Flory theorem for structurally asymmetric mixtures.

TitleFlory theorem for structurally asymmetric mixtures.
Publication TypeJournal Article
Year of Publication2007
AuthorsFC Sun, AV Dobrynin, D Shirvanyants, H-I Lee, K Matyjaszewski, GJ Rubinstein, M Rubinstein, and SS Sheiko
JournalPhysical Review Letters
Volume99
Issue13
Start Page137801
Date Published09/2007
Abstract

The generalization of the Flory theorem for structurally asymmetric mixtures was derived and tested by direct visualization of conformational transformations of brushlike macromolecules embedded in a melt of linear chains. Swelling of a brush molecule was shown to be controlled not only by the degree of polymerization (DP) of the surrounding linear chains, N(B), but also by the DP of the brush's side chains, N, which determines the structural asymmetry of the mixed species. The boundaries of the swelling region were established by scaling analysis as N(2) < N (B) < N (A)/N, where N (A) is the degree of polymerization of the brush backbone. Experiment and theory demonstrated good agreement.

DOI10.1103/physrevlett.99.137801
Short TitlePhysical Review Letters