Enhanced response of titanium doped iron(ii) oxalate under electric field DOI Creative Commons
Chunde Li, Hua Wei, Xueyan Hu

et al.

RSC Advances, Journal Year: 2022, Volume and Issue: 12(49), P. 31959 - 31965

Published: Jan. 1, 2022

Electrorheological (ER) fluid, containing polarized particles within an insulating liquid, represents a smart material, the mechanical properties of which can be altered mainly by electric field. In this work, ER fluids based on cauliflower iron(ii) oxalate doped titanium show excellent rheological and wetting sample co-precipitation method. The morphology is observed SEM molecular structure obtained via XRD FTIR. distribution elements EDS. Owing to lower current density than pure oxalate, optical images obvious chain-like with 2 wt% 5 wt%, respectively, under kV mm-1. Then, these are tested up 3 mm-1 results gratifying property resisting shear different rates (0.1-100 s-1), attributed appearance stable structure. At same time, efficiency switching performance static yield stress fits relevant field strength well. Ultimately, sedimentation ratio from 0 h 600 h.

Language: Английский

Humidity-Induced Self-Assembled Nanostructures via Ion Aggregation in Ionic Linear Polysiloxanes DOI
Mitsuo Hara,

Atsuki Kodama,

Shohei Washiyama

et al.

Macromolecules, Journal Year: 2022, Volume and Issue: 55(11), P. 4313 - 4319

Published: May 3, 2022

Polysiloxanes exhibit practical properties not observed in carbon or carbon–oxygen backbone polymers. Linear ionic polysiloxanes containing an amine hydrochloric salt a humidity-induced self-assembly (HiSA) behavior. HiSA leads to nanoscale structuring by the uptake of absorbed water around aggregates polymer, promoting hydrophilic–hydrophobic phase separation polymer. The resulting polymer forms self-assembled lamellar nanostructure with period ca. 1.6 nm. Herein, we investigate factors affecting Introducing dimethylsiloxane unit into polysiloxane achieves more ordered structure and improves stability at higher humidities. flexibility backbone, formation aggregates, affect This assembly can be characterized as lyotropic liquid crystal formed assistance ion aggregation instead hydrophobic effect aqueous systems ordinary surfactants.

Language: Английский

Citations

11
Self‐assembly, mesomorphic behavior, and ionic conductivity of polymerized ionic liquid crystals with a threshold switching characteristic DOI

Xinqiao Tang,

Xiaolong Chang, Boyan Zhu

et al.

Polymers for Advanced Technologies, Journal Year: 2022, Volume and Issue: 33(12), P. 4317 - 4329

Published: Sept. 7, 2022

Abstract A series of pyridinium‐based polymerized ionic liquid crystals (PILCs) with different anions were synthesized, including poly(pyridinium bromide)s and trifluoroacetate)s, their chemical structure, liquid‐crystalline properties conductivity investigated by many experimental techniques. At low temperature, some PILCs containing less cholesteryl mesogens presented smectic phases; while the more displayed bicontinuous cubic phases. high all showed nematic Compared corresponding based on identical polymer cations, trifluoroacetate)s lower glass transition isotropic temperature. The excellent temperature‐dependent conductivity, making it attractive for applications in temperature‐controlled electronic switches. In phases, Arrhenius‐like behavior, they exhibited Vogel–Fulcher–Tammann‐like behavior

Language: Английский

Citations

3
Self-assembly and magnetorheological performance of Fe3O4-based liquid-crystalline composites DOI

Xinqiao Tang,

Xiaolong Chang, Shuqi Zhang

et al.

Journal of Molecular Liquids, Journal Year: 2022, Volume and Issue: 369, P. 120927 - 120927

Published: Nov. 30, 2022

Language: Английский

Citations

3
Enhanced response of titanium doped iron(ii) oxalate under electric field DOI Creative Commons
Chunde Li, Hua Wei, Xueyan Hu

et al.

RSC Advances, Journal Year: 2022, Volume and Issue: 12(49), P. 31959 - 31965

Published: Jan. 1, 2022

Electrorheological (ER) fluid, containing polarized particles within an insulating liquid, represents a smart material, the mechanical properties of which can be altered mainly by electric field. In this work, ER fluids based on cauliflower iron(ii) oxalate doped titanium show excellent rheological and wetting sample co-precipitation method. The morphology is observed SEM molecular structure obtained via XRD FTIR. distribution elements EDS. Owing to lower current density than pure oxalate, optical images obvious chain-like with 2 wt% 5 wt%, respectively, under kV mm-1. Then, these are tested up 3 mm-1 results gratifying property resisting shear different rates (0.1-100 s-1), attributed appearance stable structure. At same time, efficiency switching performance static yield stress fits relevant field strength well. Ultimately, sedimentation ratio from 0 h 600 h.

Language: Английский

Citations

2