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dc.contributor.authorMahmoudi, Pendar
dc.contributor.authorForrest, William
dc.contributor.authorBeardsley, Tom
dc.contributor.authorMatsen, Mark 15:30:03 (GMT) 15:30:03 (GMT)
dc.description.abstractThis study addresses entropic segregation effects at the surfaces of monodisperse and bidisperse melts. For the monodisperse melts, we focus on the segregation of chain ends to the surface, and for the bidisperse melts, we examine the segregation of short polymers to the surface. Universal shapes have been predicted for their concentration profiles, but the derivations rely on the mean-field approximation, which only treats the excluded-volume interactions in an approximate manner. To test whether or not the predictions hold up when the polymers are rigorously prevented from overlapping, we compare mean-field calculations with Monte Carlo simulations performed on the exact same model. Apart from a significant increase in the statistical segment length, the rigorous enforcement of excluded-volume interactions has a relatively small effect on the mean-field predictions. In particular, the universal profiles predicted by mean-field theory are found to be accurate.en
dc.titleTesting the Universality of Entropic Segregation at Polymer Surfacesen
dcterms.bibliographicCitationM. Mahmoudi, R. W. S. Forrest, T. M. Beardsley and M. W. Matsen, Macromolecules 51, 1242 (2018)en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation1Faculty of Scienceen
uws.contributor.affiliation2Chemical Engineeringen
uws.contributor.affiliation2Physics and Astronomyen
uws.contributor.affiliation2Waterloo Institute for Nanotechnologyen

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