Macroscopic Modeling of A3B15A3 Triblock Copolymers in B Solvent

Abstract

We have performed dynamic density functional theory calculations for an ABA triblock copolymer immersed in a B-attractive solvent. The triblock copolymer was parameterized for poly[styrene-b-(ethylene-co-butylene)-b-styrene] (SEBS), while the solvent was parameterized for the hydrocarbon oil tetradecane (C14). The effect of the solvent concentration and SEB interaction on the morphology was studied. For a 50/50 vol.% mixture of polymer/solvent, we also considered the effect of solvent molecular weight on the morphology, where we observed a transition between micro- and macro-phase separation at a critical molecular weight. Lastly, elastic properties were calculated using a finite-element based mechanical homogenization method.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2010
Accession Number
ADA532985

Entities

People

  • Jan Andzelm
  • Joseph L. Lenhart
  • Tanya L. Chantawansri

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Block Copolymers
  • Butenes
  • Chemistry
  • Copolymers
  • Elastic Properties
  • Ethylenes
  • Mechanical Properties
  • Modulus Of Elasticity
  • Molecular Weight
  • Molecules
  • Phase
  • Phase Diagrams
  • Phase Separation
  • Physical Properties
  • Polymers
  • Transitions

Fields of Study

  • Materials science

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Petroleum Engineering
  • Polymer Science and Technology

Technology Areas

  • Microelectronics