Photo-induced Actuator using Temperature and Light Dual Responsive Azobenzene Containing Ion Gel in Ionic Liquid
Document identifier: oai:DiVA.org:ltu-77247
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10.1016/j.eurpolymj.2019.109446Keyword: Engineering and Technology,
Mechanical Engineering,
Tribology (Interacting Surfaces including Friction, Lubrication and Wear),
Teknik och teknologier,
Maskinteknik,
Tribologi (ytteknik omfattande friktion, nötning och smörjning),
Ionic liquid,
Ion gel,
Actuator,
Azobenzene,
LCST,
Machine Elements,
MaskinelementPublication year: 2020Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: A series of well-defined random copolymers comprising butyl acrylate (BA) and 4-phenylazophenylmethacrylate (AzoMA) (P(AzoMA-r-BA)) are prepared successfully by reversible addition fragmentation chain transfer (RAFT) polymerization. P(AzoMA-r-BA)s show LCST-type phase transition in 1-butyl-3-methylimidazolium bis(trifluoromethanesulfone)amide ([C4mim][NTf2]). LCST depends on the photoisomerization state of azobenzene, as well as on the AzoMA composition in the random copolymers. LCST of (P(cis-AzoMA-r-BA) is significantly higher than that of P(trans-AzoMA-r-BA), because cis-AzoMA and trans-AzoMA behave as solvato-philic and solvato-phobic comonomer, respectively. At a bistable temperature, photo-induced phase separation is completely reversible. Secondly, based on this phenomenon, a thermo- / photo- responsive ion gel (BA-AzoMA ion gel) can be prepared by free radical polymerization of BA and AzoMA using ethylene glycol dimethacrylate (EGDMA) as crosslinker in [C4mim][NTf2]. BA-AzoMA ion gel shows high temperature contraction and low temperature expansion behavior, due to LCST-type phase behavior of polymer system consisting of AzoMA and BA. Contraction temperature of BA-AzoMA ion gel depends on photoisomerization state of the azobenzene group in polymers. At a bistable temperature, photo-induced expansion-contraction is reversible. Finally, a Photo-induced actuator can be realized using BA-AzoMA ion gel at suitable temperatures, featuring reversible bending by alternate irradiating with visible and UV light. The bending behavior is also demonstrated.
Authors
Xiaofeng Ma
College of Science, Nanjing Forestry University, Nanjing, P. R. China. Institute of Polymer Materials, Nanjing Forestry University, Nanjing, P. R. China.
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Xiaoyu Lan
College of Science, Nanjing Forestry University, Nanjing, P. R. China
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Linlin Wu
College of Materials Science and Engineering, Nanjing Tech University, Nanjing, P. R. China
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Lei Wang
Institute of Polymer Materials, Nanjing Forestry University, Nanjing, P. R. China
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Qun Gu
Chemistry Department, Edinboro University of Pennsylvania, Edinboro PA, USA
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Yijun Shi
Luleå tekniska universitet; Maskinelement
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Xiaoli Gu
College of Chemical Engineering, Nanjing Forestry University, Nanjing, P. R. China
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Zhenyang Luo
College of Science, Nanjing Forestry University, Nanjing, P. R. China. Institute of Polymer Materials, Nanjing Forestry University, Nanjing, P. R. China.
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header:
identifier: oai:DiVA.org:ltu-77247
datestamp: 2021-04-19T12:42:08Z
setSpec: SwePub-ltu
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recordContentSource: ltu
recordCreationDate: 2019-12-23
identifier:
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-77247
10.1016/j.eurpolymj.2019.109446
2-s2.0-85076686387
titleInfo:
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lang: eng
title: Photo-induced Actuator using Temperature and Light Dual Responsive Azobenzene Containing Ion Gel in Ionic Liquid
abstract: A series of well-defined random copolymers comprising butyl acrylate (BA) and 4-phenylazophenylmethacrylate (AzoMA) (P(AzoMA-r-BA)) are prepared successfully by reversible addition fragmentation chain transfer (RAFT) polymerization. P(AzoMA-r-BA)s show LCST-type phase transition in 1-butyl-3-methylimidazolium bis(trifluoromethanesulfone)amide (C4mimNTf2). LCST depends on the photoisomerization state of azobenzene as well as on the AzoMA composition in the random copolymers. LCST of (P(cis-AzoMA-r-BA) is significantly higher than that of P(trans-AzoMA-r-BA) because cis-AzoMA and trans-AzoMA behave as solvato-philic and solvato-phobic comonomer respectively. At a bistable temperature photo-induced phase separation is completely reversible. Secondly based on this phenomenon a thermo- / photo- responsive ion gel (BA-AzoMA ion gel) can be prepared by free radical polymerization of BA and AzoMA using ethylene glycol dimethacrylate (EGDMA) as crosslinker in C4mimNTf2. BA-AzoMA ion gel shows high temperature contraction and low temperature expansion behavior due to LCST-type phase behavior of polymer system consisting of AzoMA and BA. Contraction temperature of BA-AzoMA ion gel depends on photoisomerization state of the azobenzene group in polymers. At a bistable temperature photo-induced expansion-contraction is reversible. Finally a Photo-induced actuator can be realized using BA-AzoMA ion gel at suitable temperatures featuring reversible bending by alternate irradiating with visible and UV light. The bending behavior is also demonstrated.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Engineering and Technology
Mechanical Engineering
Tribology (Interacting Surfaces including Friction Lubrication and Wear)
@attributes:
lang: swe
authority: uka.se
topic:
Teknik och teknologier
Maskinteknik
Tribologi (ytteknik omfattande friktion nötning och smörjning)
@attributes:
lang: eng
topic: ionic liquid
@attributes:
lang: eng
topic: ion gel
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lang: eng
topic: actuator
@attributes:
lang: eng
topic: azobenzene
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lang: eng
topic: LCST
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lang: eng
authority: ltu
topic: Machine Elements
genre: Research subject
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lang: swe
authority: ltu
topic: Maskinelement
genre: Research subject
language:
languageTerm: eng
genre:
publication/journal-article
ref
note:
Published
8
Validerad;2020;Nivå 2;2020-01-13 (johcin)
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Ma
Xiaofeng
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affiliation: College of Science Nanjing Forestry University Nanjing P. R. China. Institute of Polymer Materials Nanjing Forestry University Nanjing P. R. China.
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Lan
Xiaoyu
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affiliation: College of Science Nanjing Forestry University Nanjing P. R. China
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Wu
Linlin
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affiliation: College of Materials Science and Engineering Nanjing Tech University Nanjing P. R. China
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Wang
Lei
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affiliation: Institute of Polymer Materials Nanjing Forestry University Nanjing P. R. China
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Gu
Qun
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affiliation: Chemistry Department Edinboro University of Pennsylvania Edinboro PA USA
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Shi
Yijun
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affiliation:
Luleå tekniska universitet
Maskinelement
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yijshi
0000-0001-6085-7880
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Gu
Xiaoli
role:
roleTerm: aut
affiliation: College of Chemical Engineering Nanjing Forestry University Nanjing P. R. China
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namePart:
Luo
Zhenyang
role:
roleTerm: aut
affiliation: College of Science Nanjing Forestry University Nanjing P. R. China. Institute of Polymer Materials Nanjing Forestry University Nanjing P. R. China.
originInfo:
dateIssued: 2020
publisher: Elsevier
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type: host
titleInfo:
title: European Polymer Journal
identifier:
0014-3057
1873-1945
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type: volume
number: 123
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type: artNo
number: 109446
physicalDescription:
form: print
typeOfResource: text