Electrical conduction and dielectric relaxation process in Ce0.8Y0.2O1.9 electrolyte system

Padmasree, K.P.; Montalvo-Lozano, R.A.; Montemayor, Sagrario M.; Fuentes, Antonio F.

doi:10.1016/j.jallcom.2011.06.036

Cited by 44 publications

(22 citation statements)

References 28 publications

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“…The bigels showed a single relaxation peak. This may be due to the ionic transport process in the bulk [53] . The relaxation time (Table 4) was calculated from the impedance loss spectra.…”

Section: Thermal and Electrical Propertiesmentioning

confidence: 99%

Sunflower Oil and Protein-based Novel Bigels as Matrices for Drug Delivery Applications—Characterization andin vitroAntimicrobial Efficiency

Behera

Sagiri

Pal

et al. 2015

Polymer-Plastics Technology and Engineering

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GRAPHICAL ABSTRACTThe current study deals with the characterization of sunflower oil-and protein-based bigels for drug delivery applications. Span-40 was used as an organogelator for the preparation of bigels. The bigels were characterized by microscopy, XRD, thermal, texture studies and impedance spectroscopy. The microscopic studies revealed that the droplets were apolar in nature (organogels), while the continuum phase was polar in nature (protein hydrogel matrix). Incorporation of the proteins improved the stability of the bigels. The release of the drugs followed diffusion kinetics. The bigels showed good antimicrobial efficiency against E.coli and were cytocompatible in presence of L929 cells.

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“…The bigels showed a single relaxation peak. This may be due to the ionic transport process in the bulk [53] . The relaxation time (Table 4) was calculated from the impedance loss spectra.…”

Section: Thermal and Electrical Propertiesmentioning

confidence: 99%

Sunflower Oil and Protein-based Novel Bigels as Matrices for Drug Delivery Applications—Characterization andin vitroAntimicrobial Efficiency

Behera

Sagiri

Pal

et al. 2015

Polymer-Plastics Technology and Engineering

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“…This diffraction peaks exactly matches with the reported XRD pattern of cubic fluorite CeO 2 (PDF-ICDD 34-0394), shown at the bottom of Figure 1. The number and intensity of the characteristic reflection remains the same with no additional peaks, when we extended the milling time [5]. After 1h milling, there is a decrease in intensity and broadening of the characteristic diffraction peak is observed as a result of the decrease in crystallite size and an increase in lattice strain taken place during milling.…”

Section: Structural Characterizationmentioning

confidence: 75%

Electrical Properties of (CeO₂)_0.9(MO)_0.1 (M=Ca or Mg) Solid Electrolyte System

et al. 2013

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Electrical conductivity studies of alkaline earth oxides doped ceria Ce 0.9 M 0.1 O 2-δ , (where M=Ca and Mg) is reported in this work. The samples were prepared at room temperature by mechanical milling. X-ray diffraction patterns confirm the cubic fluorite structure. Scanning electron micrographs of MgO doped sample shows the presence of the segregation of Mg 2+ which results a negative effect on the electric properties of the MgO doped sample. Frequency dependence of ac conductivity (σ ac ) of these oxide ion conductors showed a remarkably different behavior from that of the cation ones. As temperature increases above 350°C, ac conductivity σ ac in the low frequency range was strongly influenced by space charge polarization at grain boundary and the high frequency plateau agreed with the bulk conductivity of the system. Bulk and grain boundary conductivity studies show that CaO doped ceria exhibit better electrical properties compared to MgO doped sample.

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“…The tan δ plot of the organogels has shown a single relaxation peak. This may be due to the ionic transport process in the bulk phase . The impedance profile showed F2 had highest impedance followed by F1 and F3.…”

Section: Resultsmentioning

confidence: 99%

Thermal, electrical, and mechanical properties of tween 80/span 80–based organogels and its application in iontophoretic drug delivery

Sagiri

Kumar

Champaty

et al. 2014

J of Applied Polymer Sci

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The present study describes the preparation and characterization of the Tween 80/Span 80 and sunflower oil-based organogels. Organogels were characterized using microscopy, X-ray diffraction, thermal, mechanical, and electrical techniques. The properties were found to be dependent on the proportion of the water : surfactant mixture. The in vitro drug release studies were performed under electrical potential. The drug release in the presence of electrical current was compared with the passive drug release. The drug release from the organogels followed the zero-order kinetics suggesting diffusion mediated release. The preliminary results suggested that the organogels may be used as drug carriers in iontophoretic drug delivery.

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Electrical conduction and dielectric relaxation process in Ce0.8Y0.2O1.9 electrolyte system

Cited by 44 publications

References 28 publications

Sunflower Oil and Protein-based Novel Bigels as Matrices for Drug Delivery Applications—Characterization andin vitroAntimicrobial Efficiency

Sunflower Oil and Protein-based Novel Bigels as Matrices for Drug Delivery Applications—Characterization andin vitroAntimicrobial Efficiency

Electrical Properties of (CeO₂)_0.9(MO)_0.1 (M=Ca or Mg) Solid Electrolyte System

Thermal, electrical, and mechanical properties of tween 80/span 80–based organogels and its application in iontophoretic drug delivery

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Electrical conduction and dielectric relaxation process in Ce0.8Y0.2O1.9 electrolyte system

Cited by 44 publications

References 28 publications

Sunflower Oil and Protein-based Novel Bigels as Matrices for Drug Delivery Applications—Characterization andin vitroAntimicrobial Efficiency

Sunflower Oil and Protein-based Novel Bigels as Matrices for Drug Delivery Applications—Characterization andin vitroAntimicrobial Efficiency

Electrical Properties of (CeO2)0.9(MO)0.1 (M=Ca or Mg) Solid Electrolyte System

Thermal, electrical, and mechanical properties of tween 80/span 80–based organogels and its application in iontophoretic drug delivery

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Electrical Properties of (CeO₂)_0.9(MO)_0.1 (M=Ca or Mg) Solid Electrolyte System