Uniformly dispersed iron oxide–cellulose ferromagnetic nanocomposites were successfully obtained by ultrasonication, as a clean and energy-saving method.

This paper investigates the effects of ultrasonication on cellulose microparticles in different conditions. FTIR (Fourier transformed infrared spectrometry) and XRD (X-ray diffraction) analyses were used to compare changes microstructure caused by following various ultrasonic treatment conditions: time, amplitude generated ultrasound waves, output power converted into ultrasound, liquid medium (water isopropyl alcohol) for ultrasonication, shape vessel sonication. The cumulative results lead...

The current study aims to prepare ferromagnetic iron oxides (magnetite and/or maghemite) using the coprecipitation method of an salt in a basic environment stimulated by ultrasound, with cellulose added at start synthesis and after 15 min order perform situ partial synthesis. structures, morphology, properties composites are analyzed IR, XRD, SEM, TEM, TGA, DSC, magnetic measurements. cumulative effect ultrasonic waves is observed reduction degree crystallinity native compared (from 73.2...

Nanocellulose, including cellulose nanofibers (CNFs), nanocrystals (CNCs), and bacterial nanocellulose (BNC), represents a promising class of bio-based nanomaterials derived from natural sources. These materials, plant-based cellulose, are characterized by exceptional mechanical strength, high surface area, biodegradability, the ability to form stable nanoparticle networks, making them suitable for use in composites, biomedicine, electronics, many other fields. In this review, we present...

Hybrid siloxane materials based on a mutually reactive epoxy–amine system are organic-inorganic hybrid synthesized via the sol–gel reaction of precursors, followed by polymerization organo-functionalized oligosiloxanes. Therefore, using new as product resulting from between 1,3-bis(3-glycidoxypropyl)-l, 1,3,3-tetramethyldisiloxane—C16H34O5Si2—(gp-DS) and p-phenylenediamine—C6H4(NH2)2—(PPD), an aromatic diamine, was obtained. The chemical structure material confirmed Fourier Transform...

This work describes the investigation of polymeric membranes composed chitosan and barium titanate nanoparticles that may find suitable applications for speeding up bone regeneration process.

The present research reports the ultrasonic assisted synthesis of ferroelectric cellulose-barium titanate composites (C/BT). As proved by wide angle X-ray diffraction (WAXD) and scanning electronic microscopy (SEM), consist perovskite-type barium particles (BT) 400- 600 nm, disposed around cellulose microfibers. Fourier transform infrared spectroscopy (FTIR), electron (SEM) revealed modifications structure/morphologies prepared sample as compared to pristine cellulose, with direct...

Given the predominantly negative impact of heavy metals on living organisms, present study proposed to evaluate adsorption performances under static conditions Cd (II) from aqueous solutions unmodified Sarkanda grass lignin compared polysaccharide polymers chemically functionalized, obtained by synthesis and in their native state, but which, although effective, have a cost price that does not allow for large-scale expansion. To improve retention this aromatic component biomass resulting...

In this paper, the synthesis and characterization of two polycaprolactone-polydimethylsiloxane (PDMS-CL) copolymers with biodegradable properties are reported. A comparative study was carried out using an aminopropyl-terminated polydimethylsiloxane macro-initiator (APDMS) different molecular weights. The (PDMS-CL-1 PDMS-CL-2) were obtained by ring-opening polymerization ɛ-caprolactone APDMS as initiators stannous 2-ethylhexanoate a catalyst. copolymer's structures confirmed Fourier transform...

Abstract Barium titanate submicronic particles were prepared, for the first time, by a solid‐state reaction route, where classical ball grinding/mixing and drying steps replaced ultrasonication microwave assisted processes, respectively, resulting in significant reduction both duration temperature of thermal treatment. The structure prepared samples was analyzed Fourier transform infrared spectroscopy X‐ray powder diffraction, while morphology particle size followed means scanning electron...

A convenient approach for the preparation of cellulose ‐ carbon nanotubes (CNT) hybrid materials owning electromagnetic shielding properties, based on viscose (V) and TEMPO‐oxidized fibers (VO) is proposed. Viscose (V‐CNT) (VO‐CNT) composites were prepared by embedding surface two types fibers, that is, its C 6 ‐oxidized derivative. The chemical composition, morphology, thermal stability thoroughly investigated Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy...

Polymer films with high refractive index are suitable for a wide range of applications, such as optical fibers, lens and other components optoelectronic devices. In this work, polyvinyl alcohol were prepared from aqueous solutions, which homogenized by ultrasonication. order to increase the index, polymer was reinforced barium titanate nanoparticles, previously ultrasonicated an adequate dispersion inside host polymer. The in visible domain analyzed function filler percent introduced...

This work describes the synthesis of a polysilane (PSH)–barium titanate (BT) ferroelectric polymer composite that keeps stable in presence ultraviolet light (UV). To evaluate stability UV radiation and mechanism interaction between PSH matrix BT, FTIR measurements were carried out. The UV/VIS absorption measurement reveals absorbs strongly range, while behaves similarly to BT. Although is semiconductor, dielectric spectrometry analysis determined BT material due its high constant low losses....

The current study examines the adsorptive potential of a biomaterial resulting from extraction cellulose, Sarkanda grass lignin, for retention Co(II) aqueous medium under static conditions. initial solution pH, concentration Co(II), adsorbent dose and contact time between adsorbate were main parameters preliminarily tested in order to accurately establish optimal experimental adsorption capacity lignin was evaluated through surface analyses, application Freundlich Langmuir models chemical...

The paper reports on the preparation of polysiloxane hydrophobized viscose-maghemite/goethite magnetic composite with properties appropriate for uses in oil spill sorption from polluted aqueous media.A multi-step procedure was employed to obtain polymeric composite.The structures prepared samples and precursors were analyzed by Fourier transform infrared spectroscopy (FTIR), whereas their morphology investigated means scanning electron microscopy (SEM).The hydrophobicity confirmed...

Abstract High refractive index and transparent materials are useful in various technical domains, ranging from energy sector to microelectronics. This work deals with polymer composites prepared by embedding small amounts of barium titanate hydroxypropyl cellulose matrix. Optical transparency the composite films varies agreement doping level. Light dispersion allowed evaluation specific parameters, which related sample structural order possible optical transitions. Conductivity is increased...

Some p-type and n-type ZITO transparent conductive films of 300 nm thickness, have been deposited by vacuum thermal evaporation oxidation in air on different substrates. The electrical optical properties the thin studied as a function chemical composition, substrate nature annealing conditions. X-ray diffraction scanning electron microscopy were used order to investigate film structures. conductivity transmittance are higher than films.