Abstract
Multi-shape memory effect (multi-SME) in amorphous polymers has attracted great attention due to their complex thermal transitions and multi-step recovery behavior. Many experimental studies have been reported for synthesis, characterization, testing and demonstration of the multi-SME. However, theoretical approaches have seldom been applied although they are critically needed to understand the principles and predict the behavior of the multi-SME in various amorphous polymers. In this study, a new thermomechanical model was proposed to describe the thermo-/chemo-responsive multi-SME of amorphous polymers with tunable segment compositions. Based on the Weibull statistical model, a new constitutive framework was established to describe temperature-, stretch ratio- and strain-dependent behaviors of thermo-/chemo-responsive multi-SME. Finally, this newly proposed model was applied to quantitatively identify the crucial factors for the thermo-/chemo-responsive shape recovery behaviors, which have been verified by the reported experimental data.
| Original language | English |
|---|---|
| Pages (from-to) | 298-305 |
| Number of pages | 8 |
| Journal | Composites Part B: Engineering |
| Volume | 160 |
| Early online date | 17 Oct 2018 |
| DOIs | |
| Publication status | Published - 1 Mar 2019 |
Keywords
- thermomechanical model
- composite
- multi-shape memory effect