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نمایش تعداد 1-10 از 42
A new technique for extraction of metal ions in water samples, combination of multiwalled carbon nanotubes and polypropylene hollow fiber as a solid-liquid microextraction technique
A novel, simple, cost-effective, and sensitive method was developed for the determination of metal ions in water samples using multi-walled carbon Nanotubes as solid-phase adsorbents coupled with hollow fiber liquid phase microextraction...
Preparation and characterization of PVDF-CTFE hollow fibre membranes using thermal induced phase separation -TIPS-
to fabricate polymeric membranes. In spite of the advantages of the TIPS method, it has not reported any attempt to fabricate PVDF-CTFE membrane by TIPS method either in flat-sheet or hollow fiber geometry. In this study, we attempted to prepare a hollow fiber...
Poly-ethylene chlorotrifluoroethylene- hollow fiber membranes fabrication via thermally induced phase separation -TIPS-
A porous poly -ethylene-chlorotrifluoroethylene- -ECTFE- hollow fiber membrane with a high performance were prepared using HALAR® ECTFE 901 and different diluents diethyl phthalate -DEP- and glycerol triacetate -GTA-. When the ECTFE concentration...
ECTFE hollow fiber membranes preparation via thermally induced phase separation -TIPS-
- offers unique chemical resistance, high temperature resistance, excellent mechanical properties and durability. These outstanding properties make ECTFE as a promising polymer for membrane applications.
In this study, a porous ECTFE hollow fiber...
Surface Modification of PAN Hollow Fiber Membrane by Chemical Reaction
Abstract: In this study, a new method was applied to achieve an efficient surface modification of Polyacrylonitrile (PAN) hollow fiber membrane. The surface modification dealt by immersion of PAN hollow fibers in hydroxylamine solution under various...
Improving antifouling performance of PAN hollow fiber membrane using surface modification method
In this study, a new approach to improve antifouling performance of polyacrylonitrile (PAN) hollow fiber membrane has been explained. Firstly, chemical modification with sodium hydroxide (NaOH) solution was performed on PAN membranes in various...
Neural networks modeling of hollow fiber membrane processes
Generalization performances of two different neural networks are compared with a conventional software for prediction of hollow fiber permeances and the corresponding separation factors. Two experimental data sets were used as the training data...
Preparation and characterization of ECTFE hollow fiber membranes via thermally induced phase separation (TIPS)
of homogenous ECTFE solutions with the required properties for fabricating a hollow fiber membrane. The thermodynamic phase diagrams for both systems (ECTFE/DEP and ECTFE/GTA) showed a liquid–liquid (L-L) phase separation region, which is needed for a...