Effect of equal amounts of Mn and Co dopant addition on the structural, electrical and magnetic properties of PVDF films

Abdelaziz, M.; Abdelrazek, E.M.

doi:10.1016/j.physb.2004.01.154

Cited by 26 publications

(12 citation statements)

References 19 publications

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“…Besides carbon nanotubes, metal nanoparticles such as gold also have been used in EMI shielding because of their excellent conductivity resulting from their impedance match between materials and free space. , Among the various polymer matrices, poly(vinylidene fluoride) (PVDF), an excellent piezoelectric polymer, has attracted great interest among the chemists due to its good flexibility, large intrinsic polarization, dielectric properties, ferroelectric behavior, low cost, and ease of processing, and PVDF has been used in wide device fabrications such as sensors, actuators, transducers, and memory devices. − …”

Section: Introductionmentioning

confidence: 99%

Enhanced Electromagnetic Interference Shielding in a Au–MWCNT Composite Nanostructure Dispersed PVDF Thin Films

et al. 2016

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Electromagnetic interference (EMI) shielding effectiveness and conductivities in a flexible conducting polymer composite film, prepared via a simple solvent cast method, of PVDF incorporated with Au–MWCNT are studied. The scanning electron microscopic analysis showed that the Au-loaded MWCNT uniformly dispersed in PVDF. The HRTEM images show that Au nanoparticles having a particle size of 20–30 nm have been deposited on the nodes of the MWCNT. The values of dielectric constant were found to be 12.11 and 13.89 at 1 MHz upon the incorporation of 1 and 3 wt % MWCNT in PVDF. The impedance and electromagnetic interference shielding effectiveness studies reveal that the polymer nanocomposites possess enhanced conductivity of 1.12 × 10–4 S/cm at 1 MHz, minimum return loss of 4.4 dB, and effective electromagnetic shielding of 26.7 dB at 12 GHz for 3 wt % Au NPs in 3 wt % MWCNT/PVDF thin film.

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Section: Introductionmentioning

confidence: 99%

Enhanced Electromagnetic Interference Shielding in a Au–MWCNT Composite Nanostructure Dispersed PVDF Thin Films

et al. 2016

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“…[4]. Mn is considered to be a good candidate for one or two dimensional phenomena and for optical memory devices [5,6] based on the importance and relevance of the PVA/MAA:EA polymer blend as a suitable matrix for transition metal ion doping. To the best of our knowledge little systematic investigation has been carried out on metal/polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Structural, Optical and Electrical conductivity Studies of Mn2+ Ions Doped PVAMAAEA Polymer Blend Films

Ojha¹,

Siddaiah²,

Gopal³

et al. 2018

IJSRPAS

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Pure and different concentrations of Mn 2+ (1.0, 2.0, 3.0, 4.0 and 5.0 mol%) doped PVA/MAA:EA polymer blend films were prepared by solution casting method. The structural analysis of the prepared samples by X-ray Diffraction reveals broadening of diffraction peak which implies a lower degree of crystallinity with higher Mn 2+ concentration. UV-Vis spectral analysis shows a significant red shift in the optical band gap with increase in Mn 2+ concentration. FTIR spectrum exhibits bands characteristic of stretching and bending vibrations O-H, C-H, C=C and C-O groups and the changes in the FTIR spectrum with dopant concentration indicate the complexation of dopant with the polymer blend. The conductivity study shows that the doping of Mn 2+ ions into the polymer blend system enhances its ionic conductivity from 2.46 X 10 -8 Scm -1 for pure film to 1.41 X 10 -7 Scm -1 for 5 mol% of Mn 2+ ions at room temperature, which is due to the increase in mobile charge carriers and their increased mobility which is explained in terms of an increase in the amorphicity.

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“…Its fields of applicability were widely broadened during the later years due to the development of medicine. Poly (vinyl alcohols), (PVA) are widely used in polymer science fields because the advantages of PVA are water-soluble polymer, biodegradable polymer and low toxic [7][8]. The chemical modification has subsequently applied to improve the properties of macromolecules, leading to many applications of PVA, especially made in polymer hydrogel [9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Complexes of Remodulated Polyvinyl Alcohol Conjugates

2017

International Journal of Advanced Research in Chemical Science

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Effect of equal amounts of Mn and Co dopant addition on the structural, electrical and magnetic properties of PVDF films

Cited by 26 publications

References 19 publications

Enhanced Electromagnetic Interference Shielding in a Au–MWCNT Composite Nanostructure Dispersed PVDF Thin Films

Enhanced Electromagnetic Interference Shielding in a Au–MWCNT Composite Nanostructure Dispersed PVDF Thin Films

Structural, Optical and Electrical conductivity Studies of Mn2+ Ions Doped PVAMAAEA Polymer Blend Films

Synthesis and Characterization of Complexes of Remodulated Polyvinyl Alcohol Conjugates

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