Impact of the Nanocarbon on Magnetic and Electrodynamic Properties of the Ferrite/Polymer Composites

Abstract

Binary and ternary composites (CM) based on M-type hexaferrite (HF), polymer matrix (PVDF) and carbon nanomaterials (quasi-one-dimensional carbon nanotubes—CNT and quasi-two-dimensional carbon nanoflakes—CNF) were prepared and investigated for establishing the impact of the different nanosized carbon on magnetic and electrodynamic properties. The ratio between HF and PVDF in HF + PVDF composite was fixed (85 wt% HF and 15 wt% PVDF). The concentration of CNT and CNF in CM was fixed (5 wt% from total HF + PVDF weight). The phase composition and microstructural features were investigated using XRD and SEM, respectively. It was observed that CM contains single-phase HF, γ- and β-PVDF and carbon nanomaterials. Thus, we produced composites that consist of mixed different phases (organic insulator matrix—PDVF; functional magnetic fillers—HF and highly electroconductive additives—CNT/CNF) in the required ratio. VSM data demonstrate that the main contribution in main magnetic characteristics belongs to magnetic fillers (HF). The principal difference in magnetic and electrodynamic properties was shown for CNT- and CNF-based composites. That confirms that the shape of nanosized carbon nanomaterials impact on physical properties of the ternary composited-based magnetic fillers in polymer dielectric matrix.

Nano-Silica-Modified Concrete: A Bibliographic Analysis and Comprehensive Review of Material Properties

“…Researchers have achieved new heights in the realm of nanotechnology with the discovery of nano-particles (NP) finer than 100 nm in size [28][29][30]. NP may be used to improve the mechanical characteristics of various materials, such as polymers [31][32][33] and cementitious materials [34][35][36][37], and are also useful in the medical, engineering, and food domains [38][39][40][41]. This prompted researchers to perform more research on the impact of nano-silica (NS) on concrete [42].…”

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

“…Polymers, due to their many properties, have a wide variety of uses, in addition to the invention of new applications [15][16][17][18]. One of these polymers is polyvinyl alcohol (PVA), which can be used as a matrix for many materials due to its good properties, and characteristics such as chemical resistance, mechanical and dielectric strength, solubility in many solvents and water, low cost, environmentally friendly nature, thermal-stability, non-toxicity, and capability for film formation via solution casting [19][20][21][22][23][24][25][26][27][28][29].…”

Three-Dimensional Printed Filters Based on Poly(ethylene glycol) Diacrylate Hydrogels Doped with Silver Nanoparticles for Removing Hg(II) Ions from Water

“…However, adsorption also has a disadvantage related to poor selectivity and disposal issues [ 40 ]. Nanomaterials, which have interesting features, such as optical [ 46 , 47 , 48 ], mechanical [ 49 , 50 , 51 ], electrical [ 52 , 53 , 54 , 55 ], or magnetic properties [ 56 , 57 , 58 ], differ considerably when compared with their macroscopic counterparts, but the most useful property is the high surface area, which makes the nanomaterials suitable as adsorbent species. Indeed, a greater surface area guarantees greater interaction with the surrounding environment.…”