Preparation and electrorheological behavior of anisotropic titanium oxide/polyaniline core/shell nanocomposite

Tian, Xiaoli; He, Kai; Wang, Chengwei; Wen, Qingkun; Wang, Baoxiang; Yu, Shoushan; Hao, Chuncheng; Chen, Kezheng; Liu, Qingquan

doi:10.1016/j.compscitech.2016.10.026

Cited by 37 publications

(18 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tian et al [ 117 ] synthesized an anisotropic peanut-like TiO 2 /PANI core/shell nanocomposite via a three-step method. First, monodispersed amorphous TiO 2 nanospheres were prepared by the controlled hydrolysis of tetrabutyl titanate, similar to that reported by Wang et al [ 116 ]; the reaction equation is shown below: Ti(OC 4 H 9 ) 4 + 4H 2 O = Ti(OH) 4 + 4C 4 H 9 OH …”

Section: Polyaniline-coated Core-shell Structured Microspheresmentioning

confidence: 99%

“…On the other hand, as-obtained monodispersed TiO 2 nanospheres are amorphous and have hydroxyl groups (–OH) on their surface, while anisotropic peanut-like TiO 2 nanospheres were obtained using a weak acid to etch the monodispersed TiO 2 spheres. Tian et al [ 117 ] used glacial acetic acid (GAA) and oleic acid. Figure 4 a,b show SEM images of amorphous TiO 2 and Figure 4 c–f show SEM images of anisotropic peanut-like TiO 2 obtained using glacial acetic acid and oleic acid, respectively.…”

Section: Polyaniline-coated Core-shell Structured Microspheresmentioning

confidence: 99%

“…SEM ( g , h ) and TEM ( i , j ) images of anisotropic peanut-like titanium TiO 2 /PANI core/shell nanocomposite. (Tian et al [ 117 ], Copyright Elsevier, 2016).…”

Section: Figures Schemes and Tablesmentioning

confidence: 99%

See 2 more Smart Citations

Polyaniline Coated Core-Shell Typed Stimuli-Responsive Microspheres and Their Electrorheology

Dong¹,

Han²,

Choi³

2018

Polymers

View full text Add to dashboard Cite

Functional core-shell-structured particles have attracted considerable attention recently. This paper reviews the synthetic methods and morphologies of various electro-stimuli responsive polyaniline (PANI)-coated core-shell-type microspheres, including PANI-coated Fe 3 O 4 , SiO 2 , Fe 2 O 3 , TiO 2 , poly(methyl methacrylate), poly(glycidyl methacrylate), and polystyrene along with their electrorheological (ER) characteristics when prepared by dispersing these particles in an insulating medium. In addition to the various rheological characteristics and their analysis, such as shear stress and yield stress of their ER fluids, this paper summarizes some of the mechanisms proposed for ER fluids to further understand the responses of ER fluids to an externally applied electric field.

show abstract

Section: Polyaniline-coated Core-shell Structured Microspheresmentioning

confidence: 99%

Section: Polyaniline-coated Core-shell Structured Microspheresmentioning

confidence: 99%

See 1 more Smart Citation

Polyaniline Coated Core-Shell Typed Stimuli-Responsive Microspheres and Their Electrorheology

Dong¹,

Han²,

Choi³

2018

Polymers

View full text Add to dashboard Cite

show abstract

“…With the rapid development of ERFs , various types of materials have been used by researchers as electrorheological (ER) materials, such as common inorganic or organic composite materials, conductive polymers, and other materials. [7][8][9][10][11] Although many devices using ERFs as the core technology are in their infancy, there is still a long way to go before they can be fully commercialized as we expect. The main factor hindering our achievement of this goal is that the ERF stability and the required yield response force we are studying do not meet our industrial requirements.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Electrorheological Properties of Peanut‐Like Hollow Core–Shell Structure TiO₂@SiO₂ Nanoparticles

et al. 2021

Self Cite

View full text Add to dashboard Cite

Although titanium oxide has a high dielectric constant, ordinary titanium oxides are not a good electrorheological (ER) fluid material. Herein, hollow peanut-like titanium oxide spheres are synthesized by hydrothermal method, and then coated with silicon oxide to form core-shell hollow TiO 2 @SiO 2 spheres. The structure is characterized by different methods, and the TiO 2 @SiO 2 composite particles are dispersed in silicone oil to prepare an ER suspension. The ER effect of 10% TiO 2 @SiO 2 -based ER fluid under different electric field strengths is tested, and its performance is analyzed. The results show that the coated particles significantly enhance the current meter performance. The shear stress value exceeds 200 Pa at an electric field strength of 3.0 kV mm À1 . The shear stress, shear viscosity, switching effect, and dielectric behavior of the base ER fluid are studied. And, the cause of this strong ER effect is studied. In the end, it is found that TiO 2 @SiO 2 peanut-shaped composite core-shell particles have a good ER effect and which is a kind of ER candidate material with simple preparation and development prospect.

show abstract

“…Among the various potential electro-responsive materials for ER suspensions, conducting polymers, such as polyaniline (PANI), polydiphenylamine (PDPA), and polypyrrole (PPy) [ 20 , 21 , 22 , 23 ], have been widely adopted because of their controllable electrical conductivity and dielectric properties. In addition, conductive polymer/inorganic composite particles with various shapes have been introduced to improve ER performance.…”

Section: Introductionmentioning

confidence: 99%

Magnetite/Poly(ortho-anisidine) Composite Particles and Their Electrorheological Response

Lee

Choi

2021

Materials

View full text Add to dashboard Cite

Magnetic and semiconducting Fe3O4/poly(o-anisidine) (POA) core/shell composite particles were fabricated by an oxidation process using Fe3O4 synthesized separately. The dispersion stability in a liquid medium and the electrical conductivity of synthesized particles were improved because of the conductive POA polymeric shell. The morphological, microstructural, compositional/elemental, and thermal behaviors of the particles were characterized using SEM with energy dispersive X-ray spectroscopy, TEM, XRD, and thermogravimetric analysis, respectively. A smart electro-magneto-rheological suspension containing Fe3O4/POA particles with two functionalities, magnetism and conductivity, was prepared. Its electrorheological properties were investigated at different electric field strengths using a rotational rheometer. Without an electric field, the sample demonstrated typical Newtonian fluid behavior, as expected. However, while under the electric field, it exhibited a solid-like behavior, and the dynamic (or elastic) yield stress of the ER fluid increased linearly as a function of the electric field strength in a power-law function with an index of 2.0, following the polarization mechanism.

show abstract

Preparation and electrorheological behavior of anisotropic titanium oxide/polyaniline core/shell nanocomposite

Cited by 37 publications

References 45 publications

Polyaniline Coated Core-Shell Typed Stimuli-Responsive Microspheres and Their Electrorheology

Polyaniline Coated Core-Shell Typed Stimuli-Responsive Microspheres and Their Electrorheology

Preparation and Electrorheological Properties of Peanut‐Like Hollow Core–Shell Structure TiO₂@SiO₂ Nanoparticles

Magnetite/Poly(ortho-anisidine) Composite Particles and Their Electrorheological Response

Contact Info

Product

Resources

About

Preparation and electrorheological behavior of anisotropic titanium oxide/polyaniline core/shell nanocomposite

Cited by 37 publications

References 45 publications

Polyaniline Coated Core-Shell Typed Stimuli-Responsive Microspheres and Their Electrorheology

Polyaniline Coated Core-Shell Typed Stimuli-Responsive Microspheres and Their Electrorheology

Preparation and Electrorheological Properties of Peanut‐Like Hollow Core–Shell Structure TiO2@SiO2 Nanoparticles

Magnetite/Poly(ortho-anisidine) Composite Particles and Their Electrorheological Response

Contact Info

Product

Resources

About

Preparation and Electrorheological Properties of Peanut‐Like Hollow Core–Shell Structure TiO₂@SiO₂ Nanoparticles