Dielectric properties of poly(4-vinylphenol) with embedded PbO nanoparticles

Abstract

An organic/inorganic nanocomposite film was synthesized using poly(4-vinylphenol) (PVPh) as an organic insulating polymer and PbO nanoparticles as a high-k inorganic material to serve as an organic insulator with enhanced dielectric properties. PbO nanoparticles were dispersed into propylene glycol monomethyl ether acetate, and a solution of PbO/PVPh nanocomposite was prepared by adding a crosslinker. The PbO nanoparticle content within the PVPh polymer matrix was varied, and the effects of this variation upon the properties of the resulting nanocomposite films were studied, including the properties of surface morphology, surface bonding state and dielectric characteristic. The dielectric constant increased with increasing PbO content, reaching 9.2 at 1 MHz and with dielectric loss below 0.09 for the PbO content of 6 vol%. Furthermore, the leakage current increased to only 1.3 × 10 À8 A cm À1 at the highest nanoparticle loadings, compared to the 7.2 × 10 À9 of pristine PVPh. The addition of PbO nanoparticles was found to effectively suppress the absorption of moisture on the surface of PbO/PVPh nanocomposite, although it also increased surface roughness, owing to the agglomeration and particulation of PVPh arising from an anchoring effect of the PbO nanoparticles.

Ultrasonically assisted synthesis of lead oxide nanoflowers using ball milling

“…The size and shape of these structures can be controlled using capping ligand as reported elsewhere [11,12]. It was reported that nanocomplexing with polymer can be used to combine the desirable properties of nanoparticles and polymer to be used in the Organic Thin Film Transistor (OTFT) [13]. In a similar way, the high surface area of semiconducting PbO nanostructures and electrical conductivity of polymers can be combined to be applied in the photovoltaic device.…”

Directly-Patternable Bi2O3 Nanoparticle for Polymer Nanocomposite Capacitor

“…Recently, polymer-based materials have attracted attention for flexible electronic devices. Their flexibility, low cost, fast discharge rate, low dielectric loss, and simple manufacturing process make it possible to apply them to capacitors [5][6][7][8][9][10]. Among them, polyvinylidene fluoride (PVDF) shows a relatively high permittivity (k = 5-10), superhydrophobicity with low surface energy, remarkable mechanical strength, and chemical resistance.…”