Coarse grained model of diffusion in entangled bidisperse polymer melts.
作者： R. C. Picu , A. Rakshit
DOI: 10.1063/1.2795728
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摘要: Chain diffusion is studied in mixtures of bidisperse linear polymers same chemical identity by means simulations. The two subpopulations are moderately to highly entangled, with the shorter chain length NS, fulfilling NS∕Ne⩾5. To this end, a coarse grained model calibrated reproduce both structure and dynamics chains monodisperse entangled melts used [A. Rakshit R. C. Picu, J. Chem. Phys. 125, 164907 (2006)]. Its performance reproducing polydisperse melt tested extensively comparing results those obtained from an equivalent fine scale representation system (a bead-spring model). further investigate scaling coefficient types its dependence on respective fractions. reproduces many features observed experimentally. For example, one decreases increasing o...
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