Departmental Papers (MSE)

Document Type

Journal Article

Date of this Version

October 1999

Abstract

We determined the local strain profile in sheared lamellar block copolymers. A trilayer model, based on elastic brushes separated by viscous interpenetration zones, captures the rheological response of these materials and provides a measure of the relative contributions of elastic versus viscous strain. The elastic chain distortions were evident from a reversible lamellar contraction, as measured from in situ small-angle x-ray scattering. The contraction was directly correlated to the elastic strain from our trilayer model; three distinct diblock copolymers conform to the predicted relationship, thus suggesting universal behavior.

Comments

Copyright American Physical Society. Reprinted from Physical Review Letters, Volume 83, Issue 14, October 1999, pages 2861-2864.
Publisher URL: http://dx.doi.org/10.1103/PhysRevLett.83.2861

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Date Posted: 11 July 2006

This document has been peer reviewed.