Synthesis of BaTiO<sub>3</sub>nanoparticles as shape modified filler for high dielectric constant ceramic–polymer composite

Kim, Tae-Hee; Lim, Hyunwoo; Lee, Youngkwan; Kim, Baekjin

doi:10.1039/d0ra04196c

Cited by 14 publications

(8 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surfactants or dispersants are commonly applied to improve the surface of nanoparticles [ 44 , 45 ], resulting in uniformly dispersed particles in a polymer matrix. For instance, Kim et al [ 46 ] modified BT particles to prepare nanocomposite, and the obtained thin film materials exhibit good dispersibility and high dielectric strength. In addition, process methods, such as magnetic stirring [ 29 ] and ultrasonic dispersion [ 47 ] are always helpful in enhancing the dispersive property of particles into a polymer matrix.…”

Section: Resultsmentioning

confidence: 99%

Model-Based Dielectric Constant Estimation of Polymeric Nanocomposite

Jian

Zhou²,

Chen

et al. 2022

Polymers

View full text Add to dashboard Cite

The interphase region widely exists in polymer-based nanocomposites, which affects the dielectric properties of the nanocomposites. General models, such as the Knott model, are often used to predict the dielectric constant of nanocomposites, while the model does not take the existence of interphase into account, which leads to a large deviation between the predicted results and the experimental values. In this study, a developed Knott model is proposed by introducing the interphase region and appropriately assuming the properties of the interphase. The modeling results based on the developed model are in good agreement with the experimental data, which verifies the high accuracy of the development model. The influence of nanoparticle loading on the effective volume fraction is further studied. In addition, the effects of the polymer matrix, nanoparticles, interphase dielectric and thickness, nanoparticle size and volume fraction on the dielectric properties of the nanocomposites are also investigated. The results show that polymer matrix or nanoparticles with a high dielectric and thick interphase can effectively improve the dielectric properties of the materials. Small size nanoparticles with high concentrations are more conducive to improving the dielectric properties of the nanocomposites. This study demonstrates that the interphase properties have an important impact on the dielectric properties of nanocomposites, and the developed model is helpful to accurately predict the dielectric constant of polymer-based nanocomposites.

show abstract

Section: Resultsmentioning

confidence: 99%

Model-Based Dielectric Constant Estimation of Polymeric Nanocomposite

Jian

Zhou²,

Chen

et al. 2022

Polymers

View full text Add to dashboard Cite

show abstract

“…Surfactants or dispersants are usually used to modify the surface of ceramic nanoparticles, 38 leading to uniformly dispersed nanoparticles in the polymer matrix. For example, Kim et al 39 used surfacemodified BT nanoparticle-filled composites to obtain thin-film materials with good dispersibility and high dielectric strength. In addition, process methods, for example, magnetic stirring 34 and ultrasonic dispersion 40 are helpful in improving the dispersive properties of BT nanoparticles in the matrix.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

A Developed Rahaman Model for Estimating the Dielectric Permittivity of Polymer–Barium Titanate Nanocomposites

Jian

2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

A developed Rahaman model considering the interphase properties is proposed to estimate the dielectric permittivity of polymer− barium titanate (BT) nanocomposites. In this study, the ceramic BT nanoparticle and the interphase region surrounding the nanoparticle are regarded as an equivalent nanoparticle, which has a core−shell structure. The polymer−BT nanocomposite is assumed to be a homogeneous mixture of the polymer matrix and equivalent nanoparticles. The dielectric permittivity of the polymer−BT nanocomposite is calculated in two steps. First, the dielectric permittivity of the equivalent particle is calculated. Afterward, the dielectric permittivity of the polymer−BT nanocomposite, which is determined by the dielectric permittivity of the polymer substrate and the ceramic nanoparticles, is calculated based on the developed Rahaman model. The modeling results are verified using experimental data to evaluate the accuracy of the proposed method. A good agreement between the experimental data and the modeling results can be achieved by properly assuming the characteristics of the interphase. Furthermore, the influences of the BT particle properties, interphase properties, and matrix properties on the dielectric permittivity of polymer−BT nanocomposites are investigated. This developed Rahaman model is expected to provide a theoretical guideline for the experimental design of polymer−BT nanocomposites with excellent dielectric properties.

show abstract

“…At 40 wt% LM@SiO 2 -NH 2 / PDMS, the dielectric constant (ε′) at 1 kHz is 13.9, which increased by 3.4 times compared to that of pure PDMS. Table S3 † [31][32][33][34][35] compares the dielectric characteristics of polymers from the literature and this study. It is clear that the dielectric constant in this study was 13.9 and the dielectric loss was only 0.006, which overwhelmingly outperformed the literature studies, showing the great advantages of the strategy proposed in this study.…”

Section: Mechanical and Dielectric Properties Of Lm@sio 2 -Nh 2 / Pdmsmentioning

confidence: 99%

Fabrication of core–shell liquid metal@silica nanoparticles for enhanced mechanical, dielectric and thermal properties of silicone rubber

et al. 2023

View full text Add to dashboard Cite

show abstract

Synthesis of BaTiO₃nanoparticles as shape modified filler for high dielectric constant ceramic–polymer composite

Abstract: Coral-like structured barium titanate (BaTiO3) nanoparticles were synthesized as filler for a high dielectric elastomer.

Cited by 14 publications

References 41 publications

Model-Based Dielectric Constant Estimation of Polymeric Nanocomposite

Model-Based Dielectric Constant Estimation of Polymeric Nanocomposite

A Developed Rahaman Model for Estimating the Dielectric Permittivity of Polymer–Barium Titanate Nanocomposites

Fabrication of core–shell liquid metal@silica nanoparticles for enhanced mechanical, dielectric and thermal properties of silicone rubber

Contact Info

Product

Resources

About

Synthesis of BaTiO3nanoparticles as shape modified filler for high dielectric constant ceramic–polymer composite

Abstract: Coral-like structured barium titanate (BaTiO3) nanoparticles were synthesized as filler for a high dielectric elastomer.

Cited by 14 publications

References 41 publications

Model-Based Dielectric Constant Estimation of Polymeric Nanocomposite

Model-Based Dielectric Constant Estimation of Polymeric Nanocomposite

A Developed Rahaman Model for Estimating the Dielectric Permittivity of Polymer–Barium Titanate Nanocomposites

Fabrication of core–shell liquid metal@silica nanoparticles for enhanced mechanical, dielectric and thermal properties of silicone rubber

Contact Info

Product

Resources

About

Synthesis of BaTiO₃nanoparticles as shape modified filler for high dielectric constant ceramic–polymer composite