Network Model of the Disordered Phase in Symmetric Diblock Copolymer Melts

Mridul Yadav; Frank S. Bates; David C. Morse

doi:10.1103/PhysRevLett.121.127802

Network Model of the Disordered Phase in Symmetric Diblock Copolymer Melts

Mridul Yadav, Frank S. Bates, David C. Morse

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Abstract

We present a model for the order-disorder transition of symmetric A-B diblock copolymer melts in which the disordered phase is treated as a bicontinuous network, and in which self-consistent field predictions of properties of an analogous ordered network are used to estimate some properties. Such a model is shown to accurately predict the latent heat of this transition. The dependence of the location of the transition upon the invariant degree of polymerization N is shown to be consistent with a simple hypothesis that the disordered bicontinuous structure is stabilized relative to an analogous ordered network by a nearly constant entropy per network junction.

Original language	English (US)
Article number	127802
Journal	Physical review letters
Volume	121
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.121.127802
State	Published - Sep 20 2018

Bibliographical note

Funding Information:
This work was supported primarily by the National Science Foundation through the University of Minnesota Materials Research Science and Engineering Center under Grant No.DMR-1420013, using computational resources of the Minnesota Supercomputing Institute.

Funding Information:
This work was supported primarily by the National Science Foundation through the University of Minnesota Materials Research Science and Engineering Center under Grant No. DMR-1420013, using computational resources of the Minnesota Supercomputing Institute.

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© 2018 American Physical Society.

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title = "Network Model of the Disordered Phase in Symmetric Diblock Copolymer Melts",

abstract = "We present a model for the order-disorder transition of symmetric A-B diblock copolymer melts in which the disordered phase is treated as a bicontinuous network, and in which self-consistent field predictions of properties of an analogous ordered network are used to estimate some properties. Such a model is shown to accurately predict the latent heat of this transition. The dependence of the location of the transition upon the invariant degree of polymerization N is shown to be consistent with a simple hypothesis that the disordered bicontinuous structure is stabilized relative to an analogous ordered network by a nearly constant entropy per network junction.",

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N2 - We present a model for the order-disorder transition of symmetric A-B diblock copolymer melts in which the disordered phase is treated as a bicontinuous network, and in which self-consistent field predictions of properties of an analogous ordered network are used to estimate some properties. Such a model is shown to accurately predict the latent heat of this transition. The dependence of the location of the transition upon the invariant degree of polymerization N is shown to be consistent with a simple hypothesis that the disordered bicontinuous structure is stabilized relative to an analogous ordered network by a nearly constant entropy per network junction.

AB - We present a model for the order-disorder transition of symmetric A-B diblock copolymer melts in which the disordered phase is treated as a bicontinuous network, and in which self-consistent field predictions of properties of an analogous ordered network are used to estimate some properties. Such a model is shown to accurately predict the latent heat of this transition. The dependence of the location of the transition upon the invariant degree of polymerization N is shown to be consistent with a simple hypothesis that the disordered bicontinuous structure is stabilized relative to an analogous ordered network by a nearly constant entropy per network junction.

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Network Model of the Disordered Phase in Symmetric Diblock Copolymer Melts

Abstract

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Network Model of the Disordered Phase in Symmetric Diblock Copolymer Melts

Abstract

Bibliographical note

MRSEC Support

PubMed: MeSH publication types

Publisher link

Find It

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Fingerprint

Projects

MRSEC IRG-3: Hierarchical Multifunctional Macromolecular Materials

University of Minnesota MRSEC (DMR-1420013)

Cite this