Interpreting the hierarchical morphology of ABC miktoarm terpolymers using self-consistent field theory

ORAL

Abstract

Miktoarm stars based on poly(cis 1,4-isoprene), poly(styrene) and poly(2-vinylpyridine) (ISV) were studied using small-angle X-ray scattering (SAXS), small-angle neutron scattering (SANS), transmission electron microscopy (TEM) and self-consistent field theory (SCFT). Array of morphologies are observed for different composition of ISV-x (where x is the volume ratio of V:I and I:S are kept fixed at 1:1). Typically, TEM and SAXS are sufficient to characterize the bulk morphology of diblock copolymers. But for ABC miktoarms additional characterization tools are necessary. Picking one system from the array of samples, we have demonstrated how self-consistent field theory (SCFT) can guide the interpretation of hierarchical morphology. The SCFT studies also provides guidelines for deuterating the correct arm prior to SANS investigation.

*Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy (DOE).

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Presenters

  • Jyoti Mahalik

    • Center for Nanophase Materials Sciences, Oak Ridge National Laboratory

Authors

  • Jyoti Mahalik

    • Center for Nanophase Materials Sciences, Oak Ridge National Laboratory

  • Hyeyoung Kim

    • Polymer Science and engineering, University of Massachusetts Amherst
    • University of Massachusetts Amherst

  • Matthias ML Arras

    • Large Scale Structures Group, Neutron Scattering Division, Oak Ridge National Laboratory
    • Oak Ridge National Lab

  • Weiyu Wang

    • Center for Nanophase Materials Sciences, Oak Ridge National Laboratory

  • Sergey Chernyy

    • Micro- and Nanotechnology, Technical University of Denmark, Produktionstorvet, 2800 Lyngby, Denmark
    • Technical University of Denmark

  • Kunlun Hong

    • Center for Nanophase Materials Sciences, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory
    • CNMS, Oak Ridge National Laboratory

  • Gregory S Smith

    • Large Scale Structures Group, Neutron Scattering Division, Oak Ridge National Laboratory
    • Oak Ridge National Lab

  • Bobby G Sumpter

    • Oak Ridge National Laboratory
    • Center for Nanophase Materials Sciences, Oak Ridge National Laboratory
    • ORNL

  • Thomas Russell

    • Department of Polymer Science and Engineering, University of Massachusetts Amherst
    • University of Massachusetts Amherst
    • Polymer Science and engineering, University of Massachusetts Amherst
    • Lawrence Berkeley National Laborabory
    • Beijing University of Chemical Technology
    • Polymer Science and Engineering, University of Massachusetts Amherst

  • Rajeev Kumar

    • Oak Ridge National Laboratory
    • Center for Nanophase Materials Sciences, Oak Ridge National Laboratory