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RISS 인기검색어
- 검색키워드
- 저자 : Siyamak Safapour (검색결과 6 건)
- 무료
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Siyamak Safapour,Mousa Sadeghi-Kiakhani,Solmaz Eshaghloo-Galugahi 한국섬유공학회 2018 Fibers and polymers Vol.19 No.7
Fruits obtained from shrubs of the Crataegus elbursensis (C. elbursensis) plant demonstrate significant antioxidant and antibacterial properties. In this study, natural dye was sono-extracted from fresh and dried fruits and applied in dyeing and antibacterial finishing of wool. The maximum sono-extraction yield was obtained when optimal conditions of ethanol/ water (4/1 v/v) as extracting solvent, time 30 min, pH 4, temperature 50 oC, and C. elbursensis concentration 10 g/l were used. When wool yarns were dyed with the extracted natural dye, the maximum dye uptake was achieved using dye concentration 75 % owf, and dyeing condition of 100 oC, 60 min, pH 4, and LR 100:1. Different metal salts like aluminum sulfate, copper sulfate, and tin chloride were applied on wool by pre-mordanting method and their effects on dye uptake, color variation, and color fastness were examined. Results showed that the natural dye itself had relatively high uptake and good color fastness on un-mordanted wool. Further, each mordant had different effect on dye uptake, color variation, and color fastness properties depending on its coordination ability with dye molecules and wool chains. Moreover, dyed yarns showed good antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) bacteria.
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Siyamak Safapour,Luqman Jameel Rather,Javad Moradnejad,Shazia Shaheen Mir 한국섬유공학회 2023 Fibers and polymers Vol.24 No.12
In recent years, bio-dyes are being increasingly explored as promising sustainable alternatives for cleaner dyeing and functional finishing of textiles. In this study, an ecological approach was presented for clean dyeing and functionalization of wool using flavonoid-based bio-dyes extracted from lemon balm plant. First, dyeing parameters (pH, time, temperature, and dye concentration) were optimized using one-factor-at-a-time (OFAT) optimization technique. Afterwards, wool yarns were dyed using 75% (o.w.f.) of bio-dyes in conjunction with different bio-mordants (Quercus infectoria and Eucalyptus camaldulensis leaves), metal salts (Cu2+ and Fe2+), and their binary combinations. Practically, nine different sober color shades (control dyeing: Yellowish brown; Fe2+: Raw umber color; Cu2+: Satin sheen gold color; GN: Tan color; EU: Fallow color; Fe/GN: Van dyke color; Fe/Eu: Wenge color; Cu/GN: Coyote color; Cu/Eu: Khaki color) were obtained. Additionally, dyed wool exhibited excellent antibacterial, antioxidant, and UV-protection behaviors. Indeed, the introduction of metal ions (Fe2+ and Cu2+) and bio-mordants enhanced the color depth and fastness properties and imparted a semi-durable antimicrobial and antioxidant finish with 80% retention of activity after 20 washing cycles. The results of this study confirmed the potential of lemon balm as a promising source of bio-dyes to impart a semi-durable antimicrobial and antioxidant finish with a bright future in the biomedical textile division and healthcare applications with UV protection.
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Siyamak Safapour,Majid Mazhar,Saiedeh Abedinpour 한국섬유공학회 2023 Fibers and polymers Vol.24 No.9
Reseda luteola L., commonly known as weld, is an important source of yellow natural dye used for dyeing the wool textiles since ancient times. In this study, to develop the color shades of weld on wool textiles, single and binary combinations of eight metal mordants, i.e., Al, Fe, Cu, Co, Zn, Sn, Ni, and Cr were explored using the premordanting method. Depending on the type and nature of mordant in the mixture, substantial variations in the color shades, lightness, color strength, and fastness of the samples resulted. In addition to metal mordants that individually improved color strength, color fastness and produced various color shades, binary mordanting showed several novel features in terms of the development of new color shades, the synergistic effect of dye uptake (color strength), and color fastness, etc. Furthermore, several rare or unique shades of high-cost and toxic mordants, such as Cr, could be reproduced using alternative binary low-cost and non- or less toxic mordants, such as Fe and Cu.
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Mousa Sadeghi-Kiakhani,Siyamak Safapour 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.33 No.-
Nylon fabric surface modification using chitosan-poly(propylene imine) dendreimer hybrid (CS-PPI) as anovel eco-friendly finishing agent has been reported. Effects of some operational parameters such as pH,temperature, time and CS-PPI concentration on grafting yield were examined through dye up-take usingtwo commercial reactive dyes in terms of color strength (K/S). FTIR, SEM, and DSC data confirmed thegrafting of CS-PPI onto nylon substrate. Optimal grafting values obtained were pH 4, temperature 60 8C,time 6 h and 2.5 g/L CS-PPI concentration. The performance of CS-PPI grafted nylon was investigated interms of its dyeability, color fastness, and antimicrobial properties
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Mousa Sadeghi-Kiakhani,Siyamak Safapour,Fahimeh Sabzi,Ali Reza Tehrani-Bagha 한국섬유공학회 2020 Fibers and polymers Vol.21 No.1
Low-energy UV lamps were used for the pretreatment of wool yarns and its effects were investigated in terms ofsurface morphology, tensile strength, and percentage dye uptake. Subsequently, raw and UV-treated wool yarns were dyedwith Cochineal dye and the essential parameters affecting the dyeing process (i.e., temperature, pH, duration) weredetermined. The results showed that the color strength of the samples increased by (a) increasing the pre-treatmenteffectiveness (i.e., UV irradiation strength and its duration), and (b) increasing the influential dyeing parameters (i.e., highertemperature, higher initial dye concentration in the dye bath, longer dyeing time, and acidic pH). The UV irradiationpretreatment also enhanced the color fastness properties of the dyed samples under the same dyeing conditions. The resultssuggested that an eco-friendly, acid-free, and relatively cheaper dyeing process could be developed for the wool fiberspretreated with scalable and straightforward UV irradiation pretreatment.
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Mohammad Reza Shahparvari,Mahdi Safi,Siyamak Safapour,Kamaledin Gharanjig 한국섬유공학회 2018 Fibers and polymers Vol.19 No.8
In the present research, a method of assessing relative compatibility rating of single and binary mixtures of walnut green shell, cochineal, and weld natural dyes on aluminum pre-mordanted woolen yarns was proposed, where a proportion of the calculated diffusion coefficients of dyes was postulated. To calculate the diffusion coefficient values, the uptake behavior of dyes was derived as the K/S and the exhaustion curves by dyeing the woolen yarn samples with the individual dye as well as with the mixtures of dyes obtained from practical conditions of dyeing. A typical method was employed to dye the samples at two temperatures of 80 and 95 oC. The method proposed for determination of the compatibility of dyes was more verified at higher temperature, that is, 95 oC, against a conventional method of solution analysis. The results of compatibility showed that the selected binary mixtures of cochineal-weld have an excellent compatibility. The other mixtures, that is, walnut green shell-cochineal and walnut green shell-weld showed weak-moderate and very weak compatibility, respectively.
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