Investigations on the magnetization behavior of magnetic composite particles

Eichholz, Christian; Knoll, Johannes; Lerche, D.; Nirschl, Hermann

doi:10.1016/j.jmmm.2014.05.001

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…The magnetic behavior of these particles is very complex. Their susceptibility (responsiveness) and magnetization has to be analyzed during particle design, optimization of application and quality control of the production process (Wilhelm et al, 2002), (Mykhaylyk et al, 2008), (Eichholz et al, 2014).…”

Section: Characterization Of Magnetic Particlesmentioning

confidence: 99%

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Comprehensive Characterization of Nano- and Microparticles by In-Situ Visualization of Particle Movement Using Advanced Sedimentation Techniques

Lerche¹

2019

KONA

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The state of a suspension is crucial with regard to processing pathways, functionality and performance of the end product. In the past decade, substantial progress has been made in designing highly specialized and functionalized particles. In current particle technology, besides classic particle properties such as particle size distribution, shape and density, surface properties play an essential role for processing, product specification and use. For example, in medical therapy, analytical diagnostic applications, as well as in separation processing and harvesting of high-valued materials, magnetic micro-and nanoparticles play an increasing role. In addition to traditional parameters such as size, the particle magnetization has to be quantified here. Sedimentation techniques have been used for hundreds of years to determine the geometrical characteristics of dispersed particles. Numerous national and international standards regarding these techniques have been published. Mainly due to the fast growing market share of laser scattering techniques over the past two decades, most customers these days are not aware of some advantageous features of particle characterization via a firstprinciple fractionating approach such as sedimentation. This is unfortunate as sedimentation techniques have made huge technological leaps forward regarding electronics, sensors and computing abilities. This paper aims to give a short review about different cumulative and incremental sedimentation approaches to measure the particle size distribution. It focuses mainly on the in-situ visualization (STEP-Technology ® ) of particle migration in gravitational and centrifugal fields. It describes the basics of the new multi-sample measuring approaches to quantify the separation kinetics by spatial and time-resolved particle concentration over the entire sample height. Based on these data, the sedimentation velocity and particle size distribution are elucidated and estimates of accuracy, precision and experimental uncertainties are discussed. Multi-wavelength approaches, correction of higher concentration, and the influence of rheological behavior of continuous phase will also be discussed. Applications beyond the traditional scope of sedimentation analysis are presented. This concerns the in-situ determination of hydrodynamic particle density and of magnetophoretic velocity distributions for magnetic particulate objects.

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Section: Characterization Of Magnetic Particlesmentioning

confidence: 99%

“…If the "bridge" is exposed to an increasing centrifugal force, it slides down and starts to deform under the applied load like a two-end fixed rubber strap. Finally, at a critical centrifugal force, the magnetic interaction forces between particles are overcome and the "bridge" breaks , (Eichholz et al, 2014).…”

Section: Characterization Of Magnetic Particlesmentioning

confidence: 99%

Comprehensive Characterization of Nano- and Microparticles by In-Situ Visualization of Particle Movement Using Advanced Sedimentation Techniques

Lerche¹

2019

KONA

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“…In such separation processes, the interaction of magnetic forces and other forces is important to control and direct the particle movement. Depending on the magnitude of the acting magnetic force, the whole separation process can be influenced by specific movements or magnetically induced agglomeration of the magnetic particles [44].…”

Section: Fe 3 O 4 @C Core-shell Nanoparticles Characteristicsmentioning

confidence: 99%

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

Mm¹,

Macuvele²,

Müller³

et al. 2017

J Adv Chem Eng

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Journal of Advanced Chemical EngineeringLima et al., J Adv Chem Eng 2017, 7:1 DOI: 10.4172/2090 Volume AbstractCore-shell Fe 3 O 4 @C nanoparticles consist of a magnetic core and carbon coating, and exhibit high adsorptive capacity, easy magnetic separation and reusability. Due to these properties, core-shell Fe 3 O 4 @C nanoparticles have great potential application in adsorption, separation and wastewater treatment. Magnetic separation based on the super paramagnetic Fe 3 O 4 has received considerable attention and is widely used for the removal of dye, oil pharmaceuticals and metals from water due to its high efficiency and economic viability. Therefore, the main characteristics of the core-shell Fe 3 O 4 @C nanoparticles, the different types of synthesis, as well as the main applications for the removal of water pollutants were reviewed. In this brief review, an overview of the basic properties of the Fe 3 O 4 @C core-shell nanoparticles are given, and the most important and more frequently used methods for the synthesis of Fe 3 O 4 @C core-shell nanoparticles have been summarized along with the description of its adsorbent application potential.

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Optimization of Magnetic and Electrical Properties of New Aluminium Matrix Composite Reinforced with Magnetic Nano Iron Oxide (Fe3O4)

Ferreira

Bayraktar

Robert

et al. 2016

Conference Proceedings of the Society for Experimental Mechanics Series

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Investigations on the magnetization behavior of magnetic composite particles

Cited by 6 publications

References 20 publications

Comprehensive Characterization of Nano- and Microparticles by In-Situ Visualization of Particle Movement Using Advanced Sedimentation Techniques

Comprehensive Characterization of Nano- and Microparticles by In-Situ Visualization of Particle Movement Using Advanced Sedimentation Techniques

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

Optimization of Magnetic and Electrical Properties of New Aluminium Matrix Composite Reinforced with Magnetic Nano Iron Oxide (Fe3O4)

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