Core-shell structured polyethylene glycol functionalized graphene for energy-storage polymer dielectrics: Combined mechanical and dielectric performances

Yuchao Li; Xueqing Bi; Shuangshuang Wang; Yanhu Zhan; Hong Yuan Liu; Yiu Wing Mai; Chengzhu Liao; Zhouguang Lu; Yaozu Liao

doi:10.1016/j.compscitech.2020.108341

Core-shell structured polyethylene glycol functionalized graphene for energy-storage polymer dielectrics: Combined mechanical and dielectric performances

Yuchao Li
, Xueqing Bi
, Shuangshuang Wang
, Yanhu Zhan
, Hong Yuan Liu
, Yiu Wing Mai
, Chengzhu Liao
, Zhouguang Lu
, Yaozu Liao

Research output: Journal article publication › Journal article › Academic research › peer-review

28 Citations (Scopus)

Abstract

Polydispersed graphene was synthesized by grafting a thin layer of water-soluble amine functionalized polyethylene glycol monomethyl ether (PEG-NH₂). PEG-NH₂ functionalized graphene (PEG@rGO) was then introduced into epoxy resin via a facile solution mixing method. Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) verified that PEG was successfully grafted to the surface of graphene. The obtained PEG@rGO showed excellent dispersibility in solvents when compared to pristine graphene. As a “core-shell” filler, PEG@rGO filled epoxy nanocomposites displayed improved dielectric constant and reduced dielectric loss, exhibiting potential applications in energy storage capacitors. The mechanical strength and final decomposition temperature were also simultaneously increased.

Original language	English
Article number	108341
Journal	Composites Science and Technology
Volume	199
DOIs	https://doi.org/10.1016/j.compscitech.2020.108341
Publication status	Published - 20 Oct 2020
Externally published	Yes

Keywords

Differential scanning calorimetry (DSC)
Electrical properties
Functional composites
Mechanical properties

ASJC Scopus subject areas

Ceramics and Composites
General Engineering

More information

10.1016/j.compscitech.2020.108341

Cite this

@article{5013461010fb45368015a321012c2264,

title = "Core-shell structured polyethylene glycol functionalized graphene for energy-storage polymer dielectrics: Combined mechanical and dielectric performances",

abstract = "Polydispersed graphene was synthesized by grafting a thin layer of water-soluble amine functionalized polyethylene glycol monomethyl ether (PEG-NH2). PEG-NH2 functionalized graphene (PEG@rGO) was then introduced into epoxy resin via a facile solution mixing method. Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) verified that PEG was successfully grafted to the surface of graphene. The obtained PEG@rGO showed excellent dispersibility in solvents when compared to pristine graphene. As a “core-shell” filler, PEG@rGO filled epoxy nanocomposites displayed improved dielectric constant and reduced dielectric loss, exhibiting potential applications in energy storage capacitors. The mechanical strength and final decomposition temperature were also simultaneously increased.",

keywords = "Differential scanning calorimetry (DSC), Electrical properties, Functional composites, Mechanical properties",

author = "Yuchao Li and Xueqing Bi and Shuangshuang Wang and Yanhu Zhan and Liu, \{Hong Yuan\} and Mai, \{Yiu Wing\} and Chengzhu Liao and Zhouguang Lu and Yaozu Liao",

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day = "20",

doi = "10.1016/j.compscitech.2020.108341",

language = "English",

volume = "199",

journal = "Composites Science and Technology",

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Core-shell structured polyethylene glycol functionalized graphene for energy-storage polymer dielectrics: Combined mechanical and dielectric performances. / Li, Yuchao; Bi, Xueqing; Wang, Shuangshuang et al.
In: Composites Science and Technology, Vol. 199, 108341, 20.10.2020.

Research output: Journal article publication › Journal article › Academic research › peer-review

TY - JOUR

T1 - Core-shell structured polyethylene glycol functionalized graphene for energy-storage polymer dielectrics: Combined mechanical and dielectric performances

AU - Li, Yuchao

AU - Bi, Xueqing

AU - Wang, Shuangshuang

AU - Zhan, Yanhu

AU - Liu, Hong Yuan

AU - Mai, Yiu Wing

AU - Liao, Chengzhu

AU - Lu, Zhouguang

AU - Liao, Yaozu

PY - 2020/10/20

Y1 - 2020/10/20

N2 - Polydispersed graphene was synthesized by grafting a thin layer of water-soluble amine functionalized polyethylene glycol monomethyl ether (PEG-NH2). PEG-NH2 functionalized graphene (PEG@rGO) was then introduced into epoxy resin via a facile solution mixing method. Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) verified that PEG was successfully grafted to the surface of graphene. The obtained PEG@rGO showed excellent dispersibility in solvents when compared to pristine graphene. As a “core-shell” filler, PEG@rGO filled epoxy nanocomposites displayed improved dielectric constant and reduced dielectric loss, exhibiting potential applications in energy storage capacitors. The mechanical strength and final decomposition temperature were also simultaneously increased.

AB - Polydispersed graphene was synthesized by grafting a thin layer of water-soluble amine functionalized polyethylene glycol monomethyl ether (PEG-NH2). PEG-NH2 functionalized graphene (PEG@rGO) was then introduced into epoxy resin via a facile solution mixing method. Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) verified that PEG was successfully grafted to the surface of graphene. The obtained PEG@rGO showed excellent dispersibility in solvents when compared to pristine graphene. As a “core-shell” filler, PEG@rGO filled epoxy nanocomposites displayed improved dielectric constant and reduced dielectric loss, exhibiting potential applications in energy storage capacitors. The mechanical strength and final decomposition temperature were also simultaneously increased.

KW - Differential scanning calorimetry (DSC)

KW - Electrical properties

KW - Functional composites

KW - Mechanical properties

UR - https://www.scopus.com/pages/publications/85088218010

U2 - 10.1016/j.compscitech.2020.108341

DO - 10.1016/j.compscitech.2020.108341

M3 - Journal article

AN - SCOPUS:85088218010

SN - 0266-3538

VL - 199

JO - Composites Science and Technology

JF - Composites Science and Technology

M1 - 108341

ER -

Core-shell structured polyethylene glycol functionalized graphene for energy-storage polymer dielectrics: Combined mechanical and dielectric performances

Abstract

Keywords

ASJC Scopus subject areas

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