Effect of Thermal Treatment of Sol-Gel Titania Reservoirs on Release Kinetics of Phenytoin

2012 ◽  
Vol 95 (6) ◽  
pp. 2022-2027
Author(s):  
Anna Kozina ◽  
Karla A. Espinoza ◽  
Emma Ortiz-Islas ◽  
Ignacio A. Rivero
Keyword(s):  
Thermal Treatment ◽  
Release Kinetics ◽  
Sol Gel ◽  
Kinetics Of

scholarly journals Antibacterial Activity and Iron Release of Organic-Inorganic Hybrid Biomaterials Synthesized via the Sol-Gel Route

2021 ◽  
Vol 11 (19) ◽  
pp. 9311
Author(s):  
Michelina Catauro ◽  
Ylenia D’Errico ◽  
Antonio D’Angelo ◽  
Ronald J. Clarke ◽  
Ignazio Blanco
Keyword(s):  
Hybrid Materials ◽  
Release Kinetics ◽  
Sol Gel ◽  
Antibacterial Properties ◽  
Iron Release ◽  
Biological Characterization ◽  
Visible Spectroscopy ◽  
E Coli ◽  
Hybrid Biomaterials ◽  
Kinetics Of

The aim of this work was the synthesis of hybrid materials of iron (II)-based therapeutic systems via the sol-gel method. Increasing amounts of polyethylene glycol (PEG 6, 12, 24, 50 wt%) were added to SiO2/Fe20 wt% to modulate the release kinetics of the drug from the systems. Fourier-transform infrared (FTIR) spectroscopy was used to study the interactions between different components in the hybrid materials. The release kinetics in a simulated body fluid (SBF) were investigated, and the amount of Fe2+ released was detected via ultraviolet-visible spectroscopy (UV-Vis) after reaction with ortho-phenanthroline. Furthermore, biological characterization was carried out. The bioactivity of the synthesized hybrid materials was evaluated via the formation of a layer of hydroxyapatite on the surface of samples soaked in SBF using spectroscopy. Finally, the potential antibacterial properties of seven different materials against two different bacteria—E. coli and S. aureus—were investigated.

Characterization, bioactivity and ampicillin release kinetics of TiO2 and TiO24SiO2 synthesized by sol-gel processing

2006 ◽  
Vol 17 (5) ◽  
pp. 413-420 ◽  
Author(s):  
M. Catauro ◽  
M. G. Raucci ◽  
C. Convertito ◽  
D. Melisi ◽  
M. G. Rimoli
Keyword(s):  
Release Kinetics ◽  
Sol Gel ◽  
Gel Processing ◽  
Kinetics Of

Analysis of K+ release kinetics of biomass ash with different pH

2014 ◽  
Vol 22 (2) ◽  
pp. 171-176
Author(s):  
Kan WANG ◽  
Zifang WANG ◽  
Ming GAO ◽  
Yaohua HUANG ◽  
Xiaofei HAN ◽  
...  
Keyword(s):  
Release Kinetics ◽  
Biomass Ash ◽  
Kinetics Of ◽  
K Release

scholarly journals Design and release kinetics of liposomes containing abiraterone acetate for treatment of prostate cancer

2021 ◽  
Vol 2 ◽  
pp. 100077
Author(s):  
Sudipta Das ◽  
Arnab Samanta ◽  
Shouvik Mondal ◽  
Debatri Roy ◽  
Amit Kumar Nayak
Keyword(s):  
Prostate Cancer ◽  
Release Kinetics ◽  
Abiraterone Acetate ◽  
Kinetics Of

scholarly journals Risk Assessment of Agricultural Plastic Films Based on Release Kinetics of Phthalate Acid Esters

2021 ◽  
Vol 55 (6) ◽  
pp. 3676-3685
Author(s):  
Yu Wang ◽  
Fang Wang ◽  
Leilei Xiang ◽  
Chenggang Gu ◽  
Marc Redmile-Gordon ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Release Kinetics ◽  
Plastic Films ◽  
Kinetics Of ◽  
Acid Esters ◽  
Phthalate Acid Esters

scholarly journals Halloysite nanotubes filled with salicylic acid and sodium diclofenac: effects of vacuum pumping on loading and release properties

2021 ◽  
Author(s):  
Lorenzo Lisuzzo ◽  
Giuseppe Cavallaro ◽  
Stefana Milioto ◽  
Giuseppe Lazzara
Keyword(s):  
Salicylic Acid ◽  
Release Kinetics ◽  
Halloysite Nanotubes ◽  
Drug Molecules ◽  
Sodium Diclofenac ◽  
Tunable Release ◽  
Feature Based ◽  
Kinetics Of ◽  
Filling Mechanism

AbstractIn this work, we investigated the effects of the vacuum pumping on both the loading efficiencies and the release kinetics of halloysite nanotubes filled with drug molecules dissolved in ethanol. As model drugs, salicylic acid and sodium diclofenac were selected. For comparison, the loading of the drug molecules was conducted on platy kaolinite to explore the key role of the hollow tubular morphology on the filling mechanism of halloysite. The effects of the pressure conditions used in the loading protocol were interpreted and discussed on the basis of the thermodynamic results provided by Knudsen thermogravimetry, which demonstrated the ethanol confinement inside the halloysite cavity. Several techniques (TEM, FTIR spectroscopy, DLS and $$\zeta$$ ζ -potential experiments) were employed to characterize the drug filled nanoclays. Besides, release kinetics of the drugs were studied and interpreted according to the loading mechanism. This work represents a further step for the development of nanotubular carriers with tunable release feature based on the loading protocol and drug localization into the carrier. Graphic abstract The filling efficiency of halloysite nanotubes is enhanced by the reduction of the pressure conditions used in the loading protocol.

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