Silver/polymer nanocomposite as a high-k polymer matrix for dielectric composites with improved dielectric performance

2008 ◽  
Vol 18 (40) ◽  
pp. 4821 ◽  
Author(s):  
Jiongxin Lu ◽  
Kyoung-Sik Moon ◽  
C. P. Wong
Keyword(s):  
Polymer Matrix ◽  
Polymer Nanocomposite ◽  
High K ◽  
Dielectric Performance

scholarly journals Polymer Nanocomposite Membranes

2018 ◽  
Vol 8 (7) ◽  
pp. 1181 ◽  
Author(s):  
Svetlana Kononova ◽  
Galina Gubanova ◽  
Eleonora Korytkova ◽  
Denis Sapegin ◽  
Katerina Setnickova ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Polymer Matrix ◽  
Scientific Literature ◽  
Morphological Characteristics ◽  
Polymer Nanocomposite ◽  
Nanocomposite Materials ◽  
Sorption Mechanism ◽  
Nanocomposite Membranes ◽  
Nanocomposite Structure ◽  
Transport Channels

Based on the results of research works reflected in the scientific literature, the main examples, methods and approaches to the development of polymer inorganic nanocomposite materials for target membranes are considered. The focus is on membranes for critical technologies with improved mechanical, thermal properties that have the necessary capabilities to solve the problems of a selective pervaporation. For the purpose of directional changes in the parameters of membranes, effects on their properties of the type, amount and conditions of nanoparticle incorporation into the polymer matrix were analyzed. An influence of nanoparticles on the structural and morphological characteristics of the nanocomposite film is considered, as well as possibilities of forming transport channels for separated liquids are analyzed. Particular attention is paid to a correlation of nanocomposite structure-transport properties of membranes, whose separation characteristics are usually considered within the framework of the diffusion-sorption mechanism.

Enhanced dielectric performance and energy storage density of polymer/graphene nanocomposites prepared by dual fabrication

2018 ◽  
Vol 33 (2) ◽  
pp. 270-285 ◽  
Author(s):  
UO Uyor ◽  
API Popoola ◽  
OM Popoola ◽  
VS Aigbodion
Keyword(s):  
Energy Storage ◽  
Polymer Matrix ◽  
Vinylidene Fluoride ◽  
Energy Storage Materials ◽  
Energy Storage Density ◽  
Melt Mixing ◽  
Graphene Nanocomposites ◽  
Storage Density ◽  
Solution Blending ◽  
Dielectric Performance

Polymer/graphene nanocomposites (PGNs) have shown great potential as dielectric and energy storage materials. However, insolubility of graphene in most solvents, hydrophobic behaviour and poor dispersion in polymer matrix restrict wider fabrications and applications of PGNs. In this study, we present co-fabricated PGNs engineered by solution blending and melt compounding methods with improved dielectric performance. Further processing of PGNs by melt mixing after solution blending not only improved dispersion of graphene in the matrix but also ensured good interfacial interaction of the composites’ constituents and reduction of oxygen content in PGNs. Graphene nanoplatelets used in this study was slightly functionalized (fGNPs) to enhance dispersion in the polymer matrix. It was later characterized using Fourier transform infrared (FTIR) and Raman spectrometer. Scanning electron microscope (SEM) was used in morphological study of the fabricated composites. Dielectric properties, electrical conductivity, breakdown strength and energy storage capacity of the fabricated composites were investigated. The results obtained showed well-dispersed fGNPs in poly (vinylidene fluoride) (PVDF) matrix and improved dielectric performance. For instance, with 3.34 wt% and 6.67 wt% fGNPs co-fabricated composites, dielectric constant increased from about 9 for neat PVDF to 9930 and 38,418 at 100 Hz, respectively. While 7588 and 12,046 were respectively measured for solution blended-only composites at similar fGNPs content. These resulted to about 176.9% and 376.4% increase in energy storage density with 3.34 wt% and 6.67 wt% fGNPs co-fabricated composites when compared to their counterparts. These results were also credited to strong bonding, reduction of oxygen and recovered graphene structure by melt-mixing approach.

Recent Advances in Polymer-Based Nanocomposites: A Brief Review

2021 ◽  
Vol 13 ◽  
Author(s):  
S. K. Parida
Keyword(s):  
Electrical Properties ◽  
Polymer Nanocomposites ◽  
Polymer Matrix ◽  
Polymer Nanocomposite ◽  
Review Article ◽  
Nanosized Particles ◽  
Mechanical And Electrical Properties ◽  
Potential Applications ◽  
Manufacturing Techniques ◽  
Host Polymer

: This presented review article is constructed to be an extensive source for polymer nanocomposite researchers covering the relation of structure with property, manufacturing techniques, and potential applications when a small number of nanosized particles are added to a host polymer matrix. The exceptional structural, mechanical, and electrical properties of polymer nanocomposites after the addition of inorganic solid nanoparticles are elucidated by the large surface area of doped nanoparticles that interact with host polymer matrices. Due to the generation of ideas, the conventional methods of preparation of polymer nanocomposites are made more interesting. Hence, this brief review presents a sketch of different synthesis techniques, characterization, applications, and safety concerns for polymer nanocomposites.

Space charge regulated high-k polymer nanocomposite with a novel sandwich structure

2020 ◽  
Vol 203 ◽  
pp. 108461
Author(s):  
Jiameng Zhang ◽  
Yanan Hao ◽  
Yiwen Liu ◽  
Renyu Wang ◽  
Limin Guo ◽  
...  
Keyword(s):  
Space Charge ◽  
Sandwich Structure ◽  
Polymer Nanocomposite ◽  
High K

scholarly journals High-k Polymer Nanocomposite Materials for Technological Applications

2020 ◽  
Vol 10 (12) ◽  
pp. 4249
Author(s):  
Ganesh Shimoga ◽  
Sang-Youn Kim
Keyword(s):  
Polymer Nanocomposites ◽  
Gate Dielectrics ◽  
Field Effect Transistors ◽  
Polymer Nanocomposite ◽  
Tunable Capacitors ◽  
Contemporary World ◽  
Nanocomposite Polymer ◽  
Electro Optic ◽  
High K ◽  
High Dielectric

Understanding the properties of small molecules or monomers is decidedly important. The efforts of synthetic chemists and material engineers must be appreciated because of their knowledge of how utilize the properties of synthetic fragments in constructing long-chain macromolecules. Scientists active in this area of macromolecular science have shared their knowledge of catalysts, monomers and a variety of designed nanoparticles in synthetic techniques that create all sorts of nanocomposite polymer stuffs. Such materials are now an integral part of the contemporary world. Polymer nanocomposites with high dielectric constant (high-k) properties are widely applicable in the technological sectors including gate dielectrics, actuators, infrared detectors, tunable capacitors, electro optic devices, organic field-effect transistors (OFETs), and sensors. In this short colloquy, we provided an overview of a few remarkable high-k polymer nanocomposites of material science interest from recent decades.

Preparation and characterization of poly (amide-ester-imide)/Na+-MMT nanocomposite via ultrasonic method

2017 ◽  
Vol 37 (5) ◽  
pp. 443-448 ◽  
Author(s):  
Razieh Mirsafaei ◽  
Majid Kolahdoozan
Keyword(s):  
Electron Microscopy ◽  
Polymer Matrix ◽  
Ultrasonic Method ◽  
Polymer Nanocomposite ◽  
Interlayer Spacing ◽  
Water Soluble ◽  
Sem Images ◽  
Structure Information ◽  
Poly Ethylene ◽  
Clay Layers

Abstract The novel poly (amide-ester-imide) (PAEI)/Na+-MMT (montmorillonite) nanocomposites were synthesized by ultrasound-assisted technique successfully. PAEI/Na+-MMT nanocomposites with various content of Na+-MMT were applied to enhance the dispersion of the clay layers with polymer matrix. Water-soluble PAEI containing poly (ethylene glycol) (PEG-6000) was prepared, and nanocomposites with various content of Na+-MMT (5, 10, 15, and 20 mass %) were fabricated by ultrasonic method to produce nano-scale composites. The effects of Na+-MMT on the nanocomposites were investigated by Fourier transform infrared, X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) and for thermal properties. XRD approved the structure information of the synthesized nanomaterials, and it was shown that the interlayer spacing increased with clay loading. The magnitude of dispersion of the clay in the nanocomposite matrix was investigated by TEM and SEM images. The results indicated that the lateral dimension of Na+-MMT particles in composites was approximately 100 nm, and the nanomaterials are well dispersed in the polymer matrix to produce exfoliated structure in polymer/nanocomposite. Thermogravimetric analysis confirms that PAEI/Na+-MMT nanocomposites show superior thermal stability with respect to the pure PAEIs.

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