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Keywords:

  • shape memory polymer;
  • thermomechanical constitution;
  • frozen fraction

Abstract

The thermomechanical constitutive equations are critical for shape memory polymers (SMPs) in analyzing their shape, memory, and recovery responses under different constraints. In this study, a new physical-based, temperature and time-dependent constitutive model was proposed. The deformation mechanisms of this class of functional materials were explained, and the theoretical predicting values by different models were compared with available experimental results. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009