Univerzitetska misao - casopis za nauku, kulturu i umjetnost, Novi Pazar
This paper deals with the analysis of the historical work from the beginning of the ancient era, ... more This paper deals with the analysis of the historical work from the beginning of the ancient era, when painting was considered a craft, until today, where the artist has complete freedom of expression. It is about the time when painting was declared as a spiritual skill and through which stages painting and society itself went through. Many challenges were imposed on artists in order to survive in the coming periods, until they fully freed themselves and started making pure art from the depths of their souls. Pictures that are full of emotions and feelings can only create a pure spirit. Artists resisted the way they were accepted in society, with new rebellious ideas of the time. Starting with modernism and the emergence of abstract painting, and later abstract expressionism. The very position of the most influential artists of those periods in which they lived is analyzed in this paper. Through various applications of their most famous works, how their art contributed to the develop...
This research work describes the advantages of dyeing wool fibers at 60 °C after pre-treatment wi... more This research work describes the advantages of dyeing wool fibers at 60 °C after pre-treatment with alcohol. Wool is a natural fiber. This fiber can be dyed with acid, metal-complex and other dyes. Acid dyes should be soluble in water and most commonly used for dyeing wool, silk and nylon. Wool fibers with 100 % chemical composition were used in this study. The wool fiber was pre-treated in alcohol (npentanol) at a temperature of 60 °C for 30 minutes. Pre-treated wool fibers were dyed with Supramin Blau acid dye. The time for dyeing samples of wool fibers was 5, 10, 20, 30, 40, 50 and 60 minutes. The process of dyeing wool fibers with acid dye at 60 °C showed a higher degree of exhaustion and adsorption capacity when wool was pre-treated with n-pentanol compared to wool that was not pre-treated with n-pentanol. A constant increase in the degree of dye exhaustion on the pretreated wool fiber was observed during the increase in initial dye concentration. A longer dyeing time for pre-t...
The equilibrium sorption of dyeing polyamide 6.6 fabric with reactive dye is presented in this pa... more The equilibrium sorption of dyeing polyamide 6.6 fabric with reactive dye is presented in this paper. Polyamide is a chemical fiber obtained from synthetically produced polymers, while reactive dyes are most often sulfonated azo compounds: which are derived from bendisidine and its derivatives. The solution in a constant volume contained dye concentrations of 5, 10, 15, 20, 30, 40 and 50 mg/L. The samples were dyed at temperatures of 40, 60 and 98°C. A spectrophotometer (Cary 100 Conc UV-VIS, Varian) was used to measure the absorbance of aqueous dyed solutions and to calculate the unknown dye concentration in the solution and to construct a calibration curve. The degree of dye exhaustion and the amount of absorbed dye were calculated. Two models of adsorption isotherms were used: Freundlich and Florry-Huggins. The high functionality of the variable was observed in the Freundlich model.
The new knowledge through a concrete scientific study of the dyeing process of polyamide filament... more The new knowledge through a concrete scientific study of the dyeing process of polyamide filament yarns (nylon yarn) with anionic dye in slightly acidic medium without any other additives (electrolyte, yeast, equalizer, etc.) in order to transfer the process in industrial conditions have investigated in this study. Generally, polyamide fibers (nylon, PA) have a different but similar chemical composition, depending on the base materials used for their synthesis. Anionic dye is usually used for dyeing cellulosic materials, but in special cases it can also be used for dyeing other textile raw materials. In this study, samples of polyamide filament yarn of linear density of 151 Nm have dyed with anionic dye at a temperature of 95 °C. Acetic acid was added in the dyeing solution to adjust the pH of the medium. The used dye is marked like C.I. Direct Red 1. The used dye concentrations for dyeing the samples were 5, 10, 15 and 20 mg/dm3, while the time of the dyeing process were 5, 10, 15,...
News about the process of dyeing a polyamide yarn with unconventional direct textile dye, which i... more News about the process of dyeing a polyamide yarn with unconventional direct textile dye, which is conventional for dyeing cotton yarns have described in this study. An attempt to polyamide yarn dyeing with this type of dye in laboratory is done in order to create realistic possibilities for application in industrial conditions. Polyamide is a chemical fiber obtained from synthetically produced polymers, while direct dyes are sulphonated azo compounds: derived from benzidine and his derivates or type of amine diaminostylene and others. In the experiment, the samples of polyamide yarn with linear density of 6,6 tex (units for fineness) has used. The yarn has dyed with a direct dye of a specific structure that has a predisposition to connect to this fiber. Dyeing time with continuous mixing was 5, 10, 15, 25 and 40 minutes. Also, in dyeing solution, to achieve a certain pH solution, acetic acid is added. The applied dye is marked like a C.I. Direct Brown 2 (azo-dye). The constant bulk...
In this paper was investigated the influence of various factors on the dyeing of natural cellulos... more In this paper was investigated the influence of various factors on the dyeing of natural cellulose fabric with direct dye. The dyeing was realiyed in laboratoryʼs conditions with the tendency to trasfer and apply results in the industry. The applied fabric is 100% natural cellolose fabric derived from linen fibers was used. In this study, the samples of natural cellulose fabricf of linear density of warp and weft 73 and 63 tex (units for fineness) and surface mass of the fabric 238 gm-2 have used. Flax is a natural cellulose fiber and is one of the oldest textile fibers that people used to make fabrics for clothing and other needs. The fibers has dyed with a direct dye with specific structure that has a predisposition to connect to this fiber. Direct dyes, by chemical composition, are mainly sulfonated azo compounds which are derived from benzidine and its derivatives or amines type like diaminostilbene. All direct dyes are soluble in water, but some of them are soluble in low-alco...
News about the process of dyeing of natural cellulose fibers with anionic dye, with special refer... more News about the process of dyeing of natural cellulose fibers with anionic dye, with special reference to the color choice and the novelty that dyeing brings to them was investigated in this paper. Natural cellulose fibers like the flax fiber, come from a year-old herbaceous plant, there are different types of flax and each of them requires special climatic conditions. In ancient times, Egypt was the most famous country for producing these types of fibers. Flax as well as other natural cellulose fibers are used because of his excellent resistance on straining, low density, low cost, biodegradability and excellent properties such as flexibility, high specific strength and high specific modulus. Samples of natural cellulose fibers in the form of fabric were the following characteristics: longitudinal mass of warp and weft 73 and 63 tex, density of warp and weft wires 17 and 16 cm-1, surface mass of fabric 238 gm-2. The samples has dyed with special types of anionic dyes at a temperatu...
Chemical Industry and Chemical Engineering Quarterly
This article presents the study of direct dye sorption onto the flax fiber during the dyeing proc... more This article presents the study of direct dye sorption onto the flax fiber during the dyeing process in the presence of an inorganic electrolyte. The previously prepared linen fabric was subjected to dyeing by a standard process, varying in concentration and time of dyeing. The results are satisfactory considering that they reveal the character of the direct dye sorption for fibers as well as the capacity and energy adsorption, on the basis of which the process of dyeing can be optimized. The increase of dye concentration in the solution during dyeing decreases, and longer time of dyeing increases the degree of exhaustion. The adsorbed amount of adsorbate on the adsorbent rises during the increase of initial concentration and dyeing time. Langmuir, Freundlich, Temkin and Flory-Huggins models can be used to describe adsorption of a direct dye onto the linen fiber, having in mind the advantage of Flory-Huggins model because of its characteristics in the description of the sorption and...
Univerzitetska misao - casopis za nauku, kulturu i umjetnost, Novi Pazar
This paper deals with the analysis of the historical work from the beginning of the ancient era, ... more This paper deals with the analysis of the historical work from the beginning of the ancient era, when painting was considered a craft, until today, where the artist has complete freedom of expression. It is about the time when painting was declared as a spiritual skill and through which stages painting and society itself went through. Many challenges were imposed on artists in order to survive in the coming periods, until they fully freed themselves and started making pure art from the depths of their souls. Pictures that are full of emotions and feelings can only create a pure spirit. Artists resisted the way they were accepted in society, with new rebellious ideas of the time. Starting with modernism and the emergence of abstract painting, and later abstract expressionism. The very position of the most influential artists of those periods in which they lived is analyzed in this paper. Through various applications of their most famous works, how their art contributed to the develop...
This research work describes the advantages of dyeing wool fibers at 60 °C after pre-treatment wi... more This research work describes the advantages of dyeing wool fibers at 60 °C after pre-treatment with alcohol. Wool is a natural fiber. This fiber can be dyed with acid, metal-complex and other dyes. Acid dyes should be soluble in water and most commonly used for dyeing wool, silk and nylon. Wool fibers with 100 % chemical composition were used in this study. The wool fiber was pre-treated in alcohol (npentanol) at a temperature of 60 °C for 30 minutes. Pre-treated wool fibers were dyed with Supramin Blau acid dye. The time for dyeing samples of wool fibers was 5, 10, 20, 30, 40, 50 and 60 minutes. The process of dyeing wool fibers with acid dye at 60 °C showed a higher degree of exhaustion and adsorption capacity when wool was pre-treated with n-pentanol compared to wool that was not pre-treated with n-pentanol. A constant increase in the degree of dye exhaustion on the pretreated wool fiber was observed during the increase in initial dye concentration. A longer dyeing time for pre-t...
The equilibrium sorption of dyeing polyamide 6.6 fabric with reactive dye is presented in this pa... more The equilibrium sorption of dyeing polyamide 6.6 fabric with reactive dye is presented in this paper. Polyamide is a chemical fiber obtained from synthetically produced polymers, while reactive dyes are most often sulfonated azo compounds: which are derived from bendisidine and its derivatives. The solution in a constant volume contained dye concentrations of 5, 10, 15, 20, 30, 40 and 50 mg/L. The samples were dyed at temperatures of 40, 60 and 98°C. A spectrophotometer (Cary 100 Conc UV-VIS, Varian) was used to measure the absorbance of aqueous dyed solutions and to calculate the unknown dye concentration in the solution and to construct a calibration curve. The degree of dye exhaustion and the amount of absorbed dye were calculated. Two models of adsorption isotherms were used: Freundlich and Florry-Huggins. The high functionality of the variable was observed in the Freundlich model.
The new knowledge through a concrete scientific study of the dyeing process of polyamide filament... more The new knowledge through a concrete scientific study of the dyeing process of polyamide filament yarns (nylon yarn) with anionic dye in slightly acidic medium without any other additives (electrolyte, yeast, equalizer, etc.) in order to transfer the process in industrial conditions have investigated in this study. Generally, polyamide fibers (nylon, PA) have a different but similar chemical composition, depending on the base materials used for their synthesis. Anionic dye is usually used for dyeing cellulosic materials, but in special cases it can also be used for dyeing other textile raw materials. In this study, samples of polyamide filament yarn of linear density of 151 Nm have dyed with anionic dye at a temperature of 95 °C. Acetic acid was added in the dyeing solution to adjust the pH of the medium. The used dye is marked like C.I. Direct Red 1. The used dye concentrations for dyeing the samples were 5, 10, 15 and 20 mg/dm3, while the time of the dyeing process were 5, 10, 15,...
News about the process of dyeing a polyamide yarn with unconventional direct textile dye, which i... more News about the process of dyeing a polyamide yarn with unconventional direct textile dye, which is conventional for dyeing cotton yarns have described in this study. An attempt to polyamide yarn dyeing with this type of dye in laboratory is done in order to create realistic possibilities for application in industrial conditions. Polyamide is a chemical fiber obtained from synthetically produced polymers, while direct dyes are sulphonated azo compounds: derived from benzidine and his derivates or type of amine diaminostylene and others. In the experiment, the samples of polyamide yarn with linear density of 6,6 tex (units for fineness) has used. The yarn has dyed with a direct dye of a specific structure that has a predisposition to connect to this fiber. Dyeing time with continuous mixing was 5, 10, 15, 25 and 40 minutes. Also, in dyeing solution, to achieve a certain pH solution, acetic acid is added. The applied dye is marked like a C.I. Direct Brown 2 (azo-dye). The constant bulk...
In this paper was investigated the influence of various factors on the dyeing of natural cellulos... more In this paper was investigated the influence of various factors on the dyeing of natural cellulose fabric with direct dye. The dyeing was realiyed in laboratoryʼs conditions with the tendency to trasfer and apply results in the industry. The applied fabric is 100% natural cellolose fabric derived from linen fibers was used. In this study, the samples of natural cellulose fabricf of linear density of warp and weft 73 and 63 tex (units for fineness) and surface mass of the fabric 238 gm-2 have used. Flax is a natural cellulose fiber and is one of the oldest textile fibers that people used to make fabrics for clothing and other needs. The fibers has dyed with a direct dye with specific structure that has a predisposition to connect to this fiber. Direct dyes, by chemical composition, are mainly sulfonated azo compounds which are derived from benzidine and its derivatives or amines type like diaminostilbene. All direct dyes are soluble in water, but some of them are soluble in low-alco...
News about the process of dyeing of natural cellulose fibers with anionic dye, with special refer... more News about the process of dyeing of natural cellulose fibers with anionic dye, with special reference to the color choice and the novelty that dyeing brings to them was investigated in this paper. Natural cellulose fibers like the flax fiber, come from a year-old herbaceous plant, there are different types of flax and each of them requires special climatic conditions. In ancient times, Egypt was the most famous country for producing these types of fibers. Flax as well as other natural cellulose fibers are used because of his excellent resistance on straining, low density, low cost, biodegradability and excellent properties such as flexibility, high specific strength and high specific modulus. Samples of natural cellulose fibers in the form of fabric were the following characteristics: longitudinal mass of warp and weft 73 and 63 tex, density of warp and weft wires 17 and 16 cm-1, surface mass of fabric 238 gm-2. The samples has dyed with special types of anionic dyes at a temperatu...
Chemical Industry and Chemical Engineering Quarterly
This article presents the study of direct dye sorption onto the flax fiber during the dyeing proc... more This article presents the study of direct dye sorption onto the flax fiber during the dyeing process in the presence of an inorganic electrolyte. The previously prepared linen fabric was subjected to dyeing by a standard process, varying in concentration and time of dyeing. The results are satisfactory considering that they reveal the character of the direct dye sorption for fibers as well as the capacity and energy adsorption, on the basis of which the process of dyeing can be optimized. The increase of dye concentration in the solution during dyeing decreases, and longer time of dyeing increases the degree of exhaustion. The adsorbed amount of adsorbate on the adsorbent rises during the increase of initial concentration and dyeing time. Langmuir, Freundlich, Temkin and Flory-Huggins models can be used to describe adsorption of a direct dye onto the linen fiber, having in mind the advantage of Flory-Huggins model because of its characteristics in the description of the sorption and...
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Papers by Milena Nikodijevic