Abstract
In this paper, barium titanate@zinc phthalocyanine (BT@ZnPc) and graphene oxide (GO) hybrids (BT@ZnPc-GO) connected by calcium ions are prepared by electrostatic adsorption, and then introduced into polyarylene ether nitrile (PEN) to obtain composites with enhanced dielectric and crystallization properties. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) results confirm the successful fabrication of the BT@ZnPc-GO. BT@ZnPc-GO and PEN composites (BT@ZnPc-GO/PENs) are obtained through the solution-casting method. BT@ZnPc-GO demonstrates well compatibility with PEN due to its unique structure and the organic layer of ZnPc at the periphery of BT. On the other hand, BT and GO contribute a high dielectric constant of the composites obtained. In addition, the BT@ZnPc-GO can be used as a nucleating agent to promote the crystallization of the nanocomposites. As a result, The BT@ZnPc-GO/PEN exhibits a dielectric constant of 6.4 at 1 kHz and crystallinity of 21.03% after being isothermally treated at 280 °C for 2 h at the GO content of 0.75 wt %. All these results indicate that the hybrid nanofiller BT@ZnPc-GO can be an effective additive for preparing high-performance PEN-based nanocomposites.
Highlights
Were prepared by electrostatic adsorption between barium titanate@zinc phthalocyanine (BT@ZnPc) and graphene oxide (GO) nanoparticles with the action of nanoparticles were prepared by electrostatic adsorption between BT@ZnPc and GO nanoparticles calcium ions
As different amounts of were gradually dropped into the BT@ZnPc/Ca2+ solution, the BT@ZnPc-GO-1 and BT@ZnPc-GO-2 negatively charged GO/water solution were gradually dropped into the BT@ZnPc/Ca2+ solution, the nanoparticles were successfully prepared by electrostatic attraction between the positively charged
GO contents were successful prepared by electrostatic adsorption nanoparticles with different contents were successful prepared by electrostatic between between BT@ZnPc and GO nanoparticles with the action of calcium ions, and theadsorption
Summary
To fulfill the increasing requirements of the electronics industry, high-temperature-resistant, integrated, flexible and high-k dielectric materials play an increasingly important role in capacitors, electromagnetic interference (EMI) shielding materials and microelectronic components fields [1,2,3].Recently, polymer-based nanocomposites, combing the excellent properties of the polymer matrix and the fillers, have been widely used by the scientific community as high-energy-density films in the electronics industry due to their excellent properties such as their lightness, flexibility, high dielectric constant and excellent thermal stability [4,5,6].As an inorganic filler in a composite material, the ferroelectric ceramics, such as barium titanate (BaTiO3 ), strontiumtitanate (SrTiO3 ), calcium titanate (CaTiO3 ) are generally used to increase the dielectric constant of the polymer [7,8] owing to their outstanding high dielectric distance and low dielectric loss. Most inorganic ceramic nanofillers are extremely easy to agglomerate in the polymer matrix due to their large specific surface area, high surface energy and weak interface interaction, which will seriously affect the mechanical properties and compatibility of the polymer-based. Typically modifications of the ferroelectric ceramic nanofillers are always needed to increase the compatibility with the polymer matrix, thereby reducing the impact on the dielectric [10]. Typicallyproperties modifications the ferroelectric ceramic nanofillers are particles such as particles, graphene,with carbon or matrix, carbon thereby nanotubes is verythe effective always needed to metal increase the compatibility the fibers polymer reducing impact for on increasing dielectric constant of the the polymer system with a particles low addition [11,12]
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