A facile synthetic strategy to polysiloxanes containing sulfonyl side groups with high dielectric permittivity

Dünki, Simon J.; Cuervo‐Reyes, Eduardo; Opris, Dorina M.

doi:10.1039/c6py01917j

Cited by 70 publications

(63 citation statements)

References 30 publications

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“…A polymer class that meets this requirement is polysiloxane. Their modification by the polar nitrile groups allowed formation of elastomers with ε′ of about 18, which is amongst the highest dielectric permittivity value reported for polysiloxanes . Furthermore, they actuate at rather low electric fields of 10 V µm −1 .…”

Section: The Amount Of Reagents Used For the Synthesis Of Thin Filmsmentioning

confidence: 91%

“…Their modification by the polar nitrile groups allowed formation of elastomers with ε′ of about 18, which is amongst the highest dielectric permittivity value reported for polysiloxanes. [22][23][24][25] Furthermore, they actuate at rather low electric fields of 10 V µm −1 . While all this looks attractive, it turned out to be challenging to process the material into sufficiently thin films under technologically relevant Elastomers The lack of soft high-dielectric-permittivity elastomers responsive to a low voltage has been a long-standing obstacle for the industrialization of dielectric elastomer actuators (DEA) technology.…”

Section: Doi: 101002/marc201900205mentioning

confidence: 99%

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Artificial Muscles: Dielectric Elastomers Responsive to Low Voltages

Sheima

Caspari

Opris

2019

Macromol. Rapid Commun.

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The lack of soft high‐dielectric‐permittivity elastomers responsive to a low voltage has been a long‐standing obstacle for the industrialization of dielectric elastomer actuators (DEA) technology. Here, elastomers that not only possess a high dielectric permittivity of 18 and good elastic and insulating properties but are also processable in very thin films by conventional techniques are reported. Additionally, the elastic modulus can be easily tuned. A soft elastomer with a storage modulus of E = 350 kPa, a tanδ = 0.007 at 0.05 Hz, and a lateral actuation strain of 13% at 13 V µm−1 is prepared. A stable lateral actuation over 50 000 cycles at 10 Hz is demonstrated. A stiffer elastomer with an E = 790 kPa, a tanδ = 0.0018 at 0.05 Hz, a large out‐of‐plane actuation at 41 V µm−1, and breakdown fields of almost 100 V µm−1 is also developed. Such breakdown fields are the highest ever reported for a high‐permittivity elastomer. Additionally, actuators operable at a voltage as low as 200 V are also demonstrated. Because the materials used are cheap and easily available, and the chemical reactions leading to them allow upscaling, they have the potential to advance the DEA technology.

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Section: The Amount Of Reagents Used For the Synthesis Of Thin Filmsmentioning

confidence: 91%

Section: Doi: 101002/marc201900205mentioning

confidence: 99%

Artificial Muscles: Dielectric Elastomers Responsive to Low Voltages

Sheima

Caspari

Opris

2019

Macromol. Rapid Commun.

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“…Sulfonyl groups have a largest dipole‐dipole interactions compared to other side‐chains which improve sticking behavior . Moreover, chemical modification of polymers with lateral polar groups increases their dielectric permittivity compared to polypyrrole with sulfonyl groups . PTSP is one of the important sulfonyl compounds.…”

Section: Introductionmentioning

confidence: 99%

“…15 Moreover, chemical modification of polymers with lateral polar groups increases their dielectric permittivity compared to polypyrrole with sulfonyl groups. 16 PTSP is one of the important sulfonyl compounds. In the literature, previous studies [17][18][19] for the polymerization of 1-p-(tolylsulfonyl) pyrrole have been conducted through the electrochemical polymerization.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of poly[1‐p (tolylsulfonyl) pyrrole] via Ce (IV)‐pyrrole redox initiating system and polyacrylonitrile blended nanofibers

İşmar

Sarac

2018

Polymers for Advanced Techs

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Chemical polymerization of monomers of electroactive polymers and their processability have some challenges. Chemical polymerization of 1‐p‐(tolylsulfonyl) pyrrole has been realized first time by using Ce (IV)‐pyrrole redox initiating system to obtain poly (1‐p‐[tolylsulfonyl)pyrrole]. Moreover, the achieved polymer was used as a precursor for electrospinning, and their solutions with DMF were used to fabricate nano and submicron fibers via electrospinning method. Polymerization conditions were followed with UV–visible spectroscopy. Surface morphologies were examined with scanning electron microscopy, and elemental analysis measurements were obtained via scanning electron microscopy/energy‐dispersive X‐ray. Attenuated total reflection spectroscopy was used to record the characteristic peaks of the nanofiber webs before and after polymerization. Surface morphology of the polymer domains was examined with atomic force microscopy. Inherently conductive polymer, poly (1‐p‐[tolylsulfonyl)pyrrole] was successfully combined with the PAN and were fabricated to obtain nanofiber webs.

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“…Polysiloxanes are the most important class of polymers with a non‐carbon backbone, which have demonstrated various attractive properties such as good heat resistance, excellent antiweatherability, impressive resistance to ozone, excellent mechanical and dielectric properties . These unique characteristics make the polysiloxanes a better candidate in the electronics, aerospace, and other industries …”

Section: Introductionmentioning

confidence: 99%

Effect of Polymerizable Photoinitiators on the UV‐polymerization behaviors of photosensitive polysiloxane

Jiang

Zhang

Zhao

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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In this contribution, three polymerizable benzophenone photoinitiators containing maleimide group including 4‐maleimidebenzophenone (MBP), 4‐chlorine‐4′‐maleimide benzophenone (CMBP), and 4‐maleimide‐4′‐[(4‐maleimide)thiophenyl]benzophenone (MMTBP) were designed and synthesized to enhance the polymerization degree of photosensitive polysiloxane containing methacryloxy active groups (MAPSO). The polymerization behaviors of the MAPSO cured by different photoinitiators were investigated using Fourier transform infrared (FTIR). It was noted that the MAPSO initiated by MMTBP showed a high carbon–carbon double bond conversion above 80% because of the existence of thiophenyl group which could generate more radicals from the photolysis reaction at the CS bond. In addition, the thermal stability of the UV‐cured MAPSO were studied by thermogravimetric analysis (TGA), the result showed that the initial 5% mass loss (T5%) and residual weight percent at 800 °C in nitrogen of the UV‐cured MAPSO initiated by MMTBP systems was 200 °C and 33.8%. Thus, this work provides a new perspective and efficient strategy to improve the polymerization degree of UV‐curable polysiloxanes with carbon–carbon double bonds. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 1696–1705

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A facile synthetic strategy to polysiloxanes containing sulfonyl side groups with high dielectric permittivity

Abstract: Novel polysiloxanes containing sulfonyl side groups with high dielectric permittivity by thiol–ene post-polymerization reactions are presented.

Cited by 70 publications

References 30 publications

Artificial Muscles: Dielectric Elastomers Responsive to Low Voltages

Artificial Muscles: Dielectric Elastomers Responsive to Low Voltages

Facile synthesis of poly[1‐p (tolylsulfonyl) pyrrole] via Ce (IV)‐pyrrole redox initiating system and polyacrylonitrile blended nanofibers

Effect of Polymerizable Photoinitiators on the UV‐polymerization behaviors of photosensitive polysiloxane

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