Characterization of the cylindrical electrospun nanofibrous polysulfone membrane for hemodialysis with modelling approach

2021 ◽  
Author(s):  
Farideh Mohammadi ◽  
Farzaneh Mohammadi ◽  
Zeynab Yavari
Keyword(s):  
Polysulfone Membrane ◽  
Modelling Approach

Development and characterization of a thermoresponsive polysulfone membrane using an environmental friendly technology

2009 ◽  
Vol 11 (5) ◽  
pp. 638 ◽  
Author(s):  
Márcio Temtem ◽  
Daniel Pompeu ◽  
Telma Barroso ◽  
João Fernandes ◽  
Pedro C. Simões ◽  
...  
Keyword(s):  
Polysulfone Membrane ◽  
Environmental Friendly

A volume integral approach for the modelling and design of HTS coils

2019 ◽  
Vol 38 (4) ◽  
pp. 1133-1140 ◽  
Author(s):  
Yazid Statra ◽  
Hocine Menana ◽  
Lamia Belguerras ◽  
Bruno Douine
Keyword(s):  
Power Law ◽  
Strong Dependence ◽  
Superconducting Devices ◽  
Electromagnetic Properties ◽  
Integral Approach ◽  
Volume Integral ◽  
Content Type ◽  
High Level ◽  
Modelling Approach

Purpose The purpose of this paper is to develop a rapid and realistic modelling approach for the design and characterization of high temperature superconducting (HTS) coils and windings carrying DC currents. Indeed, the strong dependence of the electromagnetic properties of such materials on the magnetic field makes the design and characterization of HTS systems a delicate operation where local quantities have to be evaluated. Design/methodology/approach A volume integral modelling approach has been developed taking into account the electric nonlinearity of the HTS material which is represented by power law. The variations of the characteristic quantities of the HTS (critical current density and power law exponent) with the magnetic flux density are also taken into account by using Kim’s law. The volume integral modelling allows to model only the active parts of the system and thus to overcome the difficulties linked to the multiscale dimensions. Findings The model has been tested in a case study in which simulation results were compared to measurements and to finite element analysis. A good agreement was found which validates the model as a rapid and efficient tool for HTS coils and windings design and modelling. Practical implications HTS coils are important elements of emerging superconducting devices which require a high level of reliability, such as generators or motors. The proposed approach is interesting to speed up the design and optimization procedures of such systems. Originality/value Advanced structures of the basic elements have been used in the volume integral modelling, which results in a considerable gain in computation time and in memory-space saving while keeping a high level of precision and realism of the modelling, which has been verified experimentally.

Mass Transfer Characterization of a New Polysulfone Membrane

1985 ◽  
Vol 9 (2) ◽  
pp. 180-183 ◽  
Author(s):  
H. Schneider ◽  
E. Streicher
Keyword(s):  
Mass Transfer ◽  
Polysulfone Membrane

Preparation and Characterization of Polysulfone Membrane for Gas Separation

2014 ◽  
Vol 917 ◽  
pp. 307-316 ◽  
Author(s):  
Norwahyu Jusoh ◽  
Lau Kok Keong ◽  
Azmi Mohd Shariff
Keyword(s):  
Polymer Concentration ◽  
Testing Machine ◽  
Skin Layer ◽  
Polysulfone Membrane ◽  
Thermogravimetric Analyzer ◽  
Membrane Fabrication ◽  
Universal Testing ◽  
Infra Red ◽  
Methyl Pyrrolidone

Symmetric and asymmetric polysulfone membranes were fabricated using different of solvents; N-methyl-pyrrolidone (NMP), Tetrahydrofuran (THF) and Dimethylacetamide (DMAC) at different polymer concentration (15 and 20%) to study the influence of varying type of solvents and polymer concentration in membrane fabrication. The membranes were characterized using Field Emission Scanning Electron Microscopy (FESEM), Thermogravimetric Analyzer (TGA), Universal Testing Machine (UTM) and Fourier Transform Infra-Red (FTIR).The results disclosed that the symmetric, higher polymer concentration membrane contributed to better thermal and mechanical stabilities. PSF/THF membrane showed good mechanical strength while PSF/DMAC membrane illustrated great thermal stability. 20% of polymer concentration and PSF/THF membrane led to the thicker skin layer and dense structure formation.

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