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Binary hard sphere mixtures in block copolymer melts

Thompson, RB and Lee, JY and Jasnow, D and Balazs, AC (2002) Binary hard sphere mixtures in block copolymer melts. Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 66 (3). ISSN 1063-651X

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Abstract

We perform a self-consistent-field/density-functional-theory hybrid analysis for a system of diblock copolymers mixed with polydisperse, hard, spherical particles of various chemical species. We apply this theory to study the equilibrium morphologies of two different binary sphere/diblock melts. First, we examine the case where the particles have two different sizes, but both types are preferentially wetted by one of the copolymer blocks. We find that the single-particle distributions for the two species do not track one another and that the particles show a degree of entropically generated separation based on size, due to confinement within the diblock matrix. Second, we study the case where the particles are all the same size, but are of two different chemical species. We find that, as expected, the particle distributions reveal a degree of enthalpically driven separation, due to the spheres’ preferential affinities for different blocks of the copolymer. © 2002 The American Physical Society.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Thompson, RB
Lee, JY
Jasnow, D
Balazs, ACbalazs@pitt.eduBALAZS
Date: 17 September 2002
Date Type: Publication
Journal or Publication Title: Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume: 66
Number: 3
DOI or Unique Handle: 10.1103/physreve.66.031801
Schools and Programs: Swanson School of Engineering > Chemical and Petroleum Engineering
Refereed: Yes
ISSN: 1063-651X
Related URLs:
Date Deposited: 31 May 2016 19:04
Last Modified: 09 Dec 2017 21:55
URI: http://d-scholarship.pitt.edu/id/eprint/28107

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