Path Dependent Morphologies of a Diblock Copolymer of Polystyrene/ Hydrogenated Polybutadiene

Abstract

Variations in solvent-casting pathways and in bulk annealing conditions led to a variety of morphologies for a single SEB diblock copolymer; some of these are kinetically trapped structures while others are consistent with expectations of equilibrium thermodynamics. Independent control of the morphological scale (microphase-separated vs. disordered) and degree/perfection of crystallinity was demonstrated. These degrees of freedom offer both opportunities and problems for those attempting to develop meaningful structure/ processing/properties relationships for semicrystalline block copolymers and for blends in which they are meant to act as emulsifiers. Block copolymers, Semicrystalline polymers, Polymer morphology.

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Document Details

Document Type
Technical Report
Publication Date
Mar 15, 1989
Accession Number
ADA206504

Entities

People

  • C. V. Berney
  • K. Dozinas
  • P. Kofinas
  • P. L. Cheng
  • Robert E. Cohen

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Block Copolymers
  • Block Polymers
  • Catalysts
  • Chemical Synthesis
  • Chemistry
  • Coordination Complexes
  • Copolymers
  • Dielectric Polymers
  • Electron Microscopy
  • Macromolecules
  • Phase Diagrams
  • Polymers
  • Ruthenium
  • Scattering
  • Transition Metals
  • Transmission Electron Microscopy
  • Two Dimensional

Fields of Study

  • Chemistry
  • Materials science

Readers

  • Polymer Science and Technology
  • Strategic Security Studies

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene