Configurational Microphase Separation in Elongational Flow of an Entangled Polymer Liquid.
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DOI: 10.1103/physrevlett.121.247802
Abstract: Manufacturing of plastics is typically performed via flow processing of a molten polymeric fluid. Until recently, conventional knowledge has maintained that the deformation of the constituent molecules under flow is homogeneous and obeys Gaussian statistics.… read more here.
Keywords: separation elongational; elongational flow; configurational microphase; microphase separation ... See more keywords
A differential pressure extensional rheometer on a chip with fully developed elongational flow
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DOI: 10.1122/1.4998175
Abstract: A method is presented to construct a fully developed elongational flow at a nearly constant extension rate in a converging microchannel. For a Giesekus–Leonov fluid, we show that under appropriate conditions, the first normal stress… read more here.
Keywords: fully developed; elongational flow; stress; developed elongational ... See more keywords
Atomistic Simulation of Flow-Induced Microphase Separation and Crystallization of an Entangled Polyethylene Melt Undergoing Uniaxial Elongational Flow and the Role of Kuhn Segment Extension
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DOI: 10.3390/polym15081831
Abstract: Atomistic simulations of the linear, entangled polyethylene C1000H2002 melt undergoing steady-state and startup conditions of uniaxial elongational flow (UEF) over a wide range of flow strength were performed using a united-atom model for the atomic… read more here.
Keywords: entangled polyethylene; flow; flow induced; crystallization ... See more keywords