Characterization and strain-energy-function-based modeling of the thermomechanical response of shape-memory polymers

Sesha S. Pulla, Mohammad Souri, Haluk E. Karaca, Y. Charles Lu

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Shape-memory polymers (SMPs) are an emerging class of active polymers that can be used on a wide range of reconfigurable structures and actuation devices. In this study, an epoxy-based SMP was synthesized, and its thermomechanical behaviors were comprehensively characterized. The stress-strain behavior of the SMP was determined to be nonlinear, finite deformation in all regions. Strain-energy-based models were used to capture the complicated stress-strain behavior and shape-recovery response of the SMP. Among various strain energy functions, the stretch-based Ogden model provided the best fit to the experimental observations. Compared to the sophisticated models developed for SMPs, the strain-energy-based model was found to be reliable and much easier to use for practical SMP designs.

Original languageEnglish
Article number41861
JournalJournal of Applied Polymer Science
Volume132
Issue number18
DOIs
StatePublished - May 1 2015

Bibliographical note

Publisher Copyright:
© 2015 Wiley Periodicals, Inc.

Keywords

  • properties and characterization
  • stimuli-sensitive polymers
  • theory and modeling

ASJC Scopus subject areas

  • General Chemistry
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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