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Stress Relaxation in Diblock Copolymers | | Adolfo M. Nemirovsky
; Thomas A. Witten
; | | Date: |
12 Feb 2001 | | Journal: | Complex Fluids, conference proceedings for conference in Sitges Spain, 1992, edited by Luis Garrido (Springer-Verlag, Heidelberg, 1993) p. 281 | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | We study stress relaxation in a strongly segregated lamellar mesophase of diblock copolymers. We consider the extreme limit in which chains are highly stretched and with their junction points confined to narrow interfaces. A lamella can be divided into "stress blobs" at some distance $z$ from the interface, with well defined local modulus $G(z,omega)$ at frequency $omega$. For sliding (compressional) stress the total modulus is transmitted in series (parallel) across the layer. We evaluate the local $G(z,t)$ which shows, for a given height, a very broad spectrum of relaxation times. | | Source: | arXiv, cond-mat/0102213 | | Services: | Forum | Review | PDF | Favorites | |
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