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- 저자 : Hanieh Shaki (검색결과 2 건)
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Hanieh Shaki 한국섬유공학회 2020 Fibers and polymers Vol.21 No.11
A series of cationic and disperse dyes has been applied on to the nylon and acrylic fabrics in order for their dyeingproperties to be investigated. The build-up values and the fastness properties of the dyed fabrics such as wash, light, andrubbing fastness degrees were measured by standard methods. Moreover, the color gamut of the synthesized dyes wasmeasured on polyamide and acrylic fibers. The results showed that the synthesized dyes were able to dye polyamide fabricswith deep shades. However, synthesized azo dyes did not show good dyeing ability on acrylic fiber. The antimicrobialproperties of dyed polyamide fabrics were evaluated against various bacteria and fungi. The dyed fabrics exhibited excellentantimicrobial efficacy against both Gram-positive, Gram-negative bacteria, and fungi. The skin irritation test on azo dyes anddyed polyamide fibers with this dye was carried out. The results showed that none of the dye and dyed polyamide fiberscreated any skin irritation.
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Saeideh Rajabi,Hanieh Shaki 한국섬유공학회 2021 Fibers and polymers Vol.22 No.3
The performance of the prepared polyacrylonitrile (PAN) nanofiber membrane by electrospinning process for theremoval of lead and copper ions from aqueous solutions was investigated. The optimum electrospinning conditions wereobtained to be 14 wt% concentration, 20 kV voltages, 120 mm tips to collector distance and 0.8 ml h-1 flow rate. Chemicalfunctionalities were grafted by a two steps grafting process which involves hydrolysis and chemical modification withethyleneglycol (EG), ethylenediamine (EDA), diethylenetriamine (DTA). The prepared nanofibers were characterized byAttenuated total reflectance-Fourier transform infrared (ATR-FTIR), Scanning Electron Microscope (SEM), Atomic ForceMicroscopy (AFM), UV-Visible Spectrophotometer and Energy Dispersive X-ray Spectroscopy (EDS or EDX) analysis. Theadsorption capacity of Cu2+ and Pb2+ ions on modified PAN nanofiber mats were evaluated by atomic absorptionspectroscopy (AAS). Adsorption isotherms were used to find the model of the adsorption behavior and to calculate theremoval percentage. The results show that modified nanofibers with ethylenediamine have the maximum adsorption capacityabout of 22.954 mmol/gr and 12.367 mmol/gr for Cu2+ and Pb2+ ions, respectively. Therefore, these modified nanofibers openup delighted opportunities for the efficient removal of Pb2+ and Cu2+ from aqueous solutions.
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