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arXiv · 2311.13093

Extensibility governs the flow-induced alignment of polymers and rod-like colloids

Vincenzo Calabrese·Tatiana Porto Santos·Carlos G. Lopez·Minne Paul Lettinga·Simon J. Haward·Amy Q. Shen
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Abstract

Polymers and rod-like colloids (PaRC) adopt a favorable orientation under sufficiently strong flows. However, how the flow kinematics affect the alignment of such nanostructures according to their extensibility remains unclear. By analysing the shear- and extension-induced alignment of chemically and structurally different PaRC, we show that extensibility is a key determinant of the structural response to the imposed kinematics. We propose a unified description of the effectiveness of extensional flow, compared to shearing flow, at aligning PaRC of different extensibility.

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Vincenzo Calabrese, Tatiana Porto Santos, Carlos G. Lopez, Minne Paul Lettinga, Simon J. Haward, Amy Q. Shen. 2023-11-22. Extensibility governs the flow-induced alignment of polymers and rod-like colloids. https://arxiv.org/abs/2311.13093

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