A coupling model for cooperative dynamics in shape memory polymer undergoing multiple glass transitions and complex stress relaxations

摘要: Abstract Modelling multi-shape memory effect (multi-SME) of shape polymers (SMPs) is a critical challenge for fields mathematics/statistics and condensed-matter physics. These SMPs have huge number segments their thermomechanical behaviors are determined by heating history cooperative relaxations (e.g., relaxation all occurs simultaneously). In this study, one-dimensional coupling model was proposed to investigate the dynamics multiple glass transitions SMPs. The overall different tangled in were formulated based on Boltzmann's superposition principle highest transition temperature ( T max ) initial min segments. Dependences properties strains upon parameters , time rate theoretically investigated. Multiple transitions, been well described using newly model. Finally, simulation results compared with experimental data, good agreements between them obtained.