Elongational flow‐induced microstructure evolutions in polypropylene/layered double hydroxides nanocomposites
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DOI: 10.1002/pc.28221
Abstract: In this work, the effect of the non‐isothermal elongational flow on the morphology and mechanical properties of polypropylene (PP)‐based nanocomposites containing Mg‐Al layered double hydroxides (LDHs) modified with stearate or oleate functional groups has been… read more here.
Keywords: flow induced; elongational flow; tensile strength; layered double ... See more keywords
Elastic particle model for coil-stretch transition of dilute polymers in an elongational flow
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2024.196
Abstract: Abstract The phenomenon of the ‘coil-stretch’ (C-S) transition, wherein a long-chain polymer initially in a coiled state undergoes a sudden configuration change to become fully stretched under steady elongational flows, has been widely recognized. This… read more here.
Keywords: coil stretch; stretch transition; elongational flow; model ... See more keywords
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