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所属单位：材料科学与技术学院

发表刊物：JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS

关键字：HIGH-PERMITTIVITY POLYMER CONSTANT SURFACE MONOLAYERS NANOTUBES PRESSURE GRAPHENE OXIDE FILM

摘要：Zero-dimensional nickel nanosphere (0-D NiNS), one-dimensional silver nanowire (1-D AgNW) and two-dimensional silver nanoplate (2-D AgNP) were prepared and studied as conductive nanofiller within flexible dielectric poly(vinylidene fluoride) (PVDF) matrix. Hexadecylphosphonic acid (HDPA) modifiers were functionalized onto the surface of those nanometals. X-ray photoelectron spectroscopy (XPS) verified the functionalization of organophosphonic acid surface modification agent. X-ray diffraction characterization (XRD) suggested the surface functionalization did not change the crystal structure of nanometals. The organic dielectric surface modified layer not only acted as interparticle barriers to prevent nanometals from direct connection but also produced excellent compatibility between the fillers and the polymer matrix and ensures the dispersion of fillers in the polymer matrix. Fourier transform infrared spectroscopy (FT-IR) spectra information indicated the increase of electro-active beta-phase of PVDF composites after doping of nanometals and surface functionalization of filler. Among all the PVDF composites, dielectric materials with HDPA functionalized AgNP as fillers have the best dielectric performance. The good dielectric performance could be triggered by relatively smaller size effect, parallel micro-capacitor microstructure, particular morphology and large-small nanosize co-doping way.

ISSN号：0957-4522

是否译文：否

发表时间：2017-07-01

合写作者：Wang, Song,Shao, Peipei

通讯作者：陈田