the time development of interfacial composition. The interface width as a function of time exhibits two power law growth regimes; a t 1/2 growth law at early times crosses over to a t 1/4 growth law before relaxing towards the equilibrium interfacial profile Nous etudions l'evolution temporelle de la composition de l'interface entre deux melanges de polymeres faiblement incompatibles a l'aide d'une theorie de champ moyen. La dependance en temps de l'epaisseur de l'interface presente deux regimes en loi de puissance; d'une loi de croissance initiale en t 1/2 , on passe a une loi de croissance en t 1/4 avant de relaxer vers le profil d'equilibre de l'interface
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