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Liquid Crystal-Based Organosilicone Elastomers with Supreme Mechanical Adaptability

Elastomers with supreme mechanical adaptability where the increasing stress under continuous deformation is significantly inhibited within a large deformation zone, are highly desired in many areas, such as artificial muscles, flexible and wearable electronics, and soft artificial-intelligence robot...

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Detalles Bibliográficos
Autores principales: Liu, Zhe, Xiong, Yuqi, Hao, Jinghao, Zhang, Hao, Cheng, Xiao, Wang, Hua, Chen, Wei, Zhou, Chuanjian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8880581/
https://www.ncbi.nlm.nih.gov/pubmed/35215702
http://dx.doi.org/10.3390/polym14040789
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author Liu, Zhe
Xiong, Yuqi
Hao, Jinghao
Zhang, Hao
Cheng, Xiao
Wang, Hua
Chen, Wei
Zhou, Chuanjian
author_facet Liu, Zhe
Xiong, Yuqi
Hao, Jinghao
Zhang, Hao
Cheng, Xiao
Wang, Hua
Chen, Wei
Zhou, Chuanjian
author_sort Liu, Zhe
collection PubMed
description Elastomers with supreme mechanical adaptability where the increasing stress under continuous deformation is significantly inhibited within a large deformation zone, are highly desired in many areas, such as artificial muscles, flexible and wearable electronics, and soft artificial-intelligence robots. Such system comprises the advantages of recoverable elasticity and internal compensation to external mechanical work. To obtain elastomer with supreme mechanical adaptability, a novel liquid crystal-based organosilicon elastomer (LCMQ) is developed in this work, which takes the advantages of reversible strain-induced phase transition of liquid crystal units in polymer matrix and the recoverable nano-sized fillers. The former is responsible for the inhibition of stress increasing during deformation, where the external work is mostly compensated by internal phase transition, and the latter provides tunable and sufficient high tensile strength. Such LCMQs were synthesized with 4-methoxyphenyl 4-(but-3-en-1-yloxy)benzoate (MBB) grafted thiol silicone oil (crosslinker-g-MBB) as crosslinking agent, vinyl terminated polydimethylsiloxane as base adhesive, and fumed silica as reinforcing filler by two-step thiol-ene “click” reaction. The obtained tensile strength and the elongation at break are better than previously reported values. Moreover, the resulting liquid crystal elastomers exhibit different mechanical behavior from conventional silicone rubbers. When the liquid crystal content increases from 1% (w/w) to 4% (w/w), the stress plateau for mechanical adaptability becomes clearer. Moreover, the liquid crystal elastomer has no obvious deformation from 25 °C to 120 °C and is expected to be used in industrial applications. It also provides a new template for the modification of organosilicon elastomers.
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spelling pubmed-88805812022-02-26 Liquid Crystal-Based Organosilicone Elastomers with Supreme Mechanical Adaptability Liu, Zhe Xiong, Yuqi Hao, Jinghao Zhang, Hao Cheng, Xiao Wang, Hua Chen, Wei Zhou, Chuanjian Polymers (Basel) Article Elastomers with supreme mechanical adaptability where the increasing stress under continuous deformation is significantly inhibited within a large deformation zone, are highly desired in many areas, such as artificial muscles, flexible and wearable electronics, and soft artificial-intelligence robots. Such system comprises the advantages of recoverable elasticity and internal compensation to external mechanical work. To obtain elastomer with supreme mechanical adaptability, a novel liquid crystal-based organosilicon elastomer (LCMQ) is developed in this work, which takes the advantages of reversible strain-induced phase transition of liquid crystal units in polymer matrix and the recoverable nano-sized fillers. The former is responsible for the inhibition of stress increasing during deformation, where the external work is mostly compensated by internal phase transition, and the latter provides tunable and sufficient high tensile strength. Such LCMQs were synthesized with 4-methoxyphenyl 4-(but-3-en-1-yloxy)benzoate (MBB) grafted thiol silicone oil (crosslinker-g-MBB) as crosslinking agent, vinyl terminated polydimethylsiloxane as base adhesive, and fumed silica as reinforcing filler by two-step thiol-ene “click” reaction. The obtained tensile strength and the elongation at break are better than previously reported values. Moreover, the resulting liquid crystal elastomers exhibit different mechanical behavior from conventional silicone rubbers. When the liquid crystal content increases from 1% (w/w) to 4% (w/w), the stress plateau for mechanical adaptability becomes clearer. Moreover, the liquid crystal elastomer has no obvious deformation from 25 °C to 120 °C and is expected to be used in industrial applications. It also provides a new template for the modification of organosilicon elastomers. MDPI 2022-02-18 /pmc/articles/PMC8880581/ /pubmed/35215702 http://dx.doi.org/10.3390/polym14040789 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Zhe
Xiong, Yuqi
Hao, Jinghao
Zhang, Hao
Cheng, Xiao
Wang, Hua
Chen, Wei
Zhou, Chuanjian
Liquid Crystal-Based Organosilicone Elastomers with Supreme Mechanical Adaptability
title Liquid Crystal-Based Organosilicone Elastomers with Supreme Mechanical Adaptability
title_full Liquid Crystal-Based Organosilicone Elastomers with Supreme Mechanical Adaptability
title_fullStr Liquid Crystal-Based Organosilicone Elastomers with Supreme Mechanical Adaptability
title_full_unstemmed Liquid Crystal-Based Organosilicone Elastomers with Supreme Mechanical Adaptability
title_short Liquid Crystal-Based Organosilicone Elastomers with Supreme Mechanical Adaptability
title_sort liquid crystal-based organosilicone elastomers with supreme mechanical adaptability
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8880581/
https://www.ncbi.nlm.nih.gov/pubmed/35215702
http://dx.doi.org/10.3390/polym14040789
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