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

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

2001-06-15

arxiv.org/abs/cond-mat/0106291v1

Physics

Condensed Matter

Soft Condensed Matter

RevTex, 3 pages, 1 figure, submitted to PRL

Scientific paper

10.1103/PhysRevE.65.031803

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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