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Orientations of the lamellar phase of block copolymer melts under oscillatory shear flow

A. N. Morozov·J. G. E. M. Fraaije
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Abstract

We develop a theory to describe the reorientation phenomena in the lamellar phase of block copolymer melt under reciprocating shear flow. We show that similar to the steady-shear, the oscillating flow anisotropically suppresses fluctuations and gives rise to the parallel-perpendicular orientation transition. The experimentally observed high-frequency reverse transition is explained in terms of interaction between the melt and the shear-cell walls.

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A. N. Morozov, J. G. E. M. Fraaije. 2001-06-15. Orientations of the lamellar phase of block copolymer melts under oscillatory shear flow. https://doi.org/10.1103/physreve.65.031803

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