ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 1 2022 02 01 Effective Parameters, Modeling, and Materials in Sound Absorption: A Review 3 21 143607 10.48302/jtp.2022.143607 EN Seyed Hassan Paknejad Department of Textile Engineering, Yazd University, Yazd, Iran Morteza Vadood Department of Textile Engineering, Yazd University, Yazd, Iran Journal Article 2022 01 22 - Textiles are used in most industries, due to their specific physical and mechanical characteristics. These materials are used as sound absorbent because of their porous structures. Moreover, textiles are less expensive, lightweight and recyclable. This article reviews the mechanisms, experimental modeling and research that has been done in the last two decades in the field of sound absorption in fibers, carpets, composites, woven fabrics, knitted fabrics, and spacers. There are several parameters affecting the sound absorption of textiles, and the effectiveness of each parameter is specific to each textile. Therefore, the best usage of each kind of textiles can be determined through considering the sound absorption behavior at different frequencies. In this article, it has been tried to provide general and partial specific information about sound absorption properties of textiles. It is noteworthy to mention that some research results are in conflict with each other.

http://www.itast.ir/article_143607_fc530a0a84a97bb764b5fdfc34c57194.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 1 2022 02 01 Providing a New Method for Evaluating the Nip Stability in Intermingled Yarn 23 30 143608 10.48302/jtp.2022.143608 EN Siamak Shirzadeh Ajirloo Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. 0000-0003-4743-0027 Saeed Shaikhzadeh Najar Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. Mehdi Varsei Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. Abosaeed Rashidi Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. Journal Article 2022 01 22 The aim of this study is to provide a method to evaluate the intermingled nip stability. For this purpose, polypropylene (fully drawn yarn) FDY with three types of intermingling Heberlein jet inserts (P412, P212, and S16) and three air pressure values of 2, 3, and 4 bar was subjected to the texturing process. In measuring the nip stability in the previous methods, i.e. using the nip number, it was observed that in some long nips with special structures, a nip with certain length under the stretching process may become several nips with a less total entanglement length. This can cause an error in evaluating the nip stability. Therefore, in order to evaluate the nip stability, it is suggested to use the nip length in the 360° study around the yarn axis to evaluate the effect of the change in the length of the intermingled areas due to stretching. Using the method presented in this research and after performing experiments, the maximum and minimum nip stability with considering the nip length were 97.3% (for P412 jet insert and 4 bar air pressure) and 48.55% (for S16 jet insert and 2 bar air pressure), respectively. However, the nip stability in the same test conditions based on nip density was 74.47 and 52.94%, respectively.

http://www.itast.ir/article_143608_18f4544ce775517f5bbabbf9993d4fd5.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 1 2022 02 01 Applying Fuzzy Logic Model for Static Puncture Evaluation of Nonwoven Needle-Punched Polyester Fabrics 31 39 143916 10.48302/jtp.2022.143916 EN Nadia Tehrani-Dehkordi Department of Textile Engineering, Yazd University, P.O. Box 89168- 69511, Yazd, Iran. 0000-0002-1848-8548 Mohsen Hadizadeh Department of Textile Engineering, Yazd University, P.O. Box 89168- 69511, Yazd, Iran. Hasan Mashroteh Department of Textile Engineering, Yazd University, P.O. Box 89168- 69511, Yazd, Iran. 0000-0003-0585-7938 Milad Sadeghi-Sadeghabad Department of Textile Engineering, Yazd University, P.O. Box 89168- 69511, Yazd, Iran. Journal Article 2022 01 28 Nonwoven needle-punched fabrics are the most common textile structures used as geotextiles. In most applications, geotextiles are subjected to compressive forces. These forces cause the layers to deform and eventually create puncture. The present study develops an intelligent model for the evaluation of static puncture resistance and real elongation of nonwoven needle-punched polyester fabrics using fuzzy logic method. The fuzzy logic expert system, contrary to many other mathematical methods, can considerably forecast the behavior of nonlinear complex phenomena. Parameters of needle penetration depth, needle punch density, and fabric areal weight were considered as input variables of the designed model. The experimental results were conducted by a universal strength tester based on the well-known static puncture (CBR) test method. The fuzzy model showed that puncture resistance increases with the enhancement of fabric areal weight, but excessive increase of the needling parameters causes the puncture resistance to decrease. Furthermore, the results of the model demonstrated that the fabric puncture real elongation decreases, while the input variables increase. It was also observed that the real and predicted values of puncture resistance and puncture real elongation of the fabrics were in good agreement with very low absolute error.

http://www.itast.ir/article_143916_d108d2ebd66f481584c1798bd0f561be.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 1 2022 02 01 A Review on Centrifugal and Electro-Centrifugal Spinning as New Methods of Nanofibers Fabrication 41 55 144517 10.48302/jtp.2022.144517 EN Adeleh Gholipour-Kanani Department of Textile Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 1477893855, Tehran, Iran. 0000-0002-6257-2237 Pedram Daneshi Department of Textile Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 1477893855, Tehran, Iran. Journal Article 2022 02 08 In the recent years, by developing the methods of nanofibers formation, electro-centrifugal spinning has been introduced as a new method of nanofibers fabrication. This nanofabrication technique is a combination of known technique called electrospinning and a new coming method called centrifugal spinning. This paper is a comparative study among conventional electrospinning, centrifugal spinning and the basis of electro-centrifugal spinning methods. For instance, although, the distance of nozzle to collector is a critical operating parameter to determining nanofibers diameter in electrospinning method, it only shows an effect on the morphology and has no significant effect on the fiber diameter in centrifugal spinning. Surface tension and viscosity of the solutions are the spinning-ability determinatives in these three methods which are affected by the type of polymers and solvents and also the concentration of the solution, and need to be overcome through electrical or centrifugal forces or both. The effective parameters on the process and the fiber morphology are investigated for each of the three methods

http://www.itast.ir/article_144517_086c14f8feb8dd77acf6ed248821d4e6.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 1 2022 02 01 Influence of Cover Factor on the Physical Properties of Woven Fabrics 57 63 145558 10.48302/jtp.2022.145558 EN Shariful Islam Department of Textile Engineering, Faculty of Science and Engineering, City University, Dhaka, Bangladesh. 0000-0001-6215-9066 Shilpi Akter Department of Fabric Engineering, Faculty of Textile Engineering, Bangladesh University of Textiles, Tegjaon, Dhaka, 1208. Bangladesh Shaharia Ahmed College of Textiles, Zhongyuan University of Technology, Zhengzhou, Henan, China. 0000-0003-1325-116X Journal Article 2022 02 27 The aim of this paper is to explore the influence of cover factor on the physical properties of woven fabrics. 100% cotton woven fabrics of different thread count and width were used in this research for investigation. Nine types of fabric with different weaves like plain (1/1), twill (3/1) and 5 ends satin (4/1) were used while conducting the tests. The experiments were carried out in agreement with the test method provided by ASTM and AATCC as mentioend inside the paper. The cover factors of the samples were measured with an appropriate equation using weave factor values. It was seen from the research that, plain weave fabrics showed the maximum cover factor and weight (g/m2) values compared to twill and satin fabrics. It was because, plain weave contains maximum interlacement points compared to other weave structures. The fabrics of plain weave showed the maximum strength values, maximum air permeability values, and least shrinkage values. Fabrics with plain weave contain more interlacement, thus showed the maximum air permeability values. This research is practice-based and opens up possible ways for further study by technologists in this field of fabric cover factor and its influence on the physical properties of fabrics.

http://www.itast.ir/article_145558_caf692e7008d1ba8414938769ef0f14d.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 1 2022 02 01 Fabrication and Characterization of Electrospun Wool Nanoparticles/Nylon 6 Composite Nanofiber Yarn 65 78 145560 10.48302/jtp.2022.145560 EN Arezoo Rajabimehr Department of Textile Engineering, Isfahan University of Technology, Isfahan, Iran. Ali Akbar Gharehaghaji Textile Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. 0000-0002-3819-5048 Ali Zadhoush Department of Textile Engineering, Isfahan University of Technology, Isfahan, Iran. Farideh Hajiani Fabric Design Department, Faculty of Applied Arts, University of Art, Tehran, Iran. Journal Article 2022 02 27 The present study attempts to combine the properties of natural and synthetic fibers by using nanotechnology. Considering the potential of nylon nanofiber structures in some applications such as controlled drug release, moisture microsensors and antibacterial filters, the moisture absorption of the nanofibers could be improved via using biocompatible natural fibers such as wool. In this investigation, it was achieved to produce yarns of composite nylon 6 nanofibers, incorporating wool nanoparticles (WNPs), via electrospinning. WNPs were added to the electrospinning solution of nylon 6 in various concentrations. Scanning electron microscopy was employed to characterize the morphology of composite nanofibers. The existence of WNPs in the nanofibers was confirmed by transmission electron microscopy. Fourier transform infrared spectroscopy (FTIR) spectra showed that nanofibrous composite formation did not influence the chemical bonds of both the wool nanoparticles and nylon 6, and no new steady bonds were formed. It was found that an increase in the WNPs concentration increased the diameter of composite nanofibers from 152±16 nm (pure nanofibers) to 266±51 nm (7 wt% nanoparticles). The assessment of moisture regain of composite nanofiber yarns showed that the moisture absorption of nylon 6 nanofibers improved by introducing the WNPs as hydrophilic components. The moisture regain of the composite nanofibers yarn containing 7 wt% nanoparticles was found to be higher than that of the pure nanofibers yarn by about 117.1%. On the other hand, tensile strength and elongation-at-break of composite nanofiber yarns initially decreased and then increased with the increase in WNPs concentration.

http://www.itast.ir/article_145560_4dd96d05fb53b9afd7433d688981c5bd.pdf