Dr Majid Montazer, Mr Saied Ahankoob,
Volume 1, Issue 1 (3-2006)
Abstract
Ammonia is a weak base that can be used as an swelling agent on wool fibres before dyeing. In this study the pretreatment of wool with ammonia in different percent solutions (5, 10, 15, 20) is carried out, and its effect on dye-ability of wool by natural dyes such as madder, walnut shell, pomegranate peel, vine leaf, white and red onion skin, is analyzed. Also the effects of temperature, length of time, and concentration of ammonia on dye-ability of wool fibres were considered. Colorimetric data, and measurements of light and washing fastness were carried out, and the results of color change under ammonia treatment are reported.
Mr Mohammad Reza Shahparvari, Dr Seyed Jalal-Eddin Bassam,
Volume 7, Issue 19 (9-2011)
Abstract
Every year, during rose water extraction a huge amount of damask rose residue is produced. The transportation and disposal of these waste materials create some problems including an increase in the price of the produced rose water. In this study the use of damask rose residues in dyeing wool is assessed and a method for its use as a colorant in natural dyeing is offered. Dyeing was carried out by using the material along with some mordants such as alum, copper sulphate, iron sulphate, chlorine and tin and also without mordant by adopting pre-mordanting technique. Various amounts of mordants and colorants were used. Comparing the obtained color hue with those from other traditional colorants, it was observed that the color hue obtained from damask rose residues was greatly similar to the color hue gained from pomegranate peel. These two color hues were analyzed and compared using the carpet weavers’ views as well as measuring wash and light fastness properties using experimental methods. The results indicate that damask residues can be used as a new natural colorant particularly in carpet production. This can provide a new colorant with minimum expenses, reduce the price of rose water extraction, and prevent environmental pollution.
Mr Mohammad Reza Shahparvari, Dr Siyamak Safapour, Dr Kamaladin Gharanjig,
Volume 13, Issue 32 (3-2018)
Abstract
To increase the color range of textile. Dyeing is to be done with more than one color-shedding substances, However before the conduction of Dyeing with the form of combining color-substances, the capability and probability of the combination, that is to be tested with the scale of degree in compatibility, has to be considered.
Bearing in mind the necessity of producing a high range of color in hand-woven carpet and importance of compatibility in dyeing materials, this research is looking for the extent of compatibility in color, substances including: Madder, weld, Prangos ferulacea and walnut shell on woolen thread, Raw and mordanted with aluminum sulfate as one of the means of estimating compatibility
The result has shown that the dyeing capability in woolen thread with walnut shell in comparison with three other color shedding substances is variable. thus the similarity in extent of compatibility in three color- shedding substances: Madder substances: madder weld and Prangos ferulacea shows the high compatibility they have in common.
However differences in the diagram of dyeing of walnut shell shows little compatibility of these substances in getting combined with madder, weld and Prangos ferulacea.
After the calculating the capacity of dyeing in each of coloring substances woolen thread (on the basis of even combination of four dyeing substances with three different ratio) was dyed. The result shows that dyeing compatibility in Madder, weld and Prangos ferulacea in combination with each other is good to excellent in diagram. While combination of walnut shell with three other color substances caused very low compatibility. In addition to that, results show the effect of density and using dents in coloring.
On the whole result of this research have shown that dyeing substances madder weld and Prangos ferulacea have high compatibility with each other and have combination compatibility in the same range while possibility of combining three substances with walnut shell, duo to low compatibility is very low. The way of conducting this research is pragmatic and gathering of all the information is laboratory and library-based.
Saeedeh Rafiei, Davood Shadlou,
Volume 17, Issue 40 (9-2021)
Abstract
In the last decade, biocompatible natural dyes with antimicrobial properties have been given much attention to protect dyed fibers in handwoven carpets against microorganisms. In this research, the leaves of 6 native plants of Fars province, including Amygdalus scoparia (Arjan), Pistacia atlantica (Baneh), Carica Ficus, Shirazi thyme, Shirazi Askari grape (Vinifera) and Juglans, were used as natural dyes for wool dyeing in the presence of eight different metal mordants. The reflective spectra of the dyed samples were analyzed by a reflective spectrophotometer. In addition, the color characteristics, the brightness of the dyed samples, the variety of color shades in the presence of different mordents, washing and light fastness as well as the antibacterial properties of the dyed wool were evaluated. The results of reflection spectroscopy showed that dyed samples with the leaves of Argan, grape, thyme and fig plants had negative a* and positive b* values, which confirms their green and yellow undertones, While, dyed samples with the leaves of baneh and Juglans trees had positive a* and b* values, which proves the red and yellow undertones of these samples. Wool fibers dyed with Argan leaves, figs and thyme in the presence of different metal teeth created the most variety of colors. Ivory, cream, green, brown, olive, orange, brick and purple colors were created on wool fibers in the presence of the leaves of these plants along with different mordents. The light and washing fastness of dyed samples with all the mentioned dyes were acceptable. Wool dyed with thyme and Pistacia atlantica leaves extract showed the maximum percentage of inhibition (99%) against two types of bacteria, Escherichia coli and Staphylococcus aureus.
