Evaluation of Reactive Dye Adsorption by Chitosan-Treated Cotton Fabrics
P.
Valipour
Department of Textile and Apparel Engineering, Qaemshahr Branch, Islamic Azad University, P.O. Box: 163, Qaemshahr, Iran
author
M
Hashemi
Department of Applied Chemistry, Qaemshahr Branch, Islamic Azad University, P.O. Box: 163, Qaemshahr, Iran
author
M.R
Toosi Jamali
Department of Applied Chemistry, Qaemshahr Branch, Islamic Azad University, P.O. Box: 163, Qaemshahr, Iran
author
E.
Ekrami
Department of Textile and Apparel Engineering, Qaemshahr Branch, Islamic Azad University, P.O. Box: 163, Qaemshahr, Iran
author
text
article
2013
per
One of the common problems encountered in dyeing textiles with reactive dyes is their weak adsorption and take up by the textiles. In this work, the adsorption behavior of reactive dyes on the cotton fabric treated with chitosan was investigated. Initially, the cotton fabrics were treated with potasium periodate as an oxidating agent; subsequently impregnated with chitosan and finally dyed with two reactive dyes, with MCT (Remazol deep RR gran) and MCT/VS (Remazol deep red RGB gran) mono- and bifunctional groups. The obtained results indicated that the chitosan treatment could increase the dye adsorption as well as its fixation to cellulose. The samples, treated with chitosan followed by reduction with potassium hydrosulphate, showed the best dye adsorption properties. Generally the fastness properties of chitosan-treated cotton fabrics were acceptable as compared to untreated samples. Based on the obtained results, treatment of cotton samples with chitosan can be used in order to increase the adsorption of reactive dyes.
Journal of Textile Science and Technology
Today Textile Institute
2151-7162
3
v.
2
no.
2013
3
8
https://www.jtst.ir/article_3937_fc6ed3aac456b144ec2d14221029c9a7.pdf
Effect of Knit Structure on Tensile Properties of Warp Knitted Geogrids
M. S.
Ahmadi
Textile Engineering Department, Facelty of Engineering,Yazd University, P.O. Box: 89195-741, Yazd, Iran
author
A. A.
A. Jeddi
Textile Engineering Department, Amirkabir University of Technology, P.O. Box: 15875-4413, Tehran, Iran
author
text
article
2013
per
Geogrids are important part of geosynthetic materials and have various applications in civil engineering constructions. Some geogrids are produced by textile processing methods. These geogrids contain a reinforcement fabric coated with a polymeric substance. In this paper, two common knit structures were produced as raw fabrics for warp knitted geogrids. In these structures, high count reinforcement polyester yarns were bonded to the fabric by using polyester binder yarns with special lapping patterns. After coating with an acrylic resin and performing tensile tests on the produced geogrids, it was observed that the structure in which the reinforcing yarns were surrounded by binder yarns showed higher tensile-strength-at-break, higher elongation-at-break and lower coefficient of variation than the structure with floating yarns, due to higher structural regularity and uniform distribution of tensile loads on the coated yarns of the former structure. The new structure was found to be ideal for producing geogrids with flexible yarns.
Journal of Textile Science and Technology
Today Textile Institute
2151-7162
3
v.
2
no.
2013
9
14
https://www.jtst.ir/article_3938_0f9fd841dc7867efbee8cb9e1747db0f.pdf
Influential Factors on Proper Implementation of Organizational Resource Programming in Spinning Industry: Case Study of Mazandaran Region
M. M. A.
Tabarbaeei
Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran
author
A. R.
Rashidi
Faculty of Industrial Engineering, Firoozkoh Branch, Islamic Azad University, Postal Code: 3981838381, Firoozkoh, Iran
author
M. H.
Cheraghali
Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran
author
text
article
2013
per
The "enterprise resource planning" (ERP) and business process integration through organizations have many benefits, including increased productivity, improved quality and lower costs. However, ERP implementations are complex and expensive and the processes of ERP implementation projects often fail. In this research, the most influential elements, verified by appropriate publications and discussions with the experts, in breaking down of ERP systems has been categorized in four groups of: managerial, human resources, processing and technological factors. To determine the level of importance of each element and ranking of statistical companies, based on their readiness in implementing a successful ERP, some questionnairs were handed out. The identified elements, found by the experts, were evaluated through Shanon entropy technique to assess their degree of significance. According to the weight of every element, we ranked companies through TOPSIS technique (Excel software) and linear assignment (Lingo software and answers like Global optimal). Because of the incompatibility of some results of these two techniques, we used the combinatory mean arithmetic to reach unanimous consent. The results showed that the companies which were ready to implement ERP successfully were specifically fulfilled by their managerial and human resource preparedness.
Journal of Textile Science and Technology
Today Textile Institute
2151-7162
3
v.
2
no.
2013
15
22
https://www.jtst.ir/article_3939_533d65a16d3d7b0f06b5ee1ceb6b8f4a.pdf
A Review on Superhydrophobicity: A Characteristic Property of Textiles
Z.
Mazrouei-Sebdani
Department of Textile Engineering, Isfahan University of Technology, P.O. Box: 84156-83111, Isfahan, Iran
author
A.
Khoddami
Department of Textile Engineering, Isfahan University of Technology, P.O. Box: 84156-83111, Isfahan, Iran
author
text
article
2013
per
Surface properties sometimes play a more important role in the function of polymer materials than do the bulk of polymer materials. The surface structure of fibres is of the great importance for the properties of fibres and textiles in processing and use. Because many functions of the polymer materials, e.g. friction, adhesion, adsorption, and liquid penetration, dye ability, hydrophilicity and hydrophobicity related to the topmost layer of the materials. In order to develop textile materials with the desired performance, the surface of fibres is often modified with polymer coatings before use. Water and soil repellency has been one of the major targets for fiber and textile scientists and manufacturers for centuries. To attain limited wettability, in addition to use of a layer with low surface energy, it is necessary to change surface structure in nano-micro scales. These surfaces are known as superhydrophobic surfaces with properties such as lotus leaves. To fabricate superhydrophobic surface on metal, glass, polymer and textiles, many methods and materials are examined to create proper surface roughness and low surface energy, respectivelly. In this review paper, production and properties of superhydrophobic textiles are reported.
Journal of Textile Science and Technology
Today Textile Institute
2151-7162
3
v.
2
no.
2013
23
38
https://www.jtst.ir/article_3943_778604ef8f360821a55e497b40aadfed.pdf
Effect of Sliver Feeding Position in a Drawing Frame on Radial Distribution of Fibers in Cross-Section of Cotton-Polyester Blended Yarn
A. R.
Hoseinpour Kasgari
Department of Textile Engineering, Qaemshar Branch, Islamic Azad University, P.O. Box: 163, Qaemshahr, Iran
author
A. R.
Moghassem
Department of Textile Engineering, Qaemshar Branch, Islamic Azad University, P.O. Box: 163, Qaemshahr, Iran
author
M.
Soleimani Ashrafi
Department of Textile Engineering, Qaemshar Branch, Islamic Azad University, P.O. Box: 163, Qaemshahr, Iran
author
P.
Valipour
Department of Textile Engineering, Qaemshar Branch, Islamic Azad University, P.O. Box: 163, Qaemshahr, Iran
author
text
article
2013
per
Nine different ring cotton-polyester blended yarns (50/50) were prepared to study the effects of sliver feeding position in drawing frame on fibers distribution in yarn cross-section and its properties. Different slices of each type of yarn were cut to take images of yarn cross-section after spinning and dying processes. First, the radial distribution of fibers in yarn cross-section was analyzed using Hamilton migration index. The strength and elongation-at-break of the samples were assessed as two parameters for possible changes affected by fibers positioning. The results showed that, cotton and polyester sliver feeding position in drawing frame did affect fiber distribution of the yarn cross-sectionally as the Hamilton migration index and fiber frequency distribution were different in the prepared yarns. Migration indexes were varied between 9% and 58% in the spun yarns. In addition, there were found meaningful differences between the strength and elongation-at-break of the yarns due to changes in fiber positioning mode which would help to obtain yarns with minimum and maximum strengths.
Journal of Textile Science and Technology
Today Textile Institute
2151-7162
3
v.
2
no.
2013
39
46
https://www.jtst.ir/article_3944_23e73731e614131b596707f156c03e3c.pdf
Derivation of Fabric Parameters from Simulated Imaging by Genetic Algorithm Method
F.
Fasahat
Department of Textile Engineering, Faculty of Engineering, Yazd University, P.O. Box: 89195-741, Yazd, Iran
author
P.
Peivandi
Department of Textile Engineering, Faculty of Engineering, Yazd University, P.O. Box: 89195-741, Yazd, Iran
author
text
article
2013
per
Detecting correct color and weave patterns in colored yarn fabrics is one of the most important demands of fabric designers and manufacturers; it is time consuming and acquires high working precision. In this regard, image processing of metaheuristic algorithms can present a useful method for achieving this point. In this research, a novel method, based on genetic algorithm, has been applied to distinguish fabric parameters of color pattern, its period number and weave pattern simultaneously. The parameters have been extracted from the fabric images simulated manually by the computer. The algorithm has been performed on 30 simulated fabric images with different weave and color patterns in variable sizes. Results indicate that in all the images except the defective ones, the fitness values of 100% have been obtained. In spite of existing maximum 3 faults in the simulated image, the presented algorithm is capable of detecting correct color patterns.
Journal of Textile Science and Technology
Today Textile Institute
2151-7162
3
v.
2
no.
2013
47
56
https://www.jtst.ir/article_3945_459d2b1dca3878aee19ce4222059d266.pdf