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.

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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