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On demand shape memory polymer via light regulated topological defects in a dynamic covalent network

The ability to undergo bond exchange in a dynamic covalent polymer network has brought many benefits not offered by classical thermoplastic and thermoset polymers. Despite the bond exchangeability, the overall network topologies for existing dynamic networks typically cannot be altered, limiting the...

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Autores principales: Miao, Wusha, Zou, Weike, Jin, Binjie, Ni, Chujun, Zheng, Ning, Zhao, Qian, Xie, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7450050/
https://www.ncbi.nlm.nih.gov/pubmed/32848146
http://dx.doi.org/10.1038/s41467-020-18116-1
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author Miao, Wusha
Zou, Weike
Jin, Binjie
Ni, Chujun
Zheng, Ning
Zhao, Qian
Xie, Tao
author_facet Miao, Wusha
Zou, Weike
Jin, Binjie
Ni, Chujun
Zheng, Ning
Zhao, Qian
Xie, Tao
author_sort Miao, Wusha
collection PubMed
description The ability to undergo bond exchange in a dynamic covalent polymer network has brought many benefits not offered by classical thermoplastic and thermoset polymers. Despite the bond exchangeability, the overall network topologies for existing dynamic networks typically cannot be altered, limiting their potential expansion into unexplored territories. By harnessing topological defects inherent in any real polymer network, we show herein a general design that allows a dynamic network to undergo rearrangement to distinctive topologies. The use of a light triggered catalyst further allows spatio-temporal regulation of the network topology, leading to an unusual opportunity to program polymer properties. Applying this strategy to functional shape memory networks yields custom designable multi-shape and reversible shape memory characteristics. This molecular principle expands the design versatility for network polymers, with broad implications in many other areas including soft robotics, flexible electronics, and medical devices.
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spelling pubmed-74500502020-09-02 On demand shape memory polymer via light regulated topological defects in a dynamic covalent network Miao, Wusha Zou, Weike Jin, Binjie Ni, Chujun Zheng, Ning Zhao, Qian Xie, Tao Nat Commun Article The ability to undergo bond exchange in a dynamic covalent polymer network has brought many benefits not offered by classical thermoplastic and thermoset polymers. Despite the bond exchangeability, the overall network topologies for existing dynamic networks typically cannot be altered, limiting their potential expansion into unexplored territories. By harnessing topological defects inherent in any real polymer network, we show herein a general design that allows a dynamic network to undergo rearrangement to distinctive topologies. The use of a light triggered catalyst further allows spatio-temporal regulation of the network topology, leading to an unusual opportunity to program polymer properties. Applying this strategy to functional shape memory networks yields custom designable multi-shape and reversible shape memory characteristics. This molecular principle expands the design versatility for network polymers, with broad implications in many other areas including soft robotics, flexible electronics, and medical devices. Nature Publishing Group UK 2020-08-26 /pmc/articles/PMC7450050/ /pubmed/32848146 http://dx.doi.org/10.1038/s41467-020-18116-1 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Miao, Wusha
Zou, Weike
Jin, Binjie
Ni, Chujun
Zheng, Ning
Zhao, Qian
Xie, Tao
On demand shape memory polymer via light regulated topological defects in a dynamic covalent network
title On demand shape memory polymer via light regulated topological defects in a dynamic covalent network
title_full On demand shape memory polymer via light regulated topological defects in a dynamic covalent network
title_fullStr On demand shape memory polymer via light regulated topological defects in a dynamic covalent network
title_full_unstemmed On demand shape memory polymer via light regulated topological defects in a dynamic covalent network
title_short On demand shape memory polymer via light regulated topological defects in a dynamic covalent network
title_sort on demand shape memory polymer via light regulated topological defects in a dynamic covalent network
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7450050/
https://www.ncbi.nlm.nih.gov/pubmed/32848146
http://dx.doi.org/10.1038/s41467-020-18116-1
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