Bimodal Polymer Brush Core-Shell Barium Titanate Nanoparticles: A Strategy for High-Permittivity Polymer Nanocomposites

Yali Qiao; Xiaodong Yin; Lei Wang; Md Sayful Islam; Brian C. Benicewicz; Harry J. Ploehn; Chuanbing Tang

doi:10.1021/acs.macromol.5b02018

Bimodal Polymer Brush Core-Shell Barium Titanate Nanoparticles: A Strategy for High-Permittivity Polymer Nanocomposites

Yali Qiao, Xiaodong Yin, Lei Wang, Md Sayful Islam, Brian C. Benicewicz, Harry J. Ploehn, Chuanbing Tang^*

^*Corresponding author for this work

University of South Carolina

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

This paper presents a novel strategy to modify the surface chemistry of barium titanate (BaTiO₃, BT) with a bimodal population of oligothiophene polymer brushes using step-by-step reversible addition-fragmentation chain transfer (RAFT) polymerization. Compared with a previous strategy based on monomodal surface-tethered brushes, these hybrid nanoparticles, BaTiO₃ coated with bimodal oligothiophene polymer brushes, demonstrate extremely good dispersion behaviors as dielectric nanofillers in a matrix of oligothiophene polymers. These nanodielectric composites exhibit greatly improved dielectric performance and maintain linear displacement-polarization (D-E) profiles under high applied electric fields. This promising bimodal strategy could be generalized to a variety of nanoparticles for the development of novel dielectric nanocomposite systems.

Original language	English
Pages (from-to)	8998-9006
Number of pages	9
Journal	Macromolecules
Volume	48
Issue number	24
DOIs	https://doi.org/10.1021/acs.macromol.5b02018
Publication status	Published - 22 Dec 2015
Externally published	Yes

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title = "Bimodal Polymer Brush Core-Shell Barium Titanate Nanoparticles: A Strategy for High-Permittivity Polymer Nanocomposites",

abstract = "This paper presents a novel strategy to modify the surface chemistry of barium titanate (BaTiO3, BT) with a bimodal population of oligothiophene polymer brushes using step-by-step reversible addition-fragmentation chain transfer (RAFT) polymerization. Compared with a previous strategy based on monomodal surface-tethered brushes, these hybrid nanoparticles, BaTiO3 coated with bimodal oligothiophene polymer brushes, demonstrate extremely good dispersion behaviors as dielectric nanofillers in a matrix of oligothiophene polymers. These nanodielectric composites exhibit greatly improved dielectric performance and maintain linear displacement-polarization (D-E) profiles under high applied electric fields. This promising bimodal strategy could be generalized to a variety of nanoparticles for the development of novel dielectric nanocomposite systems.",

author = "Yali Qiao and Xiaodong Yin and Lei Wang and Islam, \{Md Sayful\} and Benicewicz, \{Brian C.\} and Ploehn, \{Harry J.\} and Chuanbing Tang",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = dec,

day = "22",

doi = "10.1021/acs.macromol.5b02018",

language = "English",

volume = "48",

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journal = "Macromolecules",

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T1 - Bimodal Polymer Brush Core-Shell Barium Titanate Nanoparticles

T2 - A Strategy for High-Permittivity Polymer Nanocomposites

AU - Qiao, Yali

AU - Yin, Xiaodong

AU - Wang, Lei

AU - Islam, Md Sayful

AU - Benicewicz, Brian C.

AU - Ploehn, Harry J.

AU - Tang, Chuanbing

PY - 2015/12/22

Y1 - 2015/12/22

N2 - This paper presents a novel strategy to modify the surface chemistry of barium titanate (BaTiO3, BT) with a bimodal population of oligothiophene polymer brushes using step-by-step reversible addition-fragmentation chain transfer (RAFT) polymerization. Compared with a previous strategy based on monomodal surface-tethered brushes, these hybrid nanoparticles, BaTiO3 coated with bimodal oligothiophene polymer brushes, demonstrate extremely good dispersion behaviors as dielectric nanofillers in a matrix of oligothiophene polymers. These nanodielectric composites exhibit greatly improved dielectric performance and maintain linear displacement-polarization (D-E) profiles under high applied electric fields. This promising bimodal strategy could be generalized to a variety of nanoparticles for the development of novel dielectric nanocomposite systems.

AB - This paper presents a novel strategy to modify the surface chemistry of barium titanate (BaTiO3, BT) with a bimodal population of oligothiophene polymer brushes using step-by-step reversible addition-fragmentation chain transfer (RAFT) polymerization. Compared with a previous strategy based on monomodal surface-tethered brushes, these hybrid nanoparticles, BaTiO3 coated with bimodal oligothiophene polymer brushes, demonstrate extremely good dispersion behaviors as dielectric nanofillers in a matrix of oligothiophene polymers. These nanodielectric composites exhibit greatly improved dielectric performance and maintain linear displacement-polarization (D-E) profiles under high applied electric fields. This promising bimodal strategy could be generalized to a variety of nanoparticles for the development of novel dielectric nanocomposite systems.

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U2 - 10.1021/acs.macromol.5b02018

DO - 10.1021/acs.macromol.5b02018

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JO - Macromolecules

JF - Macromolecules

IS - 24

ER -

Bimodal Polymer Brush Core-Shell Barium Titanate Nanoparticles: A Strategy for High-Permittivity Polymer Nanocomposites

Abstract

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