Potentiometric Study and Biological Activity of Some Metal Ion Complexes of Polyvinyl Alcohol (PVA).

Hosny, Wafaa M.; Khalaf-Alaa, Perihan A.

doi:10.1016/s1452-3981(23)14116-2

International Journal of Electrochemical Science

2013

DOI: 10.1016/s1452-3981(23)14116-2

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Potentiometric Study and Biological Activity of Some Metal Ion Complexes of Polyvinyl Alcohol (PVA).

Wafaa M. Hosny,

Perihan A. Khalaf-Alaa

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Cited by 27 publications

References 24 publications

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Fluid‐dynamic gauging for studying the initial swelling of soft solid layers

Tsai¹,

Cuckston²,

Hallmark³

et al. 2019

AIChE Journal

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An innovative fluid-dynamic gauging (FDG) device to study the initial as well as longterm swelling or removal of soft solid layers immersed in a liquid environment in real time and in situ is presented. This sideways FDG (SiDG) device was developed for soft solid layers whose properties change significantly on contact with liquid. Calibration tests indicated a resolution of ±10 μm. The open source computational fluid dynamics (CFD) code OpenFOAM was used to model the flow in the SiDG nozzle. Good agreement was obtained between experimental and CFD results at different nozzle clearances, so that the shear stress exerted by the gauging flow can be computed accurately. A series of demonstration studies are presented, on layers of petroleum jelly, polyvinyl acetate, gelatin and a complex model soil. Initial swelling dynamics are captured and the influence of pH on initial swelling behavior, previously inaccessible, is reported.

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Fluid‐dynamic gauging for studying the initial swelling of soft solid layers

Tsai¹,

Cuckston²,

Hallmark³

et al. 2019

AIChE Journal

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show abstract

Forcespun polyvinylpyrrolidone/copper and polyethylene oxide/copper composite fibers and their use as antibacterial agents

Hasan

Gonzalez

Munoz

et al. 2021

J of Applied Polymer Sci

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Copper nanoparticles (CuNPs) embedded in polyvinylpyrrolidone (PVP) and polyethylene oxide (PEO) fiber-matrices were prepared through centrifugal spinning of PVP/ethanol and PEO/aqueous solutions, respectively. The prime focus of the current study is to investigate the antibacterial activity of composite fibers against Escherichia coli (E. coli) and Bacillus cereus (B. cereus) bacteria. During the fiber formation, the centrifugal spinning parameters such as spinneret rotational speed, spinneret to collector distance, and relative humidity were carefully chosen to obtain long and continuous fibers. The structural and morphological analyses of both composite fibers were investigated using scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, and thermogravimetric analysis. In the antibacterial test, PVP/Cu and PEO/Cu composite fibrous membranes exhibited inhibition efficiency of 99.98% and 99.99% against E. coli and B. cereus bacteria, respectively. Basically, CuNPs were well embedded in the fibrous membrane at the nanoscale level, which facilitated the inhibition of bacterial functions through the inactivation of the chemical structure of the cells. Such an effective antibacterial agent obtained from forcespun composite fibers could be promising candidates for biomedical applications.

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Influence of retardation and acceleration of setting time on the efficiency of water defluoridation by calcined gypsum

Al-Bedoor

Al‐Rawajfeh

Jaradat

et al. 2017

Int. J. Environ. Sci. Technol.

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Potentiometric Study and Biological Activity of Some Metal Ion Complexes of Polyvinyl Alcohol (PVA).

Cited by 27 publications

References 24 publications

Fluid‐dynamic gauging for studying the initial swelling of soft solid layers

Fluid‐dynamic gauging for studying the initial swelling of soft solid layers

Forcespun polyvinylpyrrolidone/copper and polyethylene oxide/copper composite fibers and their use as antibacterial agents

Influence of retardation and acceleration of setting time on the efficiency of water defluoridation by calcined gypsum

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