The preparation of metal-polymer composite materials using ultrasound radiation

Abstract

Ultrasound radiation is used to prepare a composite material made of polymethylacrylate and amorphous iron nanoparticles. Two preparation methods are described, in which the monomer, methylacrylate, is the starting material. The magnetic properties of the composite material are measured and reveal a superparamagnetic behavior.

The preparation of a polystyrene-iron composite by using ultrasound radiation

“…This is deduced from the electron diffraction, XRD spectrum and TEM images. 9 The state of agglomeration of the iron particles is also unchanged during sonication with styrene. The small size of the iron particles also in¯uences the hysteresis loop measurements (Fig 2), which depicted a curve which did not saturate at 15 kGauss, and did not show an hysteresis.…”

“…The process by which the iron is separated from the polymer is described elsewhere. 9 Transmission Electron Micrographs (TEM) were obtained with a JEOL-JEM100SX electron microscope.…”

“…8 This study has demonstrated that the addition of a hydrocarbon liquid increases the initiation rate and suppresses the formation of coloured compounds. We have recently demonstrated 9 that these two ideas can be combined for the fabrication of transition metal±polymer composites.…”

Preparation, structure, and magnetic properties of polystyrene coated by Fe3O4 nanoparticles

“…Ferromagnetic particles dispersed in a matrix of nonmagnetic material may show great magnetoresistance and therefore, which can be applied in magnetic recording heads. Margel and co-workers prepared the iron/polymer composite used as ultrasound radiation material [13,14]. Recently, Allen et al have used the ferritin-like protein cage to synthesize homogeneous magnetic nanoparticles [15].…”

Ultrasound-Assisted Synthesis of Hybrid Phosphomolybdate–Polybenzidine Containing Silver Nanoparticles for Electrocatalytic Detection of Chlorate, Bromate and Iodate Ions in Aqueous Solutions

“…The rapid motion can result in the breaking of polymer chains over a certain molecular weight in the vicinity of cavitation bubbles [31]. Ultrasound has also been widely applied as a tool for synthesizing redox active hybrid materials to develop molecular architectures with special properties when compared to product obtained though conventional methods [31][32][33]. Hence, ultrasound has been used in this investigation for synthesizing silver nanoparticle-embedded POM-benzidine polymer hybrid material in order to fabricate a hybrid electrochemical interface for electrocatalytic reduction of chlorate, bromate and iodate ions in aqueous solutions.…”