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Multi-modal commutative dynamics in semi-crystalline polymers undergoing multiple shape memory behavior
Xiaodong Wang,
Haibao Lu,
Galina Gorbacheva,
Mokarram Hossain 
,
Yong Qing Fu
,
Yong Qing Fu
Smart Materials and Structures, Volume: 30, Issue: 4, Start page: 045003
Swansea University Author:
Mokarram Hossain
-
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DOI (Published version): 10.1088/1361-665x/abe4e5
Abstract
Semi-crystalline polymers offer great opportunities for design and tuning of multi-shape memory effect (multi-SME) through their programmable melting transitions. However, coexistence of amorphous and crystalline components as well as their multiple interfaces results in complex cooperative dynamics...
| Published in: | Smart Materials and Structures |
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| ISSN: | 0964-1726 1361-665X |
| Published: |
IOP Publishing
2021
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa56240 |
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| Abstract: |
Semi-crystalline polymers offer great opportunities for design and tuning of multi-shape memory effect (multi-SME) through their programmable melting transitions. However, coexistence of amorphous and crystalline components as well as their multiple interfaces results in complex cooperative dynamics. In this study, we propose a one-dimensional (1D) multi-modal dynamic model to describe the commutative and cooperative dynamics in semi-crystalline shape memory polymers (SMPs) undergoing multi-SME. A three-phase model and Takayanagi principle are firstly applied to study the cooperative dynamics of amorphous/crystalline components and their interfaces. Phase transition theory and modified Avrami theory are used to model the cooperative dynamics of glass and melting transitions, respectively. Commutative dynamics and glass/melting transitions are further investigated to achieve on-demand multi-SME and shape recovery behaviors. Finally, effectiveness of the newly established model was demonstrated to predict triple-SMEs and quadruple-SMEs in semi-crystalline polymers reported in literature, and the theoretically obtained results show good agreements with the experimental ones. |
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| Keywords: |
semi-crystalline polymer, commutative dynamics, shape memory effect |
| College: |
Faculty of Science and Engineering |
| Funders: |
National Natural Science Foundation of China (NSFC) under Grant No. 11725208 and UK Newton Mobility Grant (IE161019) through Royal Society and NFSC. |
| Issue: |
4 |
| Start Page: |
045003 |