Enhancement the electrical conductivity of the synthesized polyvinylidene fluoride/polyvinyl chloride composite doped with palladium nanoparticles via laser ablation

Ismail, Amani; El‐Newehy, Mohamed H.; El‐Naggar, Mehrez E.; Moydeen, A. Meera; Menazea, A.A.

doi:10.1016/j.jmrt.2020.08.013

Cited by 69 publications

(18 citation statements)

References 84 publications

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Section: Ac Electrical Conductivitysupporting

confidence: 92%

“…This result can be explained due to the increase in charge carriers, since the loading of metal ions leads to an increase of free charge carriers, which, accordingly, leads to an increase of electrical conductivity. This result is in good agreement with the results of other polymers doped with different metal ions [18,19,24,33,38,39]. Figure 5 illustrates the effect of loading poly(EDMA) and poly(EDMA-co-MMA) with Pd(OAc) 2 on the electrical conductivities across the entire test frequency range at room temperature (Figure 5A,C) and at 340 K (Figure 5B,D).…”

Section: Ac Electrical Conductivitysupporting

confidence: 87%

“…Silver was introduced into chitosan/dimethyl amino ethyl methacrylate (chitosan-g-PDMAEMA) with different concentrations, and the results exhibited that the electrical conductivity of the chitosan-g-PDMAEMA/Ag + (2%) composite was better than the original chitosan-g-PDMAEMA [17]. A semiconductor polymer nanocomposite film was based on the doping Poly(vinylidene fluoride) (PVDF) and Poly(vinyl Chloride) (PVC) with different concentrations of palladium nanoparticles (PdNPs) using laser ablation technique, and the results showed that the presence of PdNPs improved the electrical conductivity of PVDF/PVC [18]. PdNPs were used as a filler for few-walled carbon nanotubes (FWCNTs) to produce a transparent and highly electrically conductive film which was applied for the reduction reaction of H 2 .…”

Section: Introductionmentioning

confidence: 99%

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Dielectric Permittivity, AC Electrical Conductivity and Conduction Mechanism of High Crosslinked-Vinyl Polymers and Their Pd(OAc)2 Composites

et al. 2021

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Semiconductor materials based on metal high crosslinked-vinyl polymer composites were prepared through loading of Pd(OAc)2 on both Poly(ethylene-1,2-diyl dimethacrylate) (poly(EDMA)) and poly(ethylene-1,2-diyl dimethacrylate-co-methyl methacrylate) (Poly(EDMA-co-MMA)). The thermochemical properties for both poly(EDMA) and poly(EDMA-co-MMA) were investigated by thermal gravimetric analysis TGA technique. The dielectric permittivity, AC electrical conductivity and conduction mechanism for all the prepared polymers and their Pd(OAc)2 composites were studied. The results showed that the loading of polymers with Pd(OAc)2 led to an increase in the magnitudes of both the dielectric permittivity and AC electrical conductivity (σac). The value of σac increased from 1.38 × 10−5 to 5.84 × 10−5 S m−1 and from 6.40 × 10−6 to 2.48 × 10−5 S m−1 for poly(EDMA) and poly(EDMA-co-MMA), respectively, at 1 MHz and 340 K after loading with Pd(OAc)2. Additionally, all the prepared polymers and composites were considered as semiconductors at all the test frequencies and in the temperature range of 300–340 K. Furthermore, it seems that a conduction mechanism for all the samples could be Quantum Mechanical Tunneling (QMT).

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Section: Ac Electrical Conductivitysupporting

confidence: 92%

Section: Ac Electrical Conductivitysupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Dielectric Permittivity, AC Electrical Conductivity and Conduction Mechanism of High Crosslinked-Vinyl Polymers and Their Pd(OAc)2 Composites

et al. 2021

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“…Laser ablation incorporates the use of a focused optical light beam in eliminating material from a substrate to create MN arrays. Lasers have been used to process different materials ranging from micro- and nano-scale for several applications [ 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 123 ]. Various laser types have been studied for the manufacture of MN arrays.…”

Section: Mn Manufacturing Methodsmentioning

confidence: 99%

A Comprehensive Review of Microneedles: Types, Materials, Processes, Characterizations and Applications

2021

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Drug delivery through the skin offers many advantages such as avoidance of hepatic first-pass metabolism, maintenance of steady plasma concentration, safety, and compliance over oral or parenteral pathways. However, the biggest challenge for transdermal delivery is that only a limited number of potent drugs with ideal physicochemical properties can passively diffuse and intercellularly permeate through skin barriers and achieve therapeutic concentration by this route. Significant efforts have been made toward the development of approaches to enhance transdermal permeation of the drugs. Among them, microneedles represent one of the microscale physical enhancement methods that greatly expand the spectrum of drugs for transdermal and intradermal delivery. Microneedles typically measure 0.1–1 mm in length. In this review, microneedle materials, fabrication routes, characterization techniques, and applications for transdermal delivery are discussed. A variety of materials such as silicon, stainless steel, and polymers have been used to fabricate solid, coated, hollow, or dissolvable microneedles. Their implications for transdermal drug delivery have been discussed extensively. However, there remain challenges with sustained delivery, efficacy, cost-effective fabrication, and large-scale manufacturing. This review discusses different modes of characterization and the gaps in manufacturing technologies associated with microneedles. This review also discusses their potential impact on drug delivery, vaccine delivery, disease diagnostic, and cosmetics applications.

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“…The absorption edge defines the excitation of an electron by an incident photon from a lower energy to a higher energy state, which may be calculated by extrapolating the linear part of the absorption coefficient () with photon energy (h). The absorption coefficient is calculated using the following equation, where A and d are the absorbance and thickness of the prepared sample [34].…”

Section: Optical Propertiesmentioning

confidence: 99%

Tunning the Physical Properties of PVDF/PVC/Zinc Ferrite Nanocomposites Films for More Efficient Adsorption of Cd (II)

Ramadan

Ismail

2022

J Inorg Organomet Polym

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This work studies the enhancement of the physical properties PVDF/PVC blend by adding ZnFe2O4 with different weight percent (from 0% up to 10%) as a nanofiller. The effect of ZnFe2O4 on behavior of PVDF/PVC was studied through XRD, FTIR, FESEM and UV-Visible spectroscopy. The PVDF/PVC/ 10% ZnFe2O4 nanocomposite film was represented the optimum sample. As it shows maximum crystallinity, roughness average (414 nm) and root mean square roughness (113nm) on another hand this sample has also the lowest value of energy band gap for direct and indirect transition. The removal efficiency of Cd(II) by using PVDF/PVC/ 10% ZnFe2O4 reached to about 50 % at pH 6 after 60min. the absorption mechanism as well as kinetics isotherm have been studied.

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Enhancement the electrical conductivity of the synthesized polyvinylidene fluoride/polyvinyl chloride composite doped with palladium nanoparticles via laser ablation

Cited by 69 publications

References 84 publications

Dielectric Permittivity, AC Electrical Conductivity and Conduction Mechanism of High Crosslinked-Vinyl Polymers and Their Pd(OAc)2 Composites

Dielectric Permittivity, AC Electrical Conductivity and Conduction Mechanism of High Crosslinked-Vinyl Polymers and Their Pd(OAc)2 Composites

A Comprehensive Review of Microneedles: Types, Materials, Processes, Characterizations and Applications

Tunning the Physical Properties of PVDF/PVC/Zinc Ferrite Nanocomposites Films for More Efficient Adsorption of Cd (II)

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