このエントリーをはてなブックマークに追加
ID 60242
Author
Watanabe, Takaichi Department of Applied Chemistry, Graduate School of Natural Science, Okayama University ORCID Kaken ID researchmap
Takahashi, Ruri Department of Applied Chemistry, Graduate School of Natural Science, Okayama University
Ono, Tsutomu Department of Applied Chemistry, Graduate School of Natural Science, Okayama University ORCID Kaken ID publons researchmap
Abstract
We report the preparation of tough, thermally stable, and water-resistant double-network (DN) ion gels, which consist of a partially-clustered silica nanoparticle network and poly(ionic liquid) (PIL) network holding an ionic liquid. Silica nanoparticles/poly([Evim][Tf2N]) DN ion gels are prepared by photo-induced radical polymerisation of [Evim][Tf2N] in a mixture containing silica nanoparticles, [Bmim][Tf2N], ionic liquid based cross-linker [(VIM)2C4][Tf2N]2, and ethyl acetate, followed by subsequent solvent evaporation. Tensile strength measurements show that the mechanical properties of the PIL DN ion gels were higher than those of the PIL single-network (SN) ion gel. A rheological study indicates that an enhancement in mechanical strength of the PIL DN ion gels can be achieved when silica nanoparticles form partial clusters in [Bmim][Tf2N]. The cyclic stress–strain measurement of the PIL DN ion gels shows hysteresis loops, suggesting that the silica nanoparticle clusters rupture and dissipate the loading energy when the PIL DN ion gels undergo a large deformation. The fracture strength and Young's modulus of the PIL DN ion gels increase as the diameter of the silica nanoparticles is decreased. Thermogravimetric analysis measurement shows that the PIL DN ion gel has a high decomposition temperature of approximately 400 °C. Moreover, the swelling test shows that the PIL DN ion gel possesses an excellent water-resistant property because of the hydrophobic nature of the PIL backbone. We believe that such tough, thermally stable, and water-resistant PIL DN ion gels can be used as carbon dioxide separation membranes, sensors, and actuators for soft robotics.
Note
This fulltext is available in Dec.2020.
Published Date
2019-12-23
Publication Title
Soft Matter
Volume
volume16
Issue
issue6
Publisher
Royal Society of Chemistry
Start Page
1572
End Page
1581
ISSN
1744-683X
NCID
AA12068335
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
File Version
author
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1039/C9SM02213A
Funder Name
Japan Science and Technology Agency
助成番号
18H03854
19K15340