Fabrication and characterization of magnetic cotton yarns for textile applications

Grosu, Marian C.; Lupu, I.; Cramariuc, Oana; Hogas, Horatiu I.

doi:10.1080/00405000.2018.1423935

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…Good magnetic properties have been shown for staple yarns coated with barium ferrite, where the magnetizable phase leads to an increase in the saturation and residual induction [ 29 ]. When using cotton yarns that are covered with hard (barium hexaferrite), and soft (Black Toner 6745 CP-313) magnetic particles, it is shown that residual magnetism and coercive field intensity of the yarns are increasing with the magnetic powder content in the coating solution [ 30 ]. Smart textile fabrics obtained by using a coating method with NdFeB flake-like microparticles exhibit high magnetization required under special conditions [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Magnetorheological Composites for Electric and Magnetic Field Sensors and Transducers

2020

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We present a simple, low-cost, and environmental-friendly method for the fabrication of hybrid magnetorheological composites (hMCs) based on cotton fibers soaked with a mixture of silicone oil (SO), carbonyl iron (CI) microparticles, and iron oxide microfibers (μF). The obtained hMCs, with various ratios (Φ) of SO and μF, are used as dielectric materials for manufacturing electrical devices. The equivalent electrical capacitance and resistance are investigated in the presence of an external magnetic field, with flux density B. Based on the recorded data, we obtain the variation of the relative dielectric constant (ϵr′), and electrical conductivity (σ), with Φ, and B. We show that, by increasing Φ, the distance between CI magnetic dipoles increases, and this leads to significant changes in the behaviour of ϵr′ and σ in a magnetic field. The results are explained by developing a theoretical model that is based on the dipolar approximation. They indicate that the obtained hMCs can be used in the fabrication of magneto-active fibers for fabrication of electric/magnetic field sensors and transducers.

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Section: Introductionmentioning

confidence: 99%

Hybrid Magnetorheological Composites for Electric and Magnetic Field Sensors and Transducers

2020

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“…Research on similar topics was reported in [ 16 ], where cotton fabrics were coated with αFe 2 O 3 nanoparticles, graphene nanoparticles, and iron nanoparticles. In [ 17 , 18 ], polymer fibers were treated with BaFe nanoparticles and toner type 6754CP-313, and in [ 19 ], with liquid solutions of polyurethane polyole and microparticles of the NdFeB type. Therefore, composites made in [ 13 , 14 , 15 , 16 , 17 , 18 , 19 ] have physical properties that make them useful in electromagnetic smog protection.…”

Section: Introductionmentioning

confidence: 99%

“…In [17,18], polymer fibers were treated with BaFe nanoparticles and toner type 6754CP-313, and in [19], with liquid solutions of polyurethane polyole and microparticles of the NdFeB type. Therefore, composites made in [13][14][15][16][17][18][19] have physical properties that make them useful in electromagnetic smog protection.…”

Section: Introductionmentioning

confidence: 99%

A Cotton Fabric Composite with Light Mineral Oil and Magnetite Nanoparticles: Effects of a Magnetic Field and Uniform Compressions on Electrical Conductivity

et al. 2023

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Over the past few decades, tactile sensors have become an emerging field of research with direct applications in the area of biomedical engineering. New types of tactile sensors, called magneto-tactile sensors, have recently been developed. The aim of our work was to create a low-cost composite whose electrical conductivity depends on mechanical compressions that can be finely tuned using a magnetic field for magneto-tactile sensor fabrication. For this purpose, 100% cotton fabric was impregnated with a magnetic liquid (EFH-1 type) based on light mineral oil and magnetite particles. The new composite was used to manufacture an electrical device. With the experimental installation described in this study, we measured the electrical resistance of an electrical device placed in a magnetic field in the absence or presence of uniform compressions. The effect of uniform compressions and the magnetic field was the induction of mechanical–magneto–elastic deformations and, as a result, variations in electrical conductivity. In a magnetic field with a flux density of 390 mT, in the absence of mechanical compression forces, a magnetic pressure of 5.36 kPa was generated, and the electrical conductivity increased by 400% compared to that of the composite in the absence of a magnetic field. Upon increasing the compression force to 9 N, in the absence of a magnetic field, the electrical conductivity increased by about 300% compared to that of the device in the absence of compression forces and a magnetic field. In the presence of a magnetic flux density of 390 mT, and when the compression force increased from 3 N to 9 N, the electrical conductivity increased by 2800%. These results suggest the new composite is a promising material for magneto-tactile sensors.

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“…In the same work it has been shown that the presence of nano carbon black and carbonyl iron powder on the polyethylene terephthalate fabric sputter coated with aluminum exhibited higher microwave absorbing properties particularly in the primary range of 8.2–12.4 GHz, as compared with the blank polyethylene terephthalate fabric without Al sputter coating. When using cotton yarns covered with hard (barium hexaferrite) and soft (Black Toner 6745 CP-313) magnetic particles, the magnetic properties (residual magnetism and coercive field intensity) of the yarns increase with the magnetic powder content in the coating solution [ 24 ]. However, these improvements are achieved at the expense of some yarn properties, e.g.…”

Section: Introductionmentioning

confidence: 99%

Electrical and Magnetodielectric Properties of Magneto-Active Fabrics for Electromagnetic Shielding and Health Monitoring

Bunoiu

Anitas

Pascu

et al. 2020

IJMS

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An efficient, low-cost and environmental-friendly method to fabricate magneto-active fabrics (MAFs) based on cotton fibers soaked with silicone oil and iron oxide microfibers (mFe) at mass fractions 2 wt.%, 4 wt.% and 8 wt.% is presented. It is shown that mFe induce good magnetic properties in MAFs, which are subsequently used as dielectric materials for capacitor fabrication. The electrical properties of MAFs are investigated in a static magnetic field with intensities of 0 kA/m, 160 kA/m and 320 kA/m, superimposed on a medium-frequency electric field. The influence of mFe on the electrical capacitance and dielectric loss tangent is determined, and it can be observed that the electrical conductivity, dielectric relaxation times and magnetodielectric effects are sensibly influenced by the applied magnetic and electric fields. The results indicate that the MAFs have electrical properties which could be useful for protection against electromagnetic pollution or for health monitoring.

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Fabrication and characterization of magnetic cotton yarns for textile applications

Cited by 6 publications

References 16 publications

Hybrid Magnetorheological Composites for Electric and Magnetic Field Sensors and Transducers

Hybrid Magnetorheological Composites for Electric and Magnetic Field Sensors and Transducers

A Cotton Fabric Composite with Light Mineral Oil and Magnetite Nanoparticles: Effects of a Magnetic Field and Uniform Compressions on Electrical Conductivity

Electrical and Magnetodielectric Properties of Magneto-Active Fabrics for Electromagnetic Shielding and Health Monitoring

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