A hierarchical algorithm for predicting the linear viscoelastic properties of polymer melts with long-chain branching
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چکیده
منابع مشابه
Viscoelastic Properties of Polymer Melts from Equilibrium Molecular Dynamics Simulations
Introduction. The dynamics of polymer chains are now generally very well understood in the pioneering frameworks of the Rouse model for short chains, and the reptation model for longer chains.1-5 While these theories yield well-known expressions for the variation of the diffusivity D and viscosity η with the chain length N, an open question is the chain length at which one crosses over from Rou...
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The frequency-dependent shear response of an ultrathin polymer melt (polyphenylmethylsiloxane) confined between adsorbing surfaces (parallel plates of mica) is described. The sinusoidal deformations were sufficiently small to give linear response, implying that measurement did not perturb the film structure. A remarkable transition was observed with decreasing thickness. When the film thickness...
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The lattice cluster theory (LCT) for semiflexible linear telechelic melts, developed in Paper I, is applied to examine the influence of chain stiffness on the average degree of self-assembly and the basic thermodynamic properties of linear telechelic polymer melts. Our calculations imply that chain stiffness promotes self-assembly of linear telechelic polymer melts that assemble on cooling when...
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Properties of simple models of confined linear polymer chains were studied by means of the Monte Carlo method. Model chains were built of united atoms (statistical segments) and embedded to a simple cubic lattice. Then polymers were put into a slit formed by two parallel impenetrable surfaces. Chain lengths were varied up to 800 segments and the density of the polymer melt was changed up to 0.5...
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No part of this work may be reproduced by print, photocopy or any other means without the permission in writing from the publisher. Dit proefschrift is goedgekeurd door: Prof. dr. W.J. Briels (promotor) " Convictions are more dangerous enemies of truth than lies. "-Friedrich Nietzsche
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ژورنال
عنوان ژورنال: Rheologica Acta
سال: 2004
ISSN: 0035-4511,1435-1528
DOI: 10.1007/s00397-004-0415-2