Citation: SUI Yan, ZHOU Kai-Hao, HUANG Jian-Gen, ZHU Ying, ZENG Gui-Bing, OUYANG Shu-Xia. Enhanced Dielectric and Ferroelectric Properties of Core-Shell Structure of SrTiO₃/PVDF Composite Films Cross-Linked with Silane Coupling Agent[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(11): 2024-2030. doi: 10.11862/CJIC.2017.231 shu

Enhanced Dielectric and Ferroelectric Properties of Core-Shell Structure of SrTiO₃/PVDF Composite Films Cross-Linked with Silane Coupling Agent

Jiangxi Province Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi 343009, China

Corresponding author: SUI Yan, ysui@163.com
Received Date: 8 June 2017
Revised Date: 25 August 2017

Figures(10)

Core-shell structure of SrTiO₃/PVDF composite films cross-linked with silane coupling agent 3-aminopropyltriethoxysilane (3-APTS) were prepared by solution casting method and characterized by XRD, FTIR, TG, DSC, SEM, dielectric and ferroelectric test. SrTiO₃ (ST) can be homogeneously distributed into PVDF matrix without obvious agglomeration in the presence of silane coupling agent, which may be related to the formation of core-shell structure in which 3-APTS acts as a cross-linker between polymer and inorganic material. The introduction of ST is helpful to improve the crystallinity, but will lead to a slight decrease in the electroactive β-phase content of composite films. The dielectric constant of composite film will increase up to 2.5 times larger than that of neat PVDF when the mass content of ST is up to 30%, and without leading to obvious increase of dielectric losses. Meanwhile, the P_s value of this film is increased up to about two times larger than that of pure PVDF. Our study suggests that the incorporation of surface modified ST into PVDF matrix is a useful way to obtain well dispersed film and improve its dielectric and ferroelectric property.
- poly(vinylidene fluoride),
- composite films,
- SrTiO₃,
- dielectric,
- ferroelectric
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Enhanced Dielectric and Ferroelectric Properties of Core-Shell Structure of SrTiO3/PVDF Composite Films Cross-Linked with Silane Coupling Agent

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通讯作者: 陈斌, bchen63@163.com

Enhanced Dielectric and Ferroelectric Properties of Core-Shell Structure of SrTiO₃/PVDF Composite Films Cross-Linked with Silane Coupling Agent